Title of Invention	STAPLE REFILL
Abstract	A staple refill which can be stored in a refill storing section in such a manner that the leading one of the sheet-like joined staples wobad In roll form n on the upper side and which is adapted to lessent the load on a send-out means for stnding out the leading one of the sheet-like joined staples in a stapler main body. The staple refill (1) is removably attached to a cartridge (51) installed in a stapler main body (50). A refill (2) comprises a storing; section (40) for staring sheet-like joined staples (S) wound in roll form, a discharge port (46) for discharging the sheet-like joined staples (S), and a lead-out passage (43) for leading out die leading part (S1) of the sheet-lite joined staples (S) into the discharge port (46). The lead-out passage (45) is upwardly bent from the discharge port (46) toward the interior of the storing section (40), so that the leading part (S1) positioned on the upper rids of the sheet-like Joined staples (S) is land out to the discherge port (46). The lead-out passage (45) is provided with a retrograkls motion preventivs member (31) which prevents.

Title of Invention

STAPLE REFILL

Abstract

A staple refill which can be stored in a refill storing section in such a manner that the leading one of the sheet-like joined staples wobad In roll form n on the upper side and which is adapted to lessent the load on a send-out means for stnding out the leading one of the sheet-like joined staples in a stapler main body. The staple refill (1) is removably attached to a cartridge (51) installed in a stapler main body (50). A refill (2) comprises a storing; section (40) for staring sheet-like joined staples (S) wound in roll form, a discharge port (46) for discharging the sheet-like joined staples (S), and a lead-out passage (43) for leading out die leading part (S1) of the sheet-lite joined staples (S) into the discharge port (46). The lead-out passage (45) is upwardly bent from the discharge port (46) toward the interior of the storing section (40), so that the leading part (S1) positioned on the upper rids of the sheet-like Joined staples (S) is land out to the discherge port (46). The lead-out passage (45) is provided with a retrograkls motion preventivs member (31) which prevents.

Full Text	STAPLE REFILL FIELD OF THE INVENTION The present invention relates to a staple refill in which a sheet-like connected staple wound in a roll shape is stored. BACKGROUND OF THE INVENTION For example, as disclosed in Japanese patent Application Laid-Open No. H9-136271 (Patent Reference 1), the conventional staple refill in which the sheet-like connected staple wound in a roll shape is stored has a refill which is detachably attached to a stapler main body or a cartridge provided in the stapler main body. The refill includes a storage portion in which the sheet-like connected staple is stored, a discharge port which discharges the sheet-like connected staple stored in the storage portion, and a delivery passage which delivers a leading end portion of the sheet-like connected staple stored in the storage portion to the discharge port. The delivery passage is formed in a substantially linear shape, and is formed along a lower surface in the storage portion. A metal backward movement preventing member which is formed independently of the refill is attached to an upper portion of the delivery passage. In the sheet-like connected staple, many linear staples are arrange in a crosswise direction while being in contact with one another, and a bonding agent is applied to an upper surface to couple the staples in a band shape. Further, the sheet-like connected staple are caused to adhere in the center of the upper surfaces in the lengthwise direction by an adhesive tape, which prevents the linear staple from being separated. The sheet-like connected staple is wound in a roll shape while the upper surface faces the outside, and the sheet-like connected staple is stored in the staple refill. In the conventional staple refill in which the sheet- like connected staple wound in a roll shape is stored, the sheet-like connected staple is stored in the storage portion of the refill such that a leading end portion of the sheet-like connected staple is located in a lower portion of the storage portion, and the leading end portion of the sheet-like connected staple is linearly stretched along the lower surface of the storage portion and the delivery passage. When the leading end portion of the sheet-like connected staple is delivered from the discharge port by feeding means such as a feeding pawl or a feeding roller provided in the stapler main body or the like, the whole sheet-like connected staple is placed on a drawn- forth portion which is linearly drawn. Therefore, there is a problem that a weight of the sheet-like connected staple is applied to the feeding means as a load. In drawing forth the sheet-like connected staple, because the whole sheet-like connected staple is moved forward, the sheet- like connected staple abuts on an' inner surface of the storage portion, and the larger-than designed load is applied to the feeding means due to friction action, which results in the problem that it is difficult for the feeding means to feed the leading end portion of the sheet-like connected staple. In the conventional staple refill, the backward movement preventing member slides on the drawn-forth portion which is linearly drawn. When the sheet-like connected staple is drawn forth on the discharge port side, the backward movement preventing member is bent in the discharge port, and the drawing-forth of the sheet-like connected staple is not obstructed. On the contrary, when the sheet-like connected staple is drawn back toward the storage portion side, the backward movement preventing member is latched in a connecting recess portion between the staples of the sheet-like connected staple, which prevents the drawing-back of the sheet-like connected staple. Thus, the backward movement preventing member always slides on the sheet-like connected staple. However, when contact pressure is excessively strong in the slide, the load applied onto the feeding means for feeding the sheet-like connected staple is increased. On the other hand, when the contact; pressure is excessively weak in the slide, drawing-back resistance of the sheet-like connected staple is decreased. Therefore, there is the problem that the backward movement; preventing member is difficult to adjust. The feeding means is pressed to latch the lower surface of the sheet-like connected staple, and the sheet- like connected staple is fed forward. As described above, the bonding agent is applied to the upper surface and the adhesive tape adheres to the center of the upper surface toward the lengthwise direction. In the conventional staple refill, the backward movement preventing member slides on the upper surface of the sheet-like connected staple to which the bonding agent is applied. Therefore, the backward movement preventing member does not behave well in some cases because the backward movement preventing member slips. Further, the backward movement preventing members slide on both sides of the sheet-like connected staple across the adhesive tape, and there is a possibility that the sheet-like connected staple is bent when one of the backward movement preventing members does not behave well. There is also the problem that both the backward movement preventing members are difficult to adjust so as to behave well in the same manner. Further, because the backward movement preventing member is produced independently of the refill, the a labor hour is required to attach the backward movement preventing member to the refill, and the adjustment is required in the attachment of the backward movement preventing member as described above. Therefore, there is the problem that the backward movement preventing member cannot easily be installed in the refill. In the conventional staple refill, because the backward movement preventing member made of a metal material is installed, it is necessary to separate the backward movement preventing member into each material in disposal, which results in the problem that the disposal of the backward movement preventing member becomes troublesome. In the conventional staple refill, when the sheet- like connected staple wound in a roll shape is stored in the storage portion of the refill, the whole outer surface of the sheet-like connected staple is stored while being in contact with a bottom surface of the storage portion. When the sheet-like connected staple is drawn toward the discharge port side, because the whole outer surface of the sheet-like connected staple is rotated while sliding on the bottom surface of the storage portion, the frictional resistance is increased, which results in the problem that the load applied onto the feeding means for feeding the sheet-like connected staple becomes large. In the conventional staple refill, the sheet-like connected staple wound in a roll shape is stored in the storage portion of the refill, and the sheet-like connected staple is oscillated in the storage portion during transportation, which results in the possibility that the sheet-like connected staple wound in a roll shape is released. Further, in the opaque refill, the inside of the refill cannot be seen, which results in the problem that a state of the sheet-like connected staple and a remaining amount of sheet-like connected staple cannot be confirmed. In view of the foregoing, a first object of the invention is to provide a staple refill, in which the sheet-like connected staple wound in a roll shape can be stored in the storage portion of the staple refill while the leading end portion of the sheet-like connected staple is located in the upper portion of the storage portion and the load applied onto the feeding means of the stapler main body can be decreased because the sheet-like connected staple is not placed on the drawn-forth portion which is drawn and fed. A second object of the invention is to provide a staple refill, in which the delivery passage is curved upward from the discharge port toward the inside of the storage portion, the backward movement preventing member is formed in the delivery passage, the backward movement preventing member is inclined downward to weaken the latching force when the sheet-like connected staple is fed, and the backward movement preventing member is inclined upward to strengthen the latching force when the sheet-like connected staple is drawn back, and thereby the adjustment of the backward movement preventing member is not required. A third object of the invention is to provide a staple refill, in which the backward movement preventing member slides not on the upper surface of the sheet-like connected staple where the bonding agent is applied and the adhesive tape adheres, but on the lower surface of the sheet-like connected staple with which the feeding means of the stapler main body is made in contact, the sheet-like connected staple can securely be latched, the backward movement preventing member car. slide in the center of the sheet-like connected staple, and thereby the possibility that the sheet-like connected staple is fed while being bent is eliminated. A Eourth object of the invention is to provide a staple refill, in which because the backward movement preventing member is integrated with the staple refill, the labor hour for attaching the backward movement preventing member to the staple refill is eliminated, and the staple refill can easily be assembled. A fifth object of the invention is to provide a staple refill, in which a projection strip slidinq on the outer surface of the sheet-like connected staple wound in a roll shape is provided in the storage portion of the staple refill, a contact area with the outer surface of the sheet- like connected staple is lessened to decrease the frictional resistance, and thereby the rotation of the sheet-like connected staple can be smoothed. A sixth object of the invention is to provide a staple refill in which there is formed an opening that can be utilized in order to press the sheet-like connected staple stored in the storage portion of the staple refill so as not to move and that allows for confirmation of the inside the storage portion. SUMMARY OF THE INVENTION In order to solve achieve the object, there is provided a staple refill according to a first aspect of the invention which is detachably attached to a stapler main body or a cartridge provided in the stapler main body, the staple refill including a storage portion in which a sheet- like connected staple wound in a roll shape is stored, a discharge port which discharges the sheet-like connected staple stored in the storage portion, and a delivery passage which delivers a leading end portion of the sheet- like connected staple stored in the storage portion to the discharge port, wherein the delivery passage is curved upward from the discharge port toward an inside of the storage portion; the delivery passage delivers the leading end portion to the discharge port, the leading end portion being located in an upper side of the sheet-like connected staple; and a backward movement preventing member is provided in the delivery passage, the backward movement preventing member preventing movement of the sheet-like connected staple toward the storage portion side. In order to solve achieve .the object, there is provided a staple refill according to a second aspect of the invention wherein the backward movement preventing member is integrated with the staple refill. In order to solve achieve the object, there is provided a staple refill according to a third and fourth aspect of the invention wherein the backward movement preventing member is formed such that a leading edge slides on the lower surface side of the sheet-like connected staple to latch a connecting recess portion between staples. In order to solve achieve the object, there is provided a staple refill according to a fifth aspect of the invention wherein the delivery passage includes a first guide passage and a second guide passage, the first guide passage communicated with the discharge port and being formed in a substantially linear shape, the second guide passage communicated with the storage portion and being curved upward; and the; backward movement preventing member is provided in the second guide passage. In order to solve achieve the object, there is provided a staple refill according to a sixth aspect of the invention wherein the delivery passage includes an upper guide surface and a lower guide surface, the upper guide surface guiding an upper surface of the sheet-like connected staple, the lower guide surface guiding a lower surface of the sheet-like connected staple; the upper guide surface of the second guide passage is coupled to an inner surface of the storage portion; and the lower guide surface of the second guide passage is formed by a curved surface on the discharge port side, the curved surface projected toward an inside of the storage portion and being included in a guide projection portion. In order to solve achieve the object, there is provided a staple refill according to a seventh aspect of the invention wherein the backward movement preventing member is formed so as to be projected from a surface on the discharge port side of the guide projection portion. In order to solve achieve the object, there is provided a staple refill according to a eighth aspect of the invention □ wherein the surface on the discharge port side of the guide projection, portion is formed in a curved shape so as to guide the sheet-like connected staple stored in the storage portion. In order to solve achieve the object, there is provided a staple refill according to a ninth aspect of the invention which is detachably attached to a stapler main body or a cartridge provided in the stapler main body, the staple refill including a storage portion in which a sheet- like connected staple wound, in a roll shape is stored, a discharge port which discharges the sheet-like connected staple stored in the storage portion, and a delivery passage which delivers a leading end portion of the sheet- like connected staple stored in the storage portion to the discharge port, wherein a backward movement preventing member is provided in the delivery passage, the backward movement preventing member preventing movement of the sheet-like connected staple toward the storage portion side; and a projection strip is provided in an inner surface of the storage portion, the projection strip sliding on an outer surface of the sheet-like connected staple wound in a roll shape to smooth rotation of the sheet-like connected staple. In order to achieve the object, a staple refill, according to a tenth aspect of the invention, is detachably attached to a stapler main body or a cartridge provided in the stapler main body, the staple refill including a storage portion in which a sheet-like connected staple wound in a roll shape is stored, a discharge port which discharges the sheet-lake connected staple stored in the storage portion, and a delivery passage which delivers a leading end portion of the sheet-like connected staple stored in the storage portion to the discharge port, wherein a backward movement preventing member is provided in the delivery passage, the backward movement preventing member preventing movement of the sheet-like connected staple toward the storage portion side ; and an opening communicated with the storage portion is formed in the staple refill. BRIEF DESCRIPTION OF THE: ACCOMPANYING DRAWINGS FIG. 1 is an overall perspective view showing an embodiment of a staple refill according to the invention; Fig. 2 is an exploced perspective view of Fig. 1 ; Fig. 3 is a sectioral perspective view of Fig. 1; Fig. 4 is a sectioral side view of Fig. 1 ; Figs. 5a, 5b, 5c, 5d and 5e are respectively, top, front, side and bottom and rear views of the staple refill of Fig. 1 ; Figs. 6(a), 6(b) and 6(c) are sectional views showing a main part of Fig. 1; Fig. 7 is a perspective view showing a state in which the staple refill is attached to a cartridge of a stapler main body; Fig. 8 is an explanatory view showing an operation of the staple refill according to the invention; Fig. 9 is an overall perspective view showing another embodiment of a staple refill according to the invention; and Fig. 10 is an exploded perspective view of Fig. 9. DEATILED DESCRIPION OF THE PREFERRED EMBODIMENT Embodiments of a staple refill according to the invention will be described below with reference to Figs. 1 to 10. Fig. 1 is an overall perspective view showing an embodiment of a staple refill according to the invention. Fig. 2 is an exploded perspective view of Fig. 1. Fig. 3 is a sectional perspective view of Fig. 1. Fig. 4 is a sectional side view of Fig. 2. Fig. 5 is a six-side view of the staple refill of Fig. 1, Fig. 5A is a top view when the staple refill is viewed from above, Fig. 5B is a front view when the staple refill is viewed from a front side, Fig. 5C is a side view when the staple refill is viewed from a side face, Fig. 5D is a bottom view when the staple refill is viewed from below, and Fig. 5E is a rear view when the staple refill is viewed from a rear side. Fig. 6 is a sectional view showing a main part of Fig. 1. Fig. 7 is a perspective view showing a state in which the staple refill is attached to a cartridge of a stapler main body. Fig. 8 is an explanatory view showing an operation of the staple refill according to the invention. Fig. 9 is an overall perspective view showing another embodiment of a staple refill according to the invention. Fig. 10 is an exploded perspective view of Fig. 9. As shown in Fig, 7, a staple refill 1 is detachably attached to a stapler main body 50 or a cartridge 51 provided in the stapler main body 50. As shown in Figs. 3 and 4, the staple refill 1 includes a storage portion 40, a discharge port 46, and a delivery passage 45. A sheet-like connected staple S wound in a roll shape is stored in the storage portion 40. The discharge port 4 6 discharges the sheet-like connected staple S stored in the storage portion 40. The delivery passage 45 delivers a leading end portion S1 of the sheet-like connected staple S stored in the storage portion 40 to a discharge port 46. The delivery passage 45 is curved upward from the discharge port 4 6 toward the inside of the storage portion 40 so as to deliver the leading end portion S1, located on the upper side of the sheet-like connected staple S, to the discharge port 46. A backward movement preventing member 31 which prevents the sheet-like connected staple S from moving toward the side of the storage portion 40 is provided in the delivery passage 45. The backward movement preventing member 31 is integrated with the staple refill The backward movement preventing member 31 is formed such that a leading edge 31a slides on the side of a lower surface S3 of the sheet-like connected staple S to latch a connecting recess portion between the staples. The delivery passage 45 includes a first guide passage 43 and a second guide passage 42. The first guide passage 43 substantially formed in a linear shape is communicated with the discharge port 46. The second guide passage 42 curved upward is communicated with the storage portion 40. The backward movement preventing member 31 is provided in the second guide passage 4 2 while being exposed. The delivery passage 45 includes an upper guide surface 47 and a lower guide surface 48. The upper guide surface 47 guides an upper surface S2 of the sheet-like connected staple S, and the lower guide surface 48 guides the lower surface S3 of the sheet-like connected staple S. An upper guide surface 13a of the second guide passage 42 is communicated with an inner surface 41 of the storage portion 40. A lower guide surface of the second guide passage 42 is formed by a curved surface 26 on the side of the discharge port 46. The curved surface 26 is included in a guide projection portion 25 projected in the storage portion 40. The backward movement preventing member 31 is formed so as to be projected from the surface 26 of the guide projection portion 25 on the side of the discharge port 46. A surface 27 of the guide projection portion 25 on the side of the storage portion 40 is curved so as to guide the sheet-like connected staple S stored in the storage portion 40. Projection strips 20 and 35 are provided in an inner surface of the storage portion 40 of the staple refill 1. The projection strips 20 and 35 slides on the outer surface of the sheet-like connected staple S wound in a roll shape, and smoothly rotates the sheet-like connected staple S. An opening 8 communicated with the storage portion 4 0 is formed in the staple refill 1. The staple refill will be described in detail. As shown in Figs. 1 and 2, a refill 2 of the staple refill 1 includes an upper case 3 and a lower case 5 which is detachably fixed to the upper case 3. The upper case 3 is integrally formed by a synthetic resin, and includes an upper wall 6, a left wall 7 provided in the left end of the upper wall 6, and a right wall 9 provided in the right end of the upper wall 6. The upper wall 6 includes an upper semi-cylindrical wall 11, a vertical wall 12 whose upper end is coupled to a front end of the upper semi-cylindrical wall 11, a curved wall 13 whose one end is coupled to a lower end of the vertical wall 12, and a horizontal wall 15 whose rear end is coupled to the other end of the curved wall 13. The left wall 7 and the right wall 9 include circular walls 7a and 9a and lower walls 7b and 9b respectively. The lower walls 7b and 9b, which extend substantially in a horizontal direction, are coupled to lower ends of the circular walls 7a and 9a respectively. The lower walls 7b and 9b are projected downward from the horizontal wall 15. Latch holes 14 and 14 are formed in the lower walls 7b and 9b. A grip arm 18 extending backward is formed in the upper portion of the upper semi-cylindrical wall 11. A rib 19 reinforcing the curved wall 13 is formed in the upper surface of the curved wall 13. The opening 8 is formed in the rear portion of the upper semi-cylindrical wall 11. Further, the guide projection strip 20 guiding the sheet- like connected staple S is provided in the inner surface of the upper wall 6 of the upper case 3, i.e., in the inner surfaces of the upper semi-cylindrical wall 11, the vertical wall 12, the curved wall 13, and the horizontal wall 15. As shown in Figs. 3 a.nd 4, similarly to the upper case 3, the lower case 5 is integrally formed by a synthetic resin, and includes a lower wall 21. The lower wall 21 includes an arc wall 22 and a linear wall 23. The arc wall 22 is formed in a quarter arc shape, and the rear end of the linear wall 23 is coupled to the front end of the arc wall 22. The mound-shaped guide projection 25 is formed in the linear wall 23. One surface 26 (on the side of the discharge port 4 6) of the guide projection (guide projection portion) 25 is curved such that a substantially constant gap is formed with a lower surface 13a of the curved wall 13 of the upper case 3. The other surface 27 (on the side of the storage portion 40) of the guide projection 25 is curved such that an arc is formed like the arc wall 22. A top portion 29 of the guide projection 25 is formed in a semi-circular shape. A notch portion 30 is formed in a substantially intermediate portion of the guide projection 25. The pawl- shaped backward movement preventing member 31 is integrally provided in the linear wall 23. The backward movement preventing member 31 is located in the notch portion 30, and is projected from the curved one surface 26. In the linear wall 23, a substantially U-shaped notch recessed portion 32 is formed in the front portion, and the rear portion extends beyond the arc wall 22. The guide band (projection strip) 35 guiding the sheet-like connected staple S is projected in the inner surface of the lower wall 21 of the lower case 5, i.e., in the inner surfaces of the arc wall 22, the guide projection 25, and the linear wall 23. Latch pawls 3 6 and 36 are formed on both sides of the lower wall 21, and the latch pawls 36 and 36 are detachably latched in latch holes 14 and 14 of the upper case 3. In the staple refill 1, when the lower case 5 is fitted between the lower wall 7b of the left wall 7 and the lower wall 9b of the right wall 9 of the upper case 3, the latch pawls 36 and 36 of the lower case 5 is latched in the latch holes 14 and 14 of the upper case 3 to assemble the refill 2. In the assembly, as shown in Fig. 3, the sheet- like connected staple S is placed in the lower case 5, when the sheet-like connected staple S is stored in the upper case 3 such that the leading end portion S1 of the sheet- like connected staple S wound counterclockwise is located in the upper portion of the upper case 3. In the refill 2, the cylindrical storage chamber 4 0 is formed by the upper semi-cylindrical wall 11 and vertical wall 12 of the upper wall 6, the arc wall 22 and the other surface (on the side of the storage portion 40) 27 of the guide projection (guide projection portion) 25 of the lower case 5, and the left wall 7 and right wall 9. The sheet-like connected staple S is positioned on the lowest linear wall 23 by the arc wall 22 of the lower case 5 and the other surface 27 of the guide projection 25. In the refill 2, the second guide passage 42 curved smoothly upward is formed by the lower surface 13a of the curved wall 13 of the upper case 3, one surface (on the side of the discharge port 46) 26 of the guide projection 25 of the lower case 5, the left wall 7 and right wall 9. The second guide passage 42 is upwardly curved toward the side of the storage portion 40, and is communicated with the storage portion 40. In the refill 2, the substantially linear first guide passage 43 is formed by a lower surface 15a of the horizontal wall 15 of the upper case 3, an upper surface 23a of the linear wall 23 of the lower case 5, the left wall 7 and right wall 9. That is, the delivery passage 45 is formed by the first guide passage 43 and the second guide passage 42. The discharge port 46 is formed at the front end of the delivery passage 45, and the sheet- like connected staple S is sequentially discharged from the leading end portion S1. The delivery passage 45 includes the upper guide surface 47 guiding the upper surface S2 of the sheet-like connected staple S and the lower guide surface 48 guiding the lower surface S3 of the sheet-like connected staple S. The upper guide surface 47 is formed by the lower surface 15a of the horizontal wall 15 of the upper case 3 and the lower surface 13a of the curved wall 13 of the upper case 3. The lower guide surface 48 is formed by the upper surface 23a of the linear wall 23 of the lower case 5 and one surface (on the side of the discharge port 46) 26 of the guide projection 2 5. On the upper guide surface 47 of the delivery passage 45, the two guide projection strips 20 are provided along a moving direction of the sheet-like connected staple S. The guide projection strip 20 is a strip-shaped projection portion which is slightly projected from the upper guide surface 47 toward the side of the sheet-like connected staple S. The guide projection strip 20 decreases a contact area between the upper guide surface 47 and the sheet-like connected staple S to decrease slide resistance in moving the sheet-like connected staple S, and thereby the sheet-like connected staple S is smoothly drawn forth. The notch recessed portion 32 is provided at a position facing the horizontal wall 15 of the upper guide surface 47 of the lower guide surface 48. The notch recessed portion 32 is a portion which brings a feeding pawl (feeding roller) of the stapler main body 50 into contact with the lower surface S3 of the sheet-like connected staple S. The sheet-like connected staple S is drawn from the storage portion 40 by the notch recessed portion 32, and is delivered to the discharge port 46. The backward movement preventing member 31 is projected toward the inside of the second guide passage 42, and a leading edge 31a extends to a neighborhood of the lower surface 13a of the curved wall 13. The backward movement preventing member 31 can be bent due to elasticity of the synthetic resin material. The leading edge 31a of the backward movement preventing member 31 slides on the lower surface S3 of the sheet-like connected staple S to latch the connecting recess portion between the staples of the sheet-like connected staple S, which prevents the backward movement of the sheet-like connected staple S towards the side of the storage portion 40. The shape of the backward movement preventing member 31 is not particularly limited. For example, the backward movement preventing member 31 can obliquely be provided as shown in Fig. 6A, the backward movement preventing member 31 can be provided in a substantially L-shape as shown in Fig. 6B, and the backward movement preventing member 31 can be provided in a substantially n--shape as shown in Fig. 6C. As described above, the backwaxd movement preventing member 31 is formed in a pawl shape, and the leading edge 31a strongly presses the sheet-like connected staple S (particularly drawn-forth portion S5) against the side of the lower surface 12a of the curved wall 13 during transportation. Therefore, there is no possibility that the sheet-like connected staple S is drawn from the staple refill 1 due to the excessive shock or the like. In the case where the staple refill 1 is set, the portion projected from the lower wall 21 is returned into the refill, which rotates the backward movement preventing member 31 counterclockwise. The rotation of the sheet-like connected staple S slightly retreats the leading edge 31a of the backward movement preventing member 31 from the lower surface 13a of the curved wall 13 to decrease the pressing force to the sheet-like connected staple S. Therefore, moving resistance of the sheet-like connected staple S toward the feeding direction is decreased to perform the staple feeding more smoothly. A leading tape (not shown) provided in the leading end portion S1 of the sheet-like connected staple S is drawn from the discharge port 46. When the leading tape is pulled, the sheet-like connected staple S provided in the storage chamber 40 of the staple refill 1 is rotated and the leading edge of the leading tape is located at the discharge port 46. The staple refill 1 is attached to the cartridge 51 which is detachably mounted to the stapler main body 50, and the cartridge 51 is mounted to the stapler main body 50. When . the stapler main body 50 is driven, the leading end portion S1 of the sheet-like connected staple S is intermittently drawn toward the driver side by feeding means (for example, feeding pawl and feeding roller). A roll winding portion S4 of the sheet- like connected staple S is not placed on a drawn-forth portion S5, which decreases a load on the feeding means. The whole outer surfaces of the roll winding portion S4 of the sheet-like connected staple S do not come into contact with the inner surface of the storage chamber (storage portion) 40, but a part of the roll winding portion S4 comes into contact with the guide projection strip 20 and/or the guide band (projection strip) 35, so that the contact area is small. Therefore, frictional resistance is decreased, which further decreases the load on the feeding means. When the leading end portion S1 of the sheet-like connected staple S is drawn by the feeding means of the stapler main body 50, as shown, in Fig. 8A, the drawn-forth portion S5 is brought into close contact with the upper guide surface (the lower surface 13a of the curved wall 13) of the delivery passage 45, and the leading edge 31a of the backward movement preventing member 31 slides slightly on the drawn-forth portion S5 of the sheet-like connected staple S. Therefore, the sheet-like connected staple S can securely be delivered while little load is applied onto the feeding means. When the leading end portion S1 of the sheet-like connected staple S is returned by a weight of the roll winding portion S4 in the storage portion 40, as shown in Fig. 8B, the drawn-forth portion S5 comes into close contact with one surface 26 of the guide projection 25, and the leading edge 31a,, projected from one surface 26, of the backward movement preventing member 31 securely latches the sheet-like connected staple S. In the staple refill 1, the roll winding portion S4 is decreased as the sheet-like connected staple S is drawn. As shown in Fig. 8C, the sheet-like connected staple S is delivered to the delivery passage 4 5 after the drawn-forth portion S5 of the sheet-like connected staple S is lifted by the top portion 29 of the guide projection 25, so that the staple refill 1 also functions as described above. The top portion 29 of the guide projection 25 is formed in a semi-circular shape, so that the guide projection 25 can smoothly guide the sheet-like connected staple S. Thus, the staple refill 1 can store the sheet-like connected staple S wound in a roll shape in the storage portion 40 of the refill 2 while the leading end portion S1 is placed in the upper portion of the storage portion 40, and the roll winding portion S4 is not placed on the drawn- forth portion S5 when the sheet-like connected staple S is delivered from the discharge port 46. Therefore, the load applied onto the feeding means is decreased. In the conventional staple refill, a backward movement preventing member slides on a linearly extended portion of the sheet-like connected staple, and it is difficult to adjust contact pressure of the backward movement preventing memoer in the slide. On the contrary, in the staple refill 1, s1nce the curved delivery passage 45 is utilized as described above, the drawing-forth of the sheet-like connected staple differs from the drawing-back of the sheet-like connected staple in the latching force of the backward movement preventing member 31, and the latching force of the backward movement preventing member 31 is increased in drawing back the sheet-like connected staple rather than in drawing forth the sheet-like connected staple. Therefore, it is not necessary to adjust the contact pressure of the backward movement preventing member 31. In the staple refill 1, s1milarly to the feeding means of the stapler main body 50, the backward movement preventing member 31 is pressed to latch the lower surface S3 of the sheet-like connected staple S, where a bonding agent is not applied and a bonding tape does not adhere in a lengthwise direction. Therefore, the backward movement of the sheet-like connected staple S can securely be prevented, and the backward movement preventing member 31 can be arranged substantially in the center of the lower surface S3, so that the sheet-like connected staple S can be latched in a well-balanced manner. In the staple refill 1, s1nce the backward movement preventing member 31 is integrally formed, it is not necessary to install the backward movement preventing member made of a metal material in the refill unlike the conventional staple refill. Therefore, the assembly of the staple refill 1 can eas1ly be performed, and weight reduction and cost reduction of the refill 2 can be achieved. Further, disposal of the staple refill 1 is easy to perform because it is not necessary to separate the staple refill 1 into each material. In the refill 2, s1nce the opening 8 is formed in the rear portion of the upper semi-cylindrical wall 11 as described above, the sheet-like connected staple S stored in the storage chamber 10 can be fixed so as not to move during the transportation by mounting a press1ng member such as a cushion material from the opening 8 in packaging the staple refill 1, which allows the leading edge pos1tion of the sheet-like connected staple S not to be shifted. In the usage of the staple refill 1, a state such as a remaining amount of sheet-like connected staple S can also be confirmed by utilizing the opening 8. In the staple refill 1, the backward movement preventing member 31 is integrated with the lower wall 21 of the lower case 5. Alternatively, as shown in Figs. 9 and 10, substantially L-shaped engaging projections 53 and 53 are formed on both s1des of a plate-shaped lower wall 52 of a lower case 57, and both ends of an insertion plate 56 including backward movement preventing members 55, which are formed substantially in an inverse U-shape and separately formed by a synthetic res1n, are engaged to the engaging projections 53 and 53, and the backward movement preventing member 55 may be provided in the lower wall 52 of the lower case 57. The backward movement preventing members 55, which are formed substantially in an inverse U- shape, are projected from long holes 60 formed in one curved surface 59 of a substantially mound-shaped guide projection 58, and the backward movement preventing members 55 press the sheet-like connected staple S. [Effects of the Invention] In the staple refill according to the invention, the leading end portion of the sheet-like connected staple wound in a roll shape can be stored in the storage portion of the refill while the leading end portion is placed in the upper portion of the storage portion, and the sheet- like connected staple is not placed on the drawn-forth portion when the sheet-like connected staple is drawn to be delivered. Therefore, the staple refill of the invention has the effect that the load applied onto the feeding means is decreased. Further, in the staple refill according to the invention, the delivery passage is curved upward from the discharge port toward the ins1de of the storage portion, and the backward movement preventing member is provided in the curved delivery passage. Therefore, the latching force can be weakened in drawing forth the sheet- like connected staple, and the latching force can be strengthened in drawing back the sheet-like connected staple, so that the staple refill of the invention has the effect that the adjustment of the backward movement preventing member is no: required. In the staple refill according to the invention, the backward movement preventing member slides not on the upper surface where the bonding agent is applied and the bonding tape adheres, but on the lower surface of the sheet-like connected staple on the same s1de as the feeding means. Therefore, the backward movement preventing member is difficult to slide, so that the staple refill of the invention has the effect that the sheet-like connected staple can securely be latched. Further, s1nce the backward movement preventing member can slide in the center of the lower surface of the sheet-like connected staple, so that the backward movement preventing member can be latched in a well-balanced mariner in the sheet-like connected staple. Therefore, the staple refill of the invention has the effect that the poss1bility of the bending of the sheet-like connected staple can extremely be decreased. Furthermore, in the staple refill according to the invention, s1nce the backward movement preventing member is integrated with the refill, it is not necessary to install the backward movement preventing member in the refill, so that the staple refill of the invention has the effect that the assembly of the staple refill can eas1ly be performed. In the staple refill acccurding to the invention, the projection strip sliding on the outer surface of the sheet- like connected staple wound in a roll shape is provided in the inner surface of the storage portion, and the whole outer surfaces of the sheet-like connected staple do not come into contact with the bottom surface of the storage portion, but a part of the outer surface comes into contact with the bottom surface, so that the contact area is small. Therefore, the staple refill of the invention has the effect that the sheet-lice connected staple can smoothly be rotated. In the staple refill according to the invention, the opening communicated with the storage portion is formed in the refill, so that the staple refill of the invention has the effects that the press1ng member such as the cushion material can be mounted by utilizing the opening in packaging the staple refill such that the sheet-like connected staple stored in the storage portion does not move during the transportation, the leading edge pos1tion of the sheet-like connected staple cannot be shifted, and a state such as a remaining amount of sheet-like connected staple can be confirmed by utilizing the opening. Description of the Reference Numerals and s1gns S sheet-like connected staple s1 leading end portion s2 upper surface s3 lower surface s4 roll winding portion S5 drawn-forth portion 1 staple refill 2 refill 3 upper case 5 lower case 6 upper wall 7 left wall 7a circular wall 7b lower wall 8 opening 9 right wall 9a circular wall 9b lower wall 11 upper semi-cylindrical wall 12 vertical wall 13 curved wall 13a lower surface (upper guide surface) 14 latch hole 15 horizontal wall 15a lower surface 18 grip arm 19 rib 20 guide projection strip 21 lower wall 22 arc wall 23 linear wall 23a upper surface 25 guide projection (guide projection portion) 2 6 one surface (lower guide surface) 27 the other surface 29 top portion 30 notch portion 31 backward movement preventing member 31a leading edge 32 notch recessed portion 35 guide band (projection strip) 36 latch pawl 40 storage chamber (storage portion) 42 second guide passage 43 first guide passage 4 5 delivery passage 4 6 discharge port 47 upper guide surface 4 8 lower guide surface 50 stapler main oody 51 cartridge 52 lower wall 53 engaging projection 55 backward movement preventing member 56 insertion place 57 lower case 58 guide projection 59 one surface 60 long hole Industrial Applicability The invention can be applied to a motor-driven stapler with which a copying machine, a printing machine, and the like are equipped. WE CLAIM : 1. A staple refill detachably attachable to a stapler main body or a cartridge provided in the stapler main body, said staple refill compris1ng : a storage portion lor storing a sheet-like connected staple wound in a roll shape ; a discharge port for discharging the sheet-like connected staple stored in the storage portion ; and a delivery passage for delivering a leading end portion of the sheet-like connected staple stored in the storage portion to the discharge port ; wherein the delivery passage is curved upward from said discharge port toward an ins1de of said storage portion for delivering the leading end portion located in an upper s1de of the sheet-like connected staple to the discharge port ; and wherein the delivery passage is provided with a backward movement preventing member for preventing the movement of the sheet-like connected staple toward the storage portion s1de. 2. A staple refill as claimed in claim 1, wherein the backward movement preventing member is provided integrally on the staple refill. 3. A staple refill as claimed in claim 1, wherein the backward movement prevent ing member is formed such that a leading edge slides on the lower surface s1de of the sheet- like connected staple to latch a connecting recess portion between staples. 4. A staple refill as claimed in claim 2, wherein the backward movement preventing member is formed such that a leading edge slides on the lower surface s1de of the sheet- like connected staple to latch a connecting recess portion between staples. 5. A staple refill as claimed in any one of claims 1 to 4, wherein the delivery passage is comprised of a first guide passage communicating with the discharge port and formed in a substantially linear shape, and a second guide passage communicating with said storage portion and curved upward ; wherein the second guide passage is provided with the backward movement preventing member. 6. A staple refill as claimed in claim 5, wherein the delivery passage is provided with an upper guide surface for guiding an upper surface of the sheet- like connected staple and a lower guide surface for guiding a lower surface of the ,3heet-like connected staple ; wherein the upper guide surface of the second guide passage is coupled to an inner surface of the storage portion ; and wherein the lower guide surface of the second guide passage is formed by a curved, surface on a discharge port s1de of a guide projection portion protruding in the storage portion. 7. A staple refill as claimed in claim 6, wherein the backward movement preventing member is formed to protrude from a surface on a discharge port s1de of the guide projection portion. 8. A staple refill as claimed in claim 6 or 7, wherein the surface on the discharge porr s1de of the guide projection portion is formed in a curved shape for guiding the sheet- like connected staple stored in the storage portion. 9. A staple refill as claimed in claim 1, wherein a projection strip is provided in an inner surface of the storage portion to slide on an outer surface of the sheet- like connected staple wound in a roll shape for smooth rotation of the sheet-like connected staple. 10. A staple refill as claimed in claim 1, wherein an opening communicating with the storage portion is formed in the staple refill. A staple refill which can be stored in a refill storing section in such a manner that the leading one of the sheet-like joined staples wobad In roll form n on the upper side and which is adapted to lessent the load on a send-out means for stnding out the leading one of the sheet-like joined staples in a stapler main body. The staple refill (1) is removably attached to a cartridge (51) installed in a stapler main body (50). A refill (2) comprises a storing; section (40) for staring Sheet-like joined staples (S) wound in roll form, a discharge port (46) for discharging the sheet-like joined staples (S), and a lead-out passage (43) for leading out die leading part (S1) of the sheet-lite joined staples (S) into the discharge port (46). The lead-out passage (45) is upwardly bent from the discharge port (46) toward the interior of the storing section (40), so that the leading part (S1) positioned on the upper rids of the sheet-like Joined staples (S) is land out to the discherge port (46). The lead-out passage (45) is provided with a retrograkls motion preventivs member (31) which prevents.

Full Text

STAPLE REFILL
FIELD OF THE INVENTION
The present invention relates to a staple refill in
which a sheet-like connected staple wound in a roll shape
is stored.
BACKGROUND OF THE INVENTION
For example, as disclosed in Japanese patent
Application Laid-Open No. H9-136271 (Patent Reference 1),
the conventional staple refill in which the sheet-like
connected staple wound in a roll shape is stored has a
refill which is detachably attached to a stapler main body
or a cartridge provided in the stapler main body. The
refill includes a storage portion in which the sheet-like
connected staple is stored, a discharge port which
discharges the sheet-like connected staple stored in the
storage portion, and a delivery passage which delivers a
leading end portion of the sheet-like connected staple
stored in the storage portion to the discharge port. The
delivery passage is formed in a substantially linear shape,
and is formed along a lower surface in the storage portion.
A metal backward movement preventing member which is formed
independently of the refill is attached to an upper portion
of the delivery passage. In the sheet-like connected
staple, many linear staples are arrange in a crosswise
direction while being in contact with one another, and a

bonding agent is applied to an upper surface to couple the
staples in a band shape. Further, the sheet-like connected
staple are caused to adhere in the center of the upper
surfaces in the lengthwise direction by an adhesive tape,
which prevents the linear staple from being separated. The
sheet-like connected staple is wound in a roll shape while
the upper surface faces the outside, and the sheet-like
connected staple is stored in the staple refill.
In the conventional staple refill in which the sheet-
like connected staple wound in a roll shape is stored, the
sheet-like connected staple is stored in the storage
portion of the refill such that a leading end portion of
the sheet-like connected staple is located in a lower
portion of the storage portion, and the leading end portion
of the sheet-like connected staple is linearly stretched
along the lower surface of the storage portion and the
delivery passage. When the leading end portion of the
sheet-like connected staple is delivered from the discharge
port by feeding means such as a feeding pawl or a feeding
roller provided in the stapler main body or the like, the
whole sheet-like connected staple is placed on a drawn-
forth portion which is linearly drawn. Therefore, there is
a problem that a weight of the sheet-like connected staple
is applied to the feeding means as a load. In drawing
forth the sheet-like connected staple, because the whole
sheet-like connected staple is moved forward, the sheet-
like connected staple abuts on an' inner surface of the

storage portion, and the larger-than designed load is
applied to the feeding means due to friction action, which
results in the problem that it is difficult for the feeding
means to feed the leading end portion of the sheet-like
connected staple.
In the conventional staple refill, the backward
movement preventing member slides on the drawn-forth
portion which is linearly drawn. When the sheet-like
connected staple is drawn forth on the discharge port side,
the backward movement preventing member is bent in the
discharge port, and the drawing-forth of the sheet-like
connected staple is not obstructed. On the contrary, when
the sheet-like connected staple is drawn back toward the
storage portion side, the backward movement preventing
member is latched in a connecting recess portion between
the staples of the sheet-like connected staple, which
prevents the drawing-back of the sheet-like connected
staple. Thus, the backward movement preventing member
always slides on the sheet-like connected staple. However,
when contact pressure is excessively strong in the slide,
the load applied onto the feeding means for feeding the
sheet-like connected staple is increased. On the other
hand, when the contact; pressure is excessively weak in the
slide, drawing-back resistance of the sheet-like connected
staple is decreased. Therefore, there is the problem that
the backward movement; preventing member is difficult to
adjust.

The feeding means is pressed to latch the lower
surface of the sheet-like connected staple, and the sheet-
like connected staple is fed forward. As described above,
the bonding agent is applied to the upper surface and the
adhesive tape adheres to the center of the upper surface
toward the lengthwise direction. In the conventional
staple refill, the backward movement preventing member
slides on the upper surface of the sheet-like connected
staple to which the bonding agent is applied. Therefore,
the backward movement preventing member does not behave
well in some cases because the backward movement preventing
member slips. Further, the backward movement preventing
members slide on both sides of the sheet-like connected
staple across the adhesive tape, and there is a possibility
that the sheet-like connected staple is bent when one of
the backward movement preventing members does not behave
well. There is also the problem that both the backward
movement preventing members are difficult to adjust so as
to behave well in the same manner. Further, because the
backward movement preventing member is produced
independently of the refill, the a labor hour is required
to attach the backward movement preventing member to the
refill, and the adjustment is required in the attachment of
the backward movement preventing member as described above.
Therefore, there is the problem that the backward movement
preventing member cannot easily be installed in the refill.
In the conventional staple refill, because the backward

movement preventing member made of a metal material is
installed, it is necessary to separate the backward
movement preventing member into each material in disposal,
which results in the problem that the disposal of the
backward movement preventing member becomes troublesome.
In the conventional staple refill, when the sheet-
like connected staple wound in a roll shape is stored in
the storage portion of the refill, the whole outer surface
of the sheet-like connected staple is stored while being in
contact with a bottom surface of the storage portion. When
the sheet-like connected staple is drawn toward the
discharge port side, because the whole outer surface of the
sheet-like connected staple is rotated while sliding on the
bottom surface of the storage portion, the frictional
resistance is increased, which results in the problem that
the load applied onto the feeding means for feeding the
sheet-like connected staple becomes large.
In the conventional staple refill, the sheet-like
connected staple wound in a roll shape is stored in the
storage portion of the refill, and the sheet-like connected
staple is oscillated in the storage portion during
transportation, which results in the possibility that the
sheet-like connected staple wound in a roll shape is
released. Further, in the opaque refill, the inside of the
refill cannot be seen, which results in the problem that a
state of the sheet-like connected staple and a remaining
amount of sheet-like connected staple cannot be confirmed.

In view of the foregoing, a first object of the
invention is to provide a staple refill, in which the
sheet-like connected staple wound in a roll shape can be
stored in the storage portion of the staple refill while
the leading end portion of the sheet-like connected staple
is located in the upper portion of the storage portion and
the load applied onto the feeding means of the stapler main
body can be decreased because the sheet-like connected
staple is not placed on the drawn-forth portion which is
drawn and fed. A second object of the invention is to
provide a staple refill, in which the delivery passage is
curved upward from the discharge port toward the inside of
the storage portion, the backward movement preventing
member is formed in the delivery passage, the backward
movement preventing member is inclined downward to weaken
the latching force when the sheet-like connected staple is
fed, and the backward movement preventing member is
inclined upward to strengthen the latching force when the
sheet-like connected staple is drawn back, and thereby the
adjustment of the backward movement preventing member is
not required.
A third object of the invention is to provide a
staple refill, in which the backward movement preventing
member slides not on the upper surface of the sheet-like
connected staple where the bonding agent is applied and the
adhesive tape adheres, but on the lower surface of the
sheet-like connected staple with which the feeding means of

the stapler main body is made in contact, the sheet-like
connected staple can securely be latched, the backward
movement preventing member car. slide in the center of the
sheet-like connected staple, and thereby the possibility
that the sheet-like connected staple is fed while being
bent is eliminated. A Eourth object of the invention is to
provide a staple refill, in which because the backward
movement preventing member is integrated with the staple
refill, the labor hour for attaching the backward movement
preventing member to the staple refill is eliminated, and
the staple refill can easily be assembled.
A fifth object of the invention is to provide a
staple refill, in which a projection strip slidinq on the
outer surface of the sheet-like connected staple wound in a
roll shape is provided in the storage portion of the staple
refill, a contact area with the outer surface of the sheet-
like connected staple is lessened to decrease the
frictional resistance, and thereby the rotation of the
sheet-like connected staple can be smoothed. A sixth
object of the invention is to provide a staple refill in
which there is formed an opening that can be utilized in
order to press the sheet-like connected staple stored in
the storage portion of the staple refill so as not to move
and that allows for confirmation of the inside the storage
portion.
SUMMARY OF THE INVENTION

In order to solve achieve the object, there is
provided a staple refill according to a first aspect of the
invention which is detachably attached to a stapler main
body or a cartridge provided in the stapler main body, the
staple refill including a storage portion in which a sheet-
like connected staple wound in a roll shape is stored, a
discharge port which discharges the sheet-like connected
staple stored in the storage portion, and a delivery
passage which delivers a leading end portion of the sheet-
like connected staple stored in the storage portion to the
discharge port, wherein the delivery passage is curved
upward from the discharge port toward an inside of the
storage portion; the delivery passage delivers the leading
end portion to the discharge port, the leading end portion
being located in an upper side of the sheet-like connected
staple; and a backward movement preventing member is
provided in the delivery passage, the backward movement
preventing member preventing movement of the sheet-like
connected staple toward the storage portion side.
In order to solve achieve .the object, there is
provided a staple refill according to a second aspect of
the invention wherein the backward movement preventing
member is integrated with the staple refill.
In order to solve achieve the object, there is
provided a staple refill according to a third and fourth
aspect of the invention wherein the backward movement
preventing member is formed such that a leading edge slides

on the lower surface side of the sheet-like connected
staple to latch a connecting recess portion between
staples.
In order to solve achieve the object, there is
provided a staple refill according to a fifth aspect of the
invention wherein the delivery passage includes a first
guide passage and a second guide passage, the first guide
passage communicated with the discharge port and being
formed in a substantially linear shape, the second guide
passage communicated with the storage portion and being
curved upward; and the; backward movement preventing member
is provided in the second guide passage.
In order to solve achieve the object, there is
provided a staple refill according to a sixth aspect of the
invention wherein the delivery passage includes an upper
guide surface and a lower guide surface, the upper guide
surface guiding an upper surface of the sheet-like
connected staple, the lower guide surface guiding a lower
surface of the sheet-like connected staple; the upper guide
surface of the second guide passage is coupled to an inner
surface of the storage portion; and the lower guide surface
of the second guide passage is formed by a curved surface
on the discharge port side, the curved surface projected
toward an inside of the storage portion and being included
in a guide projection portion.
In order to solve achieve the object, there is
provided a staple refill according to a seventh aspect of

the invention wherein the backward movement preventing
member is formed so as to be projected from a surface on
the discharge port side of the guide projection portion.
In order to solve achieve the object, there is
provided a staple refill according to a eighth aspect of
the invention □ wherein the surface on the discharge port
side of the guide projection, portion is formed in a curved
shape so as to guide the sheet-like connected staple stored
in the storage portion.
In order to solve achieve the object, there is
provided a staple refill according to a ninth aspect of the
invention which is detachably attached to a stapler main
body or a cartridge provided in the stapler main body, the
staple refill including a storage portion in which a sheet-
like connected staple wound, in a roll shape is stored, a
discharge port which discharges the sheet-like connected
staple stored in the storage portion, and a delivery
passage which delivers a leading end portion of the sheet-
like connected staple stored in the storage portion to the
discharge port, wherein a backward movement preventing
member is provided in the delivery passage, the backward
movement preventing member preventing movement of the
sheet-like connected staple toward the storage portion
side; and a projection strip is provided in an inner
surface of the storage portion, the projection strip
sliding on an outer surface of the sheet-like connected
staple wound in a roll shape to smooth rotation of the

sheet-like connected staple.
In order to achieve the object, a staple refill,
according to a tenth aspect of the invention, is detachably
attached to a stapler main body or a cartridge provided in
the stapler main body, the staple refill including a
storage portion in which a sheet-like connected staple
wound in a roll shape is stored, a discharge port which
discharges the sheet-lake connected staple stored in the
storage portion, and a delivery passage which delivers a
leading end portion of the sheet-like connected staple
stored in the storage portion to the discharge port,
wherein a backward movement preventing member is provided
in the delivery passage, the backward movement preventing
member preventing movement of the sheet-like connected
staple toward the storage portion side ; and an opening
communicated with the storage portion is formed in the
staple refill.
BRIEF DESCRIPTION OF THE: ACCOMPANYING DRAWINGS
FIG. 1 is an overall perspective view showing an
embodiment of a staple refill according to the invention;
Fig. 2 is an exploced perspective view of Fig. 1 ;
Fig. 3 is a sectioral perspective view of Fig. 1;
Fig. 4 is a sectioral side view of Fig. 1 ;
Figs. 5a, 5b, 5c, 5d and 5e are respectively, top,
front, side and bottom and rear views of the staple
refill of Fig. 1 ;
Figs. 6(a), 6(b) and 6(c) are sectional views showing
a main part of

Fig. 1;
Fig. 7 is a perspective view showing a state in which
the staple refill is attached to a cartridge of a stapler
main body;
Fig. 8 is an explanatory view showing an operation of
the staple refill according to the invention;
Fig. 9 is an overall perspective view showing another
embodiment of a staple refill according to the invention;
and
Fig. 10 is an exploded perspective view of Fig. 9.
DEATILED DESCRIPION OF THE PREFERRED EMBODIMENT
Embodiments of a staple refill according to the
invention will be described below with reference to Figs. 1
to 10. Fig. 1 is an overall perspective view showing an
embodiment of a staple refill according to the invention.
Fig. 2 is an exploded perspective view of Fig. 1. Fig. 3
is a sectional perspective view of Fig. 1. Fig. 4 is a
sectional side view of Fig. 2. Fig. 5 is a six-side view
of the staple refill of Fig. 1, Fig. 5A is a top view when
the staple refill is viewed from above, Fig. 5B is a front
view when the staple refill is viewed from a front side,
Fig. 5C is a side view when the staple refill is viewed
from a side face, Fig. 5D is a bottom view when the staple
refill is viewed from below, and Fig. 5E is a rear view
when the staple refill is viewed from a rear side. Fig. 6
is a sectional view showing a main part of Fig. 1. Fig. 7

is a perspective view showing a state in which the staple
refill is attached to a cartridge of a stapler main body.
Fig. 8 is an explanatory view showing an operation of the
staple refill according to the invention. Fig. 9 is an
overall perspective view showing another embodiment of a
staple refill according to the invention. Fig. 10 is an
exploded perspective view of Fig. 9.
As shown in Fig, 7, a staple refill 1 is detachably
attached to a stapler main body 50 or a cartridge 51
provided in the stapler main body 50. As shown in Figs. 3
and 4, the staple refill 1 includes a storage portion 40, a
discharge port 46, and a delivery passage 45. A sheet-like
connected staple S wound in a roll shape is stored in the
storage portion 40. The discharge port 4 6 discharges the
sheet-like connected staple S stored in the storage portion
40. The delivery passage 45 delivers a leading end portion
S1 of the sheet-like connected staple S stored in the
storage portion 40 to a discharge port 46.
The delivery passage 45 is curved upward from the
discharge port 4 6 toward the inside of the storage portion
40 so as to deliver the leading end portion S1, located on
the upper side of the sheet-like connected staple S, to the
discharge port 46. A backward movement preventing member
31 which prevents the sheet-like connected staple S from
moving toward the side of the storage portion 40 is
provided in the delivery passage 45. The backward movement
preventing member 31 is integrated with the staple refill

The backward movement preventing member 31 is formed
such that a leading edge 31a slides on the side of a lower
surface S3 of the sheet-like connected staple S to latch a
connecting recess portion between the staples. The
delivery passage 45 includes a first guide passage 43 and a
second guide passage 42. The first guide passage 43
substantially formed in a linear shape is communicated with
the discharge port 46. The second guide passage 42 curved
upward is communicated with the storage portion 40. The
backward movement preventing member 31 is provided in the
second guide passage 4 2 while being exposed.
The delivery passage 45 includes an upper guide
surface 47 and a lower guide surface 48. The upper guide
surface 47 guides an upper surface S2 of the sheet-like
connected staple S, and the lower guide surface 48 guides
the lower surface S3 of the sheet-like connected staple S.
An upper guide surface 13a of the second guide passage 42
is communicated with an inner surface 41 of the storage
portion 40. A lower guide surface of the second guide
passage 42 is formed by a curved surface 26 on the side of
the discharge port 46. The curved surface 26 is included
in a guide projection portion 25 projected in the storage
portion 40. The backward movement preventing member 31 is
formed so as to be projected from the surface 26 of the
guide projection portion 25 on the side of the discharge
port 46. A surface 27 of the guide projection portion 25

on the side of the storage portion 40 is curved so as to
guide the sheet-like connected staple S stored in the
storage portion 40.
Projection strips 20 and 35 are provided in an inner
surface of the storage portion 40 of the staple refill 1.
The projection strips 20 and 35 slides on the outer surface
of the sheet-like connected staple S wound in a roll shape,
and smoothly rotates the sheet-like connected staple S. An
opening 8 communicated with the storage portion 4 0 is
formed in the staple refill 1.
The staple refill will be described in detail. As
shown in Figs. 1 and 2, a refill 2 of the staple refill 1
includes an upper case 3 and a lower case 5 which is
detachably fixed to the upper case 3. The upper case 3 is
integrally formed by a synthetic resin, and includes an
upper wall 6, a left wall 7 provided in the left end of the
upper wall 6, and a right wall 9 provided in the right end
of the upper wall 6.
The upper wall 6 includes an upper semi-cylindrical
wall 11, a vertical wall 12 whose upper end is coupled to a
front end of the upper semi-cylindrical wall 11, a curved
wall 13 whose one end is coupled to a lower end of the
vertical wall 12, and a horizontal wall 15 whose rear end
is coupled to the other end of the curved wall 13. The
left wall 7 and the right wall 9 include circular walls 7a
and 9a and lower walls 7b and 9b respectively. The lower
walls 7b and 9b, which extend substantially in a horizontal

direction, are coupled to lower ends of the circular walls
7a and 9a respectively. The lower walls 7b and 9b are
projected downward from the horizontal wall 15. Latch
holes 14 and 14 are formed in the lower walls 7b and 9b.
A grip arm 18 extending backward is formed in the
upper portion of the upper semi-cylindrical wall 11. A rib
19 reinforcing the curved wall 13 is formed in the upper
surface of the curved wall 13. The opening 8 is formed in
the rear portion of the upper semi-cylindrical wall 11.
Further, the guide projection strip 20 guiding the sheet-
like connected staple S is provided in the inner surface of
the upper wall 6 of the upper case 3, i.e., in the inner
surfaces of the upper semi-cylindrical wall 11, the
vertical wall 12, the curved wall 13, and the horizontal
wall 15.
As shown in Figs. 3 a.nd 4, similarly to the upper
case 3, the lower case 5 is integrally formed by a
synthetic resin, and includes a lower wall 21. The lower
wall 21 includes an arc wall 22 and a linear wall 23. The
arc wall 22 is formed in a quarter arc shape, and the rear
end of the linear wall 23 is coupled to the front end of
the arc wall 22. The mound-shaped guide projection 25 is
formed in the linear wall 23. One surface 26 (on the side
of the discharge port 4 6) of the guide projection (guide
projection portion) 25 is curved such that a substantially
constant gap is formed with a lower surface 13a of the
curved wall 13 of the upper case 3. The other surface 27

(on the side of the storage portion 40) of the guide
projection 25 is curved such that an arc is formed like the
arc wall 22. A top portion 29 of the guide projection 25
is formed in a semi-circular shape.
A notch portion 30 is formed in a substantially
intermediate portion of the guide projection 25. The pawl-
shaped backward movement preventing member 31 is integrally
provided in the linear wall 23. The backward movement
preventing member 31 is located in the notch portion 30,
and is projected from the curved one surface 26. In the
linear wall 23, a substantially U-shaped notch recessed
portion 32 is formed in the front portion, and the rear
portion extends beyond the arc wall 22. The guide band
(projection strip) 35 guiding the sheet-like connected
staple S is projected in the inner surface of the lower
wall 21 of the lower case 5, i.e., in the inner surfaces of
the arc wall 22, the guide projection 25, and the linear
wall 23. Latch pawls 3 6 and 36 are formed on both sides of
the lower wall 21, and the latch pawls 36 and 36 are
detachably latched in latch holes 14 and 14 of the upper
case 3.
In the staple refill 1, when the lower case 5 is
fitted between the lower wall 7b of the left wall 7 and the
lower wall 9b of the right wall 9 of the upper case 3, the
latch pawls 36 and 36 of the lower case 5 is latched in the
latch holes 14 and 14 of the upper case 3 to assemble the
refill 2. In the assembly, as shown in Fig. 3, the sheet-

like connected staple S is placed in the lower case 5, when
the sheet-like connected staple S is stored in the upper
case 3 such that the leading end portion S1 of the sheet-
like connected staple S wound counterclockwise is located
in the upper portion of the upper case 3.
In the refill 2, the cylindrical storage chamber 4 0
is formed by the upper semi-cylindrical wall 11 and
vertical wall 12 of the upper wall 6, the arc wall 22 and
the other surface (on the side of the storage portion 40)
27 of the guide projection (guide projection portion) 25 of
the lower case 5, and the left wall 7 and right wall 9.
The sheet-like connected staple S is positioned on the
lowest linear wall 23 by the arc wall 22 of the lower case
5 and the other surface 27 of the guide projection 25.
In the refill 2, the second guide passage 42 curved
smoothly upward is formed by the lower surface 13a of the
curved wall 13 of the upper case 3, one surface (on the
side of the discharge port 46) 26 of the guide projection
25 of the lower case 5, the left wall 7 and right wall 9.
The second guide passage 42 is upwardly curved toward the
side of the storage portion 40, and is communicated with
the storage portion 40. In the refill 2, the substantially
linear first guide passage 43 is formed by a lower surface
15a of the horizontal wall 15 of the upper case 3, an upper
surface 23a of the linear wall 23 of the lower case 5, the
left wall 7 and right wall 9. That is, the delivery
passage 45 is formed by the first guide passage 43 and the

second guide passage 42. The discharge port 46 is formed
at the front end of the delivery passage 45, and the sheet-
like connected staple S is sequentially discharged from the
leading end portion S1.
The delivery passage 45 includes the upper guide
surface 47 guiding the upper surface S2 of the sheet-like
connected staple S and the lower guide surface 48 guiding
the lower surface S3 of the sheet-like connected staple S.
The upper guide surface 47 is formed by the lower surface
15a of the horizontal wall 15 of the upper case 3 and the
lower surface 13a of the curved wall 13 of the upper case
3. The lower guide surface 48 is formed by the upper
surface 23a of the linear wall 23 of the lower case 5 and
one surface (on the side of the discharge port 46) 26 of
the guide projection 2 5. On the upper guide surface 47 of
the delivery passage 45, the two guide projection strips 20
are provided along a moving direction of the sheet-like
connected staple S. The guide projection strip 20 is a
strip-shaped projection portion which is slightly projected
from the upper guide surface 47 toward the side of the
sheet-like connected staple S. The guide projection strip
20 decreases a contact area between the upper guide surface
47 and the sheet-like connected staple S to decrease slide
resistance in moving the sheet-like connected staple S, and
thereby the sheet-like connected staple S is smoothly drawn
forth. The notch recessed portion 32 is provided at a
position facing the horizontal wall 15 of the upper guide

surface 47 of the lower guide surface 48. The notch
recessed portion 32 is a portion which brings a feeding
pawl (feeding roller) of the stapler main body 50 into
contact with the lower surface S3 of the sheet-like
connected staple S. The sheet-like connected staple S is
drawn from the storage portion 40 by the notch recessed
portion 32, and is delivered to the discharge port 46.
The backward movement preventing member 31 is
projected toward the inside of the second guide passage 42,
and a leading edge 31a extends to a neighborhood of the
lower surface 13a of the curved wall 13. The backward
movement preventing member 31 can be bent due to elasticity
of the synthetic resin material. The leading edge 31a of
the backward movement preventing member 31 slides on the
lower surface S3 of the sheet-like connected staple S to
latch the connecting recess portion between the staples of
the sheet-like connected staple S, which prevents the
backward movement of the sheet-like connected staple S
towards the side of the storage portion 40. The shape of
the backward movement preventing member 31 is not
particularly limited. For example, the backward movement
preventing member 31 can obliquely be provided as shown in
Fig. 6A, the backward movement preventing member 31 can be
provided in a substantially L-shape as shown in Fig. 6B,
and the backward movement preventing member 31 can be
provided in a substantially n--shape as shown in Fig. 6C.
As described above, the backwaxd movement preventing member

31 is formed in a pawl shape, and the leading edge 31a
strongly presses the sheet-like connected staple S
(particularly drawn-forth portion S5) against the side of
the lower surface 12a of the curved wall 13 during
transportation. Therefore, there is no possibility that
the sheet-like connected staple S is drawn from the staple
refill 1 due to the excessive shock or the like. In the
case where the staple refill 1 is set, the portion
projected from the lower wall 21 is returned into the
refill, which rotates the backward movement preventing
member 31 counterclockwise. The rotation of the sheet-like
connected staple S slightly retreats the leading edge 31a
of the backward movement preventing member 31 from the
lower surface 13a of the curved wall 13 to decrease the
pressing force to the sheet-like connected staple S.
Therefore, moving resistance of the sheet-like connected
staple S toward the feeding direction is decreased to
perform the staple feeding more smoothly.
A leading tape (not shown) provided in the leading
end portion S1 of the sheet-like connected staple S is
drawn from the discharge port 46. When the leading tape is
pulled, the sheet-like connected staple S provided in the
storage chamber 40 of the staple refill 1 is rotated and
the leading edge of the leading tape is located at the
discharge port 46. The staple refill 1 is attached to the
cartridge 51 which is detachably mounted to the stapler
main body 50, and the cartridge 51 is mounted to the

stapler main body 50. When . the stapler main body 50 is
driven, the leading end portion S1 of the sheet-like
connected staple S is intermittently drawn toward the
driver side by feeding means (for example, feeding pawl and
feeding roller). A roll winding portion S4 of the sheet-
like connected staple S is not placed on a drawn-forth
portion S5, which decreases a load on the feeding means.
The whole outer surfaces of the roll winding portion S4 of
the sheet-like connected staple S do not come into contact
with the inner surface of the storage chamber (storage
portion) 40, but a part of the roll winding portion S4
comes into contact with the guide projection strip 20
and/or the guide band (projection strip) 35, so that the
contact area is small. Therefore, frictional resistance is
decreased, which further decreases the load on the feeding
means.
When the leading end portion S1 of the sheet-like
connected staple S is drawn by the feeding means of the
stapler main body 50, as shown, in Fig. 8A, the drawn-forth
portion S5 is brought into close contact with the upper
guide surface (the lower surface 13a of the curved wall 13)
of the delivery passage 45, and the leading edge 31a of the
backward movement preventing member 31 slides slightly on
the drawn-forth portion S5 of the sheet-like connected
staple S. Therefore, the sheet-like connected staple S can
securely be delivered while little load is applied onto the
feeding means. When the leading end portion S1 of the

sheet-like connected staple S is returned by a weight of
the roll winding portion S4 in the storage portion 40, as
shown in Fig. 8B, the drawn-forth portion S5 comes into
close contact with one surface 26 of the guide projection
25, and the leading edge 31a,, projected from one surface
26, of the backward movement preventing member 31 securely
latches the sheet-like connected staple S.
In the staple refill 1, the roll winding portion S4
is decreased as the sheet-like connected staple S is drawn.
As shown in Fig. 8C, the sheet-like connected staple S is
delivered to the delivery passage 4 5 after the drawn-forth
portion S5 of the sheet-like connected staple S is lifted
by the top portion 29 of the guide projection 25, so that
the staple refill 1 also functions as described above. The
top portion 29 of the guide projection 25 is formed in a
semi-circular shape, so that the guide projection 25 can
smoothly guide the sheet-like connected staple S.
Thus, the staple refill 1 can store the sheet-like
connected staple S wound in a roll shape in the storage
portion 40 of the refill 2 while the leading end portion S1
is placed in the upper portion of the storage portion 40,
and the roll winding portion S4 is not placed on the drawn-
forth portion S5 when the sheet-like connected staple S is
delivered from the discharge port 46. Therefore, the load
applied onto the feeding means is decreased.
In the conventional staple refill, a backward
movement preventing member slides on a linearly extended

portion of the sheet-like connected staple, and it is
difficult to adjust contact pressure of the backward
movement preventing memoer in the slide. On the contrary,
in the staple refill 1, s1nce the curved delivery passage
45 is utilized as described above, the drawing-forth of the
sheet-like connected staple differs from the drawing-back
of the sheet-like connected staple in the latching force of
the backward movement preventing member 31, and the
latching force of the backward movement preventing member
31 is increased in drawing back the sheet-like connected
staple rather than in drawing forth the sheet-like
connected staple. Therefore, it is not necessary to adjust
the contact pressure of the backward movement preventing
member 31.
In the staple refill 1, s1milarly to the feeding
means of the stapler main body 50, the backward movement
preventing member 31 is pressed to latch the lower surface
S3 of the sheet-like connected staple S, where a bonding
agent is not applied and a bonding tape does not adhere in
a lengthwise direction. Therefore, the backward movement
of the sheet-like connected staple S can securely be
prevented, and the backward movement preventing member 31
can be arranged substantially in the center of the lower
surface S3, so that the sheet-like connected staple S can
be latched in a well-balanced manner.
In the staple refill 1, s1nce the backward movement
preventing member 31 is integrally formed, it is not

necessary to install the backward movement preventing
member made of a metal material in the refill unlike the
conventional staple refill. Therefore, the assembly of the
staple refill 1 can eas1ly be performed, and weight
reduction and cost reduction of the refill 2 can be
achieved. Further, disposal of the staple refill 1 is easy
to perform because it is not necessary to separate the
staple refill 1 into each material.
In the refill 2, s1nce the opening 8 is formed in the
rear portion of the upper semi-cylindrical wall 11 as
described above, the sheet-like connected staple S stored
in the storage chamber 10 can be fixed so as not to move
during the transportation by mounting a press1ng member
such as a cushion material from the opening 8 in packaging
the staple refill 1, which allows the leading edge pos1tion
of the sheet-like connected staple S not to be shifted. In
the usage of the staple refill 1, a state such as a
remaining amount of sheet-like connected staple S can also
be confirmed by utilizing the opening 8.
In the staple refill 1, the backward movement
preventing member 31 is integrated with the lower wall 21
of the lower case 5. Alternatively, as shown in Figs. 9
and 10, substantially L-shaped engaging projections 53 and
53 are formed on both s1des of a plate-shaped lower wall 52
of a lower case 57, and both ends of an insertion plate 56
including backward movement preventing members 55, which
are formed substantially in an inverse U-shape and

separately formed by a synthetic res1n, are engaged to the
engaging projections 53 and 53, and the backward movement
preventing member 55 may be provided in the lower wall 52
of the lower case 57. The backward movement preventing
members 55, which are formed substantially in an inverse U-
shape, are projected from long holes 60 formed in one
curved surface 59 of a substantially mound-shaped guide
projection 58, and the backward movement preventing members
55 press the sheet-like connected staple S.
[Effects of the Invention]
In the staple refill according to the invention, the
leading end portion of the sheet-like connected staple
wound in a roll shape can be stored in the storage portion
of the refill while the leading end portion is placed in
the upper portion of the storage portion, and the sheet-
like connected staple is not placed on the drawn-forth
portion when the sheet-like connected staple is drawn to be
delivered. Therefore, the staple refill of the invention
has the effect that the load applied onto the feeding means
is decreased. Further, in the staple refill according to
the invention, the delivery passage is curved upward from
the discharge port toward the ins1de of the storage
portion, and the backward movement preventing member is
provided in the curved delivery passage. Therefore, the
latching force can be weakened in drawing forth the sheet-
like connected staple, and the latching force can be
strengthened in drawing back the sheet-like connected

staple, so that the staple refill of the invention has the
effect that the adjustment of the backward movement
preventing member is no: required.
In the staple refill according to the invention, the
backward movement preventing member slides not on the upper
surface where the bonding agent is applied and the bonding
tape adheres, but on the lower surface of the sheet-like
connected staple on the same s1de as the feeding means.
Therefore, the backward movement preventing member is
difficult to slide, so that the staple refill of the
invention has the effect that the sheet-like connected
staple can securely be latched. Further, s1nce the
backward movement preventing member can slide in the center
of the lower surface of the sheet-like connected staple, so
that the backward movement preventing member can be latched
in a well-balanced mariner in the sheet-like connected
staple. Therefore, the staple refill of the invention has
the effect that the poss1bility of the bending of the
sheet-like connected staple can extremely be decreased.
Furthermore, in the staple refill according to the
invention, s1nce the backward movement preventing member is
integrated with the refill, it is not necessary to install
the backward movement preventing member in the refill, so
that the staple refill of the invention has the effect that
the assembly of the staple refill can eas1ly be performed.
In the staple refill acccurding to the invention, the
projection strip sliding on the outer surface of the sheet-

like connected staple wound in a roll shape is provided in
the inner surface of the storage portion, and the whole
outer surfaces of the sheet-like connected staple do not
come into contact with the bottom surface of the storage
portion, but a part of the outer surface comes into contact
with the bottom surface, so that the contact area is small.
Therefore, the staple refill of the invention has the
effect that the sheet-lice connected staple can smoothly be
rotated.
In the staple refill according to the invention, the
opening communicated with the storage portion is formed in
the refill, so that the staple refill of the invention has
the effects that the press1ng member such as the cushion
material can be mounted by utilizing the opening in
packaging the staple refill such that the sheet-like
connected staple stored in the storage portion does not
move during the transportation, the leading edge pos1tion
of the sheet-like connected staple cannot be shifted, and a
state such as a remaining amount of sheet-like connected
staple can be confirmed by utilizing the opening.
Description of the Reference Numerals and s1gns
S sheet-like connected staple
s1 leading end portion
s2 upper surface
s3 lower surface
s4 roll winding portion

S5 drawn-forth portion
1 staple refill
2 refill
3 upper case

5 lower case
6 upper wall
7 left wall
7a circular wall
7b lower wall
8 opening
9 right wall
9a circular wall
9b lower wall
11 upper semi-cylindrical wall
12 vertical wall
13 curved wall
13a lower surface (upper guide surface)
14 latch hole
15 horizontal wall
15a lower surface

18 grip arm
19 rib
20 guide projection strip
21 lower wall
22 arc wall
23 linear wall
23a upper surface

25 guide projection (guide projection portion)
2 6 one surface (lower guide surface)
27 the other surface
29 top portion
30 notch portion
31 backward movement preventing member
31a leading edge
32 notch recessed portion
35 guide band (projection strip)
36 latch pawl
40 storage chamber (storage portion)
42 second guide passage
43 first guide passage
4 5 delivery passage
4 6 discharge port
47 upper guide surface
4 8 lower guide surface
50 stapler main oody
51 cartridge
52 lower wall
53 engaging projection

55 backward movement preventing member
56 insertion place
57 lower case
58 guide projection
59 one surface
60 long hole

Industrial Applicability
The invention can be applied to a motor-driven
stapler with which a copying machine, a printing machine,
and the like are equipped.

WE CLAIM :
1. A staple refill detachably attachable to a stapler main
body or a cartridge provided in the stapler main body, said
staple refill compris1ng :
a storage portion lor storing a sheet-like connected
staple wound in a roll shape ;
a discharge port for discharging the sheet-like
connected staple stored in the storage portion ; and
a delivery passage for delivering a leading end portion
of the sheet-like connected staple stored in the storage
portion to the discharge port ;
wherein the delivery passage is curved upward from said
discharge port toward an ins1de of said storage portion for
delivering the leading end portion located in an upper s1de
of the sheet-like connected staple to the discharge port ;
and wherein the delivery passage is provided with a
backward movement preventing member for preventing the
movement of the sheet-like connected staple toward the
storage portion s1de.
2. A staple refill as claimed in claim 1, wherein the
backward movement preventing member is provided integrally
on the staple refill.
3. A staple refill as claimed in claim 1, wherein the
backward movement prevent ing member is formed such that a
leading edge slides on the lower surface s1de of the sheet-
like connected staple to latch a connecting recess portion
between staples.

4. A staple refill as claimed in claim 2, wherein the
backward movement preventing member is formed such that a
leading edge slides on the lower surface s1de of the sheet-
like connected staple to latch a connecting recess portion
between staples.
5. A staple refill as claimed in any one of claims 1 to 4,
wherein the delivery passage is comprised of a first guide
passage communicating with the discharge port and formed in
a substantially linear shape, and a second guide passage
communicating with said storage portion and curved upward ;
wherein the second guide passage is provided with the
backward movement preventing member.
6. A staple refill as claimed in claim 5,
wherein the delivery passage is provided with an upper
guide surface for guiding an upper surface of the sheet-
like connected staple and a lower guide surface for guiding
a lower surface of the ,3heet-like connected staple ;
wherein the upper guide surface of the second guide
passage is coupled to an inner surface of the storage
portion ; and
wherein the lower guide surface of the second guide
passage is formed by a curved, surface on a discharge port
s1de of a guide projection portion protruding in the
storage portion.
7. A staple refill as claimed in claim 6, wherein the
backward movement preventing member is formed to protrude
from a surface on a discharge port s1de of the guide
projection portion.

8. A staple refill as claimed in claim 6 or 7, wherein the
surface on the discharge porr s1de of the guide projection
portion is formed in a curved shape for guiding the sheet-
like connected staple stored in the storage portion.
9. A staple refill as claimed in claim 1, wherein a
projection strip is provided in an inner surface of the
storage portion to slide on an outer surface of the sheet-
like connected staple wound in a roll shape for smooth
rotation of the sheet-like connected staple.
10. A staple refill as claimed in claim 1, wherein an
opening communicating with the storage portion is formed in
the staple refill.

A staple refill which
can be stored in a refill storing section
in such a manner that the leading one
of the sheet-like joined staples wobad
In roll form n on the upper side and
which is adapted to lessent the load on
a send-out means for stnding out the
leading one of the sheet-like joined
staples in a stapler main body. The
staple refill (1) is removably attached
to a cartridge (51) installed in a stapler
main body (50). A refill (2) comprises
a storing; section (40) for staring
Sheet-like joined staples (S) wound in
roll form, a discharge port (46) for
discharging the sheet-like joined staples
(S), and a lead-out passage (43) for
leading out die leading part (S1) of
the sheet-lite joined staples (S) into
the discharge port (46). The lead-out
passage (45) is upwardly bent from the
discharge port (46) toward the interior
of the storing section (40), so that the
leading part (S1) positioned on the
upper rids of the sheet-like Joined
staples (S) is land out to the discherge
port (46). The lead-out passage (45)
is provided with a retrograkls motion
preventivs member (31) which prevents.

Documents:

379-KOLNP-2006-CORRESPONDENCE.pdf

379-KOLNP-2006-FORM-27-1.1.pdf

379-KOLNP-2006-FORM-27.pdf

379-KOLNP-2006-FROM 27.pdf

379-kolnp-2006-granted-abstract.pdf

379-kolnp-2006-granted-assignment.pdf

379-kolnp-2006-granted-claims.pdf

379-kolnp-2006-granted-correspondence.pdf

379-kolnp-2006-granted-description (complete).pdf

379-kolnp-2006-granted-drawings.pdf

379-kolnp-2006-granted-examination report.pdf

379-kolnp-2006-granted-form 1.pdf

379-kolnp-2006-granted-form 18.pdf

379-kolnp-2006-granted-form 3.pdf

379-kolnp-2006-granted-form 5.pdf

379-kolnp-2006-granted-gpa.pdf

379-kolnp-2006-granted-others.pdf

379-kolnp-2006-granted-reply to examination report.pdf

379-kolnp-2006-granted-specification.pdf

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Patent Number

230214

Indian Patent Application Number

379/KOLNP/2006

PG Journal Number

09/2009

Publication Date

27-Feb-2009

Grant Date

25-Feb-2009

Date of Filing

21-Feb-2006

Name of Patentee

MAX KABUSHIKI KAISHA

Applicant Address

6-6, NIHONBASHI HAKOZAKI-CHO, CHUO-KU, TOKYO 103-8502

Inventors:

#	Inventor's Name	Inventor's Address
1	KISHI KAZUHIKO	C/O MAX KABUSHIKI KAISHA 6-6, NIHONBASHI HAKOZAKI-CHO, CHUO-KU, TOKYO 103-8502
2	SHIMIZU TOSHIO	C/O MAX KABUSHIKI KAISHA 6-6, NIHONBASHI HAKOZAKI-CHO, CHUO-KU, TOKYO 103-8502
3	HIGUCHI KAZUO	C/O MAX KABUSHIKI KAISHA 6-6, NIHONBASHI HAKOZAKI-CHO, CHUO-KU, TOKYO 103-8502

PCT International Classification Number

B25C 5/16

PCT International Application Number

PCT/JP2004/012774

PCT International Filing date

2004-08-27

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	2003-308099	2003-08-29	Japan