Title of Invention	"A SPRAY FORMULATION FOR DETECTING LATENT FINGERPRINTS ON STICKY SIDE OF ADHESIVE TAPE"
Abstract	spray formulation for detecting latent fingerprints on sticky, side of adhesive tapes comprising a non-toxic stain selected from Rose Bengal or Phloxine B having concentration of 1.0-1.2% and the phase transfer catalyst selected from t-tetrabutylammonium iodide or t-tetrabutylammonium hydrogen sulphate having concentration of 0.35-0.40%.

Full Text

Field of the Invention: The invention relates to a spray formulation for detecting latent fingerprints on adhesive tapes. Background of the Invention; Latent fingerprints are one of the most commonly encountered physical evidence at the scene of crime. Development of the latent fingerprints depends upon many factors including type of the surface on which these are impinged. One of the surface on which it is difficult to develop latent fingerprints is the sticky side of adhesive tapes. The use of adhesive tapes has consistently risen over the past few years. These items are now commercially available in a number of hues, shades and textures. The conventional procedures for developing latent fingerprints involve the application of a suitable chemical that converts the colorless sweat deposition from the fingertips into a colored derivative, so that what is latent is rendered visible. In the present innovation, inventors have used Rose Bengal stain, in concert with a phase transfer catalyst to prepare a spray composition that can detect latent fingerprints on a wide range of adhesive tapes. Object of the Invention; The object of this invention is to develop a process for detecting latent fingerprints on adhesive tapes. Other object is to use a spray formulation for detecting latent finger prints on adhesive tapes. Another object is to use specific stain in concert with specific catalyst to detect latent fingerprints on a wide range of adhesive tapes. Yet another object is to use specific catalyst wherein the catalyst brings liaison between the stain and the fingerprint residue to bring out clear and sharp fingerprints. Other object is to develop clear and sharp fingerprints within 2-3 minutes. Another object is to develop a spray composition comprising a non-toxic stain and a phase transfer catalyst. Another object is to detect fingerprints on adhesive tapes that were earlier pasted on different objects. Statement of the Invention; According to this invention there is provided a spray formulation for detecting latent fingerprints on adhesive tapes comprising a nontoxic stain Rose Bengal or Palatine B having concentration of 1.0-1.2% and the phase transfer catalyst t-tetrabutylammonium iodide or t-tetrabutylammonium hydrogen caliphate having concentration of 0.35-0.40% and the process of preparation thereof comprising dissolving 1.0-1.2 gm of Rose Bengal in 100 ml distilled water, followed by addition of 0.35-0.4 gm of t-tetrabutylammonium iodide to a stirring mixture for 30-40 minutes, spraying the contents on adhesive tape bearing latent fingerprints, allowing the adhesive tape to stand under natural conditions for 1-1.5 minutes, washing the adhesive tape under running water for 30-40 seconds followed by photographing the developed fingerprints. Brief Description of the Invention; Here inventors have used t-tetrabutylammonium iodide as the phase transfer catalyst. The catalyst brings a liaison between the stain and the fingerprint residue. Clear and sharp fingerprints develop within 2-3 minutes on the following varieties of adhesive tapes. 1. Sello™tape 2. Brown packaging tape 3. Black electrical tape 4. Double side adhesive tape 5. Invisible tape 6. Decorative shining tape 7. Doctor's tape 8. Surgical tape 9. Currency tape Fingerprints were impinged on tape substrates and were developed on day 1, 2, 4, 6 and 11. The substrates were kept in ambient conditions. The environment was hot, dry and dusty. The temperature varied from 28-31 degree Celsius, while humidity ranged from 19-32 %. Fingerprints were also developed on adhesive tapes removed from different surfaces. After impinging latent fingerprints on Sello™ tape, the latter was pasted on to number of surfaces, such as air conditioner case, painted wall, rusted parts of an almirah, window pane, cardboard and fabric bag. Black electrical tape was rolled on electric wire, bakelite handle of a hand lens and a rubber pipe. One set of tapes were removed from the substrates just after affixing them while the other set of tapes were removed after 24 hours and prints were developed. The invention relates to a process for the preparation of the fingerprint developing spray composition comprising: a. Dissolving 1.0-1.2 gram of Rose Bengal in 100 ml distilled water. b. Adding 0.35-0.40 gram of t-tetrabutylammonium iodide to a. c. Stirring the mixture of step b for 30-40 minutes. d. Spraying the contents prepared in step c on sample latent fingerprints impinged on adhesive tape. e. Allowing the adhesive tape to stand under natural conditions for 1-1.5 minutes. f. Washing the adhesive tape under running water for 30-40 seconds. Yet another aspect of the invention relates to a method of photographing the developed fingerprints. Developed fingerprints were photographed both in macro and micro modes by using a digital camera (Canon digital Ixus 700). Photography was done in daylight. Photomicrography was done with zoom stereomicroscope (Olympus Inc.). All the photographs were stored in the .jpeg format. Still another aspect of the invention relates to a method of detecting latent fingerprints on adhesive tapes after removing the latter from different objects. Detailed description of the Invention; The invention relates to a fingerprint developing spray composition for detecting finger impressions on adhesive tapes. The fingerprint developing spray composition of the present invention is non-toxic, and develops sharp and clear fingerprints. The invention is able to detect fingerprints on a wide range of adhesive tapes. The composition includes a stain, Rose Bengal and a phase transfer catalyst, t-tetrabutylammonium iodide. The composition is stable over prolonged periods of time. The composition is useful both in the laboratory, as well as at other locations, The ingredients of the composition are non-toxic. The composition poses no occupational hazard. The composition is not specific with respect to color, nature or texture of the adhesive tape. It may be use for detecting fingerprints on Sello™ tape, brown packaging tape, black electrical tape, double side adhesive tape, invisible tape, decorative shining tape, doctor's tape, surgical tape and currency tape.The composition detects fingerprints impinged on different varieties of tapes after a lapse of several days. The composition develops latent fingerprints on different varieties of tapes after removing these from different objects. In this case, the prints may be developed after a lapse of up to 24 hours. The fingerprints developed by the method disclosed in the invention are sharp, clear and visible to the naked eye. It takes two to three minutes to develop fingerprints. The method is easy to use and may be used even by an amateurish person. The method requires neither a sophisticated instrument, nor costly equipment. The present invention provides a fingerprint developing spray composition of the formulation comprising a non-toxic mixture of Rose Bengal that ranges from 1.0-1.2% stain and 0.35-0.40% phase transfer catalyst, t-tetrabutylammonium iodide in water. Another embodiment of the invention relates to a fluorescent dye used in the fingerprint developing composition, the dye is selected from a group consisting of Rose Bengal and phloxine B. Further embodiment of the invention provides the phase transfer catalyst selected from a group consisting of t-tetrabutylammonium iodide and t-tetrabutylammonium hydrogensulfate. Another embodiment of the invention provides a process for the preparation of the fingerprint developing spray composition, said process comprising: a. Dissolving 1.0-1.2 gram of Rose Bengal in 100 ml distilled water. b. Adding 0.35-0.40 gram of t-tetrabutylammonium iodide to a. c. Stirring the mixture of step b for 30-40 minutes. d. Spraying the contents prepared in step c on the adhesive tape, bearing sample latent fingerprints. e. Allowing the adhesive tape to stand under natural conditions for 1-1.5 minutes. f. Washing the adhesive tape under running water for 30-40 seconds. In one embodiment the invention provides the stain for the preparation of composition from a group comprising of Rose Bengal and phloxine B. 8 In another embodiment the invention provides a method for detecting fingerprints on adhesive tapes after removing these from the item on which they were pasted up to 24 hours earlier. Further the invention provides a phase transfer catalyst comprising of t-tetrabutylammonium iodide and t-tetrabutylammonium hydrogensulfate. Another embodiment of the invention provides a method of detecting fingerprints comprising applying the fingerprint developing spray on a sample surface of an adhesive tape, allowing the item to stand under natural conditions for 1-1.5 minutes, then washing it under running water for 30-40 seconds, and finally photographing it. The stain and the phase transfer catalyst are added to water and the contents are stirred for 30-40 minutes before applying the solution to the adhesive tapes. . The spray is used to detect fingerprints on sticky surfaces. Different varieties of adhesive tapes, with latent fingerprints impinged on them, have been used for testing the spray formulation. A method for the preparation of a novel, spray fingerprint developing composition is disclosed. The method includes preparing a solution of 1.0-1.2 gram of Rose Bengal in 100 ml of distilled water. To this solution 0.35-0.40 gram of t-tetrabutylammonium iodide was added. The contents were stirred for 30-40 minutes. The spray was applied to the sample fingerprints impinged on the following varieties of adhesive tapes: Sello™ tape, brown packaging tape, black electrical tape, double side adhesive tape, invisible tape, decorative shining tape, doctor's tape, surgical tape and currency tape. After waiting for 1-1.5 minutes, the item was washed under running water for 30-40 seconds. Sharp and clear fingerprints developed. The developed fingerprints were photographed both in macro and micro mode by using a digital camera (Canon digital Ixus 700). Photography was done in daylight. Photomicrography was done with zoom stereomicroscope (Olympus Inc.). All the photographs were stored in the jpeg format. EXAMPLES Example 1 * Preparation of spray composition using Rose Bengal and t-tetrabutylammonium iodide for detecting fingerprints on adhesive tapes A solution of 1.0-1.2 gram of Rose Bengal was prepared in 100 ml of distilled water. To this 0.35-0.40 gram of t-tetrabutylammonium iodide was added. The contents were stirred for 30-40 minutes; The spray was applied to the following varieties of adhesive tapes, bearing sample fingerprints: Sello™ tape, brown packaging tape, black electrical tape, double side adhesive tape, invisible tape, decorative shining tape, doctor's tape, surgical tape and currency tape. After waiting for 1-1.5 minutes, the items were washed under running water for 30-40 seconds. Sharp and clear fingerprints developed. Example 2 Preparation of spray composition using Rose Bengal and t-tetrabutylammonium iodide for detecting fingerprints on used adhesive tapes A solution of 1.0-1.2 gram of Rose Bengal was prepared in 100 ml distilled water. To this 0.35-0.40 gram of t-tetrabutylammonium iodide was added. The contents were stirred for 30-40 minutes. The spray was applied to the following varieties of adhesive tapes: Black electrical tape and Sello™ tape. The former was uncoiled from an electrical cable after 24 hours, while the latter was removed from a painted wall after 24 10 hours. After waiting for 1-1.5 minutes, the tapes were washed under running water for 30-40 seconds. Sharp and clear fingerprints developed. Example 3 Preparation of fingerprint developing spray composition using phloxine B and t-tetrabutylammonium hydrogensulfate A solution of 1.0-1.2 gram of phloxine B was prepared in 100 ml of distilled water. To this 0.35-0.40 gram of t-tetrabutylammonium hydrogensulfate was added. The contents were stirred for 30-40 minutes. The spray was applied to the following varieties of adhesive tapes, bearing sample fingerprints: Black electrical tape and surgical tape. After waiting for 1-1.5 minutes, the items were washed under running water for 30-40 seconds. Sharp and clear fingerprints developed. Example 4 Preparation of fingerprint developing spray composition using phloxine B and t-tetrabutylammonium iodide A solution of 1.0-1.2 grams of palatine B was prepared in 100 ml of distilled water. To this 0.35-0.40 gram of t-tetrabutylammonium iodide was added. The contents were stirred for 30-40 minutes. The spray was applied to the following varieties of adhesive tapes, bearing sample fingerprints: Sello™ tape and brown packaging tape. After waiting for 1-1.5 minutes, the items were washed under running water for 30-40 seconds. Sharp and clear fingerprints developed. Brief Description of the Drawings; Fig. 1 depicts a sample fingerprint developed on doctor's tape using the spray composition. Figure 1 Fingerprint developed on doctor's tape It should be understood that the following examples described herein are for illustrative purposes only and that various modifications or changes in light will be suggested to persons skilled in the art and are to be included within the spirit and purview of this application and the scope of the appended claims. We claim: 1) A spray formulation for detecting latent fingerprints on sticky side of adhesive tapes comprising a non-toxic stain selected from Rose Bengal or Phlnxinc B having concentration of 1.0-1.2% and the phase transfer catalyst selected from t-tetrabutylammonium iodide or 1-tetrabutyiammonium hydrogen sulphate having concentration of 0.35-0.40%. 2) The process of preparation of the spray formulation as claimed in claim 1, comprising dissolving 1.0-1.2 gm of a non-toxic stain selected from Rose Bengal of Phloxine B in 100 ml distilled water, followed by addition of 0.35-0.40 gm of phase transfer catalyst selected from t-tctrabutylammonium iodide or t-tetrabutylammonium hydrogen sulphate stirring the mixture Sot 30-40 minutes.

Documents:

270-DEL-2007-Abstract-(08-08-2011).pdf

270-del-2007-Abstract-(30-03-2012).pdf

270-del-2007-abstract.pdf

270-del-2007-Claims-(30-03-2012).pdf

270-del-2007-claims.pdf

270-DEL-2007-Correspondence Others-(08-08-2011).pdf

270-DEL-2007-Correspondence Others-(20-09-2011).pdf

270-del-2007-Correspondence Others-(30-03-2012).pdf

270-DEL-2007-Correspondence-Others.pdf

270-del-2007-description (complete).pdf

270-del-2007-Description Complete-(30-03-2012).pdf

270-del-2007-Form-1 (30-03-2012).pdf

270-DEL-2007-Form-1-(08-08-2011).pdf

270-DEL-2007-Form-1.pdf

270-del-2007-Form-2 (30-03-2012).pdf

270-DEL-2007-Form-2-(08-08-2011).pdf

270-del-2007-form-2.pdf

270-del-2007-form-26.pdf

270-DEL-2007-GPA-(20-09-2011).pdf