Title of Invention

A VALUE DOCUMENT AND METHOD OF PRODUCTION THEREOF

Abstract This invention relates to a value document, in particular a bank note, having a value document substrate and at least two different feature substances for checking the value document. According to the invention, a first feature substance is incorporated into the volume of the substrate of the value document, and a second feature substance applied to the value document substrate in the form of a coding.
Full Text A Value Document And Method Of Production Thereof
[001] This invention relates to a value document and method of production thereof,
and, in particular a bank note, having a value document substrate and at least
two different feature substances for checking the value document.
[002] The print WO 97/39428 discloses a value document whose substrate has, in
one area, different machine authenticatable authenticity features for different
security levels. The value document contains a machine authenticatable low
security feature which is formed from a single material. Upon an interroga-
tion the low security feature provides a yes/no response indicating the pres-
ence or absence of the interrogated property. The low security feature is used
for authenticity checking in applications where a simple detector is used, for
example retail outlets.
[003] A further, likewise machine authenticatable high security feature has proper-
ties that are difficult to detect allowing an in-depth interrogation of the value
document and a much higher level of authentication. The check of the high
security feature is elaborate and effected for example in central banks. Said
high security feature is a homogeneous mixture of two substances with dif-
ferent physical properties, such as the excitation wavelength for a lumines-
cence emission or coercivity, etc.
[004] The system known from WO 97/39428 has the disadvantage, however, of
permitting an elaborate authenticity check of the value documents but not al-
lowing any statement about the type or value of the particular value docu-
ment. For machine processing of value documents, in particular of bank
notes, it is also desirable to detect by machine the type of document, e.g. the
currency or the denomination of a known currency.
[005] On these premises the invention is based on the problem of proposing a
generic value document that involves not only increased falsification security
but at the same time also a possibility of value recognition.

[006] Value recognition is understood in the context of the present invention to
mean the evaluation of information present in coded form for a certain user
group. The coded information can be, in the case of a bank note, for example
the denomination, the currency, the series, the issuing country or other spe-
cial features of the bank note.
[007] The problem posed is solved by the value document having the features of
the main claim. A production method for such value documents as well as
two methods for checking or processing such value documents are the sub-
ject matter of the coordinated claims. Advantageous developments of the in-
vention are the subject matter of the subclaims.
[008] The inventive value document has a first feature substance incorporated into
the volume of the value document substrate, and a second feature substance
applied to the value document substrate in the form of a coding, which extends
over a predominant part of a surface of the value document. As explained in
detail hereinafter, this combination creates a complex feature system that is
very difficult to imitate for a forger. The feature system permits users from
different user groups each carry out both an authenticity check and value
recognition on the document.
[009] For example, users of one user group can use a characteristic property of the
first feature substance for the authenticity check, while users of another user
group employ a characteristic property of the second feature substance for
the authenticity check. Both user groups can use the coding formed by the
second feature substance for value recognition to be able to carry out not on-
ly the authenticity check but also value recognition on the document without
any great additional effort. The exact implementation of the authenticity
check and the value recognition will be described in detail below.
[0010] Said user groups may be central banks, commercial banks, any commercial
enterprises such as local train services, department stores or vending ma-
chine operators, etc.

[0011] Analysis of the total feature system is exceptionally difficult and elaborate,
since it is not recognizable to third parties which substances and in particular
which substance properties are used for the check by the different user
groups. Even knowledge of the procedure of one user group does not readily
indicate the substances and methods used for the authenticity check and val-
ue recognition by the other user group or groups.
[0012] The first feature substance can fundamentally be incorporated into the vol-
ume of the value document substrate in any distribution or form a given or-
derly structure. According to a preferred embodiment of the invention, the
first feature substance is distributed substantially uniformly within the vol-
ume of the value document substrate, however, so that sufficiently large vol-
ume elements of equal size each contain a substantially equal quantity of the
first feature substance. The distribution can be regular, but also be effected
in a given regular pattern. However, the first feature substance is preferably
incorporated into the substrate volume with a random distribution. If paper is
used as the value document substrate, the first feature substance is preferably
added to the paper stock before sheet formation.
[0013] In an advantageous development of the invention, a third feature substance
which is different from the first feature substance is incorporated into the
volume of the value document substrate. As with the first feature substance,
the distribution of the third feature substance can form a given structure in
the substrate, or be uniform and in particular have a random distribution.
This feature substance can also be admixed to the paper stock. The third fea-
ture substance can be used for the authenticity check of the value document
in addition or as an alternative to the first feature substance.
[0014] The marking substances can also be incorporated into the near-surface area
of a paper substrate. This is done for example by one of the methods de-
scribed in the prints EP-A-0 659 935 and DE 101 20 818, in which the parti-
cles of the first and/or third marking substance are admixed to a gas stream

or a liquid stream and incorporated into a wet paper web. The disclosures of
the stated prints are included in the present application in this respect.
[0015] The first and/or third feature substances are preferably formed by a lumines-
cent substance or a mixture of luminescent substances. The second feature
substance is, in advantageous embodiments, also formed by a luminescent
substance or a mixture of luminescent substances. In particular for the first
and third feature substances it is preferable to use luminescent substances or
mixtures that emit in the infrared spectral range and that in particular have a
complex, difficult-to-imitate spectral emission characteristic. Said emission
characteristic can be used in particular for distinguishing the luminescent
substances from similar luminescent substances. However, it can also be
used for producing a coding by the form of the emission spectra or/and exci-
tation spectra of the luminescent substances. "Infrared spectral range" is un-
derstood according to the invention to be the wavelength range from 750 nm
and more, preferably 800 nm and more. In a preferred embodiment, the sec-
ond feature substance selected is a luminescent substance whose lumines-
cence can be easily excited and detected with commercially available detec-
tors.
[0016] Preferably, at least one of the luminescent feature substances is a lumines-
cent substance based on a host lattice doped with rare earth elements. It is al-
so possible for several or all of the luminescent substances to be formed on
the basis of such a doped host lattice. Said luminescent substances can be ex-
cited e.g. by irradiating directly into the absorption bands of the rare earth
ions. In preferred variants, it is also possible to use absorbent host lattices or
so-called sensitizers, which absorb the excitation radiation and transfer it to
the rare earth ion, which then emits the luminescence. Obviously, the host
lattices and/or the dopants can be different for the different feature sub-
stances in order to obtain different excitation and/or emission ranges.
[0017] In a preferred embodiment, the host lattice absorbs in the visible spectral
range and optionally, in particular in the case of the first or third feature sub-

stance, additionally in the near infrared region up to about 1.1 urn. Excitation
can then be performed with high effectiveness by light sources, such as halo-
gen lamps, LEDs, lasers, flash lamps or xenon arc lamps, so that only small
amounts of the luminescent substance are required. This permits for example
an application of the luminescent substance to the value document by usual
printing processes. Also, the small amount of substance impedes detection of
the used substance by potential forgers. If the host lattice absorbs in the near
infrared up to about 1.1 urn, easily detectable emission lines of the rare earth
ions can be suppressed, leaving only the emission at larger wavelengths that
is more elaborate to detect.
[0018] In an alternative preferred embodiment, luminescent substances are used that
absorb even in the visible spectral range, preferably over most of the visible
spectral range, especially preferably into the near infrared region. Then, too,
emissions in these more easily accessible spectral ranges are suppressed.
[0019] The host lattice can have for example a perovskite structure or a garnet struc-
ture and be doped with a rare earth element emitting in the infrared spectral
range, such as praseodymium, neodymium, dysprosium, holmium, erbium,
thulium or ytterbium. Further possible embodiments of the host lattice and

the dopant are specified in EP-B-0 052 624 or EP-B-0 053 124, whose dis-
closures are included in the present application in this respect.
[0020] According to an advantageous development of the invention, a fourth feature
substance which is different from the second feature substance is applied to
the value document, in particular printed thereon, in addition to the stated
feature substances. The fourth feature substance can in particular be applied
to the value document in the form of a coding to further increase the falsifi-
cation security of the value document.
[0021] The fourth feature substance can in particular be formed by a feature sub-
stance absorbent in the infrared spectral range, a magnetic or electroconduc-
tive feature substance or a substance with an optically variable effect.

[0022] Infrared absorbent feature substances that can be used are for example sub-
stances that absorb significantly in the spectral range above about 1.2 µm, in
particular in the spectral range from about 1.5 µm to 2.2 µm. The infrared
absorbers are preferably substantially colorless or have only weak inherent
color in the visible spectral range. If the infrared absorbent feature substance
does not yet have significant absorption additionally in the near infrared up
to a wavelength of about 0.8 µm, it cannot be detected with commercially
available silicon-based infrared detectors, so that it forms a security feature
that is particularly difficult to find and to imitate.
[0023] The codings formed by the second feature substance and/or one of the other
feature substances can be any kind of signs or patterns, such as an alphanu-
meric character string. Preferably, at least one of the codings is a bar code. A
bar code is understood here to mean any one- or two-dimensional pattern
consisting of stripes or areas with the feature substance or substances
("bars") and stripes or areas without feature substances located between the
bars ("spaces"). As a rule, the bar/space sequence represents a binary number
sequence representing any, also encrypted, information about the value docu-
ment.
[0024] The bar code can in particular be invisible to the naked eye and be only de-
tectable by its emission or absorption in a special spectral range after irradia-
tion with a suitable light source. Bar codes are particularly suitable for ma-
chine readout and provide an almost fault-free read result, primarily in con-
nection with check digits. Bar codes to be used are for example common for-
mats, such as the 2/5 code, the 2/5 interleaved code, the 128 code or the 39
code, but also special formats used only for the inventive value documents. It
is also possible to use two-dimensional bar codes offering a particularly
strongly condensed recording and increased redundancy, which makes them
less sensitive to production tolerances.
[0025] If a plurality of codings are present on the value document, they can be of
the same type or of different types. For example, the second marking sub-

stance can be printed or sprayed on in the form of a bar code, while the
fourth feature substance is printed in the form of an alphanumeric character
string.
[0026] It is preferably provided that at least one of the codings extends over a pre-
dominant part of a surface of the value document, in particular over the sub-
stantially total surface of the value document. This makes it possible to ob-
tain a further increase in the falsification security of the value document,
since gaps or inserted parts of other, including other authentic, documents
manifest themselves as a disturbance in said coding.
[0027] For example, in the case of documents of the same kind, such as bank notes
of the same denomination, such a coding or a part thereof can be provided
with a certain offset from document to document. If the documents are pro-
duced in a continuous format, this can be obtained for instance by using a
print roll whose circumference is a non-integral multiple of the document
size. A row of successive documents can then contain a coding with the
same content or the same form, the individual documents at the same time
being distinguishable from each other due to the different offset. In sheet-by-
sheet printing the same result can be achieved if several printing plates with
mutually offset codings or coding parts are used according to the desired rep-
etition rate.
[0028] The value document substrate is preferably a printed or unprinted cotton
fiber paper, cotton/synthetic fiber paper, a cellulosic paper or a coated, print-
ed or unprinted plastic film. A laminated multilayer substrate can also be
used. The material of the substrate is not essential to the invention, provided
that it only allows incorporation or application of the particular feature sub-
stances required.
[0029] The inventive value documents are preferably bank notes, shares, credit
cards, badge or identity cards, passports of any type, visas, vouchers, etc.

[0030] The second and/or fourth feature substance is advantageously printed on the
value document substrate. For this purpose it is possible to use for example a
gravure, screen, letterpress, flexographic, ink-jet, digital, transfer or offset
printing process. The printing inks used for this purpose can be transparent
or contain additional coloring pigments which must not impair detection of
the feature substances. In the case of the luminescent substances, they prefer-
ably have transparent areas in the excitation range and viewed emission
range of the luminescent substances.
[0031] In the case of designs in which the value document has a paper substrate, the
second feature substance can preferably also be already applied to the moist
paper web, in particular sprayed on, in the form of the coding during paper-
making. For this purpose, the second feature substance is for example passed
onto the paper web surface in a suspension as a laminar jet at low jet pres-
sure at a time when the paper web is still moist but already sufficiently solid-
ified. The low jet pressure prevents the fiber structure of the paper web from
changing upon application of the suspension. The place of application can
then not be recognized by the naked eye on the finished paper either in re-
flected light or in transmitted light. Further possibilities and details of the ap-
plication of the feature substance to a moist paper web are described in the
print EP 1 253 241 A2, whose disclosure is included in the present applica-
tion in this respect.
[0032] Obviously, further feature substances can be applied, or incorporated into the
substrate, e.g. to further increase the falsification security or to include fur-
ther user groups.
[0033] In a method for checking or processing an above-described value document,
the authenticity of the value document is checked and a value recognition of
the document carried out by using at least one characteristic property of the
first or second feature substance for checking the authenticity of the value
document, and the coding formed by the second feature substance for value
recognition of the value document. The authenticity of the value document is

preferably determined by different user groups using different feature sub-
stances. This means that if the user belongs to a first user group, the authen-
ticity of the document is determined using the first feature substance. If the
user belongs to a second user group, said user has at its disposal at least one
characteristic property of the second feature substance for the authenticity
check.
[0034] Both user groups carry out the value recognition using the coding formed by
the second feature substance, however.
[0035] If the value document is provided with a third feature substance, the check or
processing by a user of the first user group can be done by using at least one
characteristic property of the first and/or third feature substance for checking
the authenticity of the value document. For example, some of the users from
the first user group can use the first feature substance for the authenticity
check, and others the third feature substance.
[0036] In a preferred embodiment of the invention, the presence of a first and/or
third feature substance indicates the series or the particular existing upgrade
e.g. of a bank-note issue. For example, only the first feature substance can be
present in an originally issued currency, and the first and third feature sub-
stances in the upgrade of the currency. After a certain transition period it is
conceivable to use only the third feature substance.
[0037] If the second feature substance is formed by a luminescent substance, the
value recognition is preferably done by both user groups by irradiating the
second feature substance with radiation from its excitation range, determin-
ing the emission at at least one wavelength from the emission range of the
second feature substance, and carrying out the value recognition on the basis
of the measured emission. The second user group can also use the emission
behavior for the authenticity check of the document.
[0038] Preferably, the second feature substance is thereby irradiated with visible
and/or infrared radiation and its emission determined in the infrared spectral

range. The irradiation is expediently effected with a light-emitting diode or
laser diode.
[0039] The described methods involve the advantage that both user groups can carry
out not only the authenticity check but also a value recognition on the docu-
ment without any great additional effort. A further advantage is that the users
of the first and second user groups can use, for evaluation, different combi-
nations of the feature substances or the coding formed thereby. Therefore, an
analysis of an apparatus for authenticity detection of the second user group,
for example, gives no indication of the procedure in the authenticity check of
the first user group, since said detection device does not interrogate any of
the properties of the first or third feature substance.
[0040] Further embodiments and advantages of the invention wil be explained
hereinafter with reference to the accompanying drawings. For clarity's sake, the
representation in the figures is not true to scale or to proportion.
[0041] The figures are described as follows:
Fig. 1 a schematic representation of a bank note according to one embodi-
ment of the invention,

Fig. 2 a section through the bank note of Fig. 1 along the line II-II, and
Figs. 3 and 4 sections of a bank note according to further embodiments of the inven-
tion.
[0042] The invention will now be explained by the example of a bank note. First,
Figs. 1 and 2 show schematic representations of a bank note 10 which is
equipped with four different feature substances and permits a check of au-
thenticity and a value recognition by different user groups. Fig. 1 shows the
bank note 10 in a plan view and Fig. 2 a cross section along the line II-II of
Fig. 1.
[0043] As seen best in Fig. 2, two of the feature substances, namely the first feature
substance 14 and the third feature substance 18, are distributed in the form of

particles uniformly within the volume of the paper substrate 12 of the bank
note 10. The particles of the first and third feature substances 14, 18 can be
added to the paper pulp or fibrous pulp before sheet formation or be incorpo-
rated into the fibrous matrix only after sheet formation.
[0044] In this embodiment, the first feature substance 14 is formed by a luminescent
substance based on a rare earth metal doped host lattice and emitting after
excitation in the infrared spectral range in the wavelength range around 1.5
µm. The third feature substance 18 is formed by a mixture of different lumi-
nescent substances which, after excitation, emits radiation with a complex
and difficult-to-imitate spectral distribution.
[0045] A second feature substance 16 is admixed to a printing ink and printed to-
gether therewith in the form of a coding 22 on the front of the bank note 10.
In the embodiment, the coding 22 is a bar code in which the denomination
and the currency of the bank note 10 is stored in encrypted form.
[0046] The second feature substance 16 is likewise formed by a luminescent sub-
stance which is selected specifically so that its luminescence can be easily
excited and detected with commercially available detectors.
[0047] The authenticity check and the value recognition can now be carried out by
two different user groups using different combinations of the three feature
substances 14, 16 and 18 or the coding 22. The bank note 10 of the embodi-
ment is designed for a first user group with high security requirements and a
second user group with comparatively low security requirements.
[0048] The second user group can involve for example simple machines taking bank
notes in parking lots, or vending machines. For this use it is particularly ex-
pedient to employ inexpensive detection apparatuses for the authenticity
check and value recognition.
[0049] A user of the second user group checks the authenticity of a bank note 10 by
irradiating the bank note with light from the excitation range of the second
feature substance 16 and detecting a corresponding luminescence signal. If a

correct luminescence signal is received, the bank note is rated as authentic by
the user. The presence of the correct luminescence signal suffices, no spatial-
ly resolved evaluation or analysis of the emission spectrum being required
for the authenticity check. Due to the choice of the luminescent substance 16
this detection can be effected very simply and with commercially available,
inexpensive detectors. If the bank note is recognized as authentic, its value
can be taken from the bar code 22 if the coding scheme is known. The au-
thenticity check and the value recognition can of course also be carried out in
one step.
[0050] The first user group with its higher security requirements can comprise for
example banks, where the authenticity of the bank notes is checked with
high-quality and elaborate detectors. The first feature substance 14 with its
difficult-to-detect infrared emission at 1.5 urn serves as an authenticity mark
for this user group. Alternatively or additionally, the third feature substance
18 with its complex spectral emission can be used for the authenticity check.
The authenticity check is preferably based not only on detection of the cor-
rect luminescence emission, but also on an in-depth analysis of the emission
spectrum, whereby half-widths and/or luminescence peak intervals and/or
decay times, etc., are rated.
[0051] The value recognition of the bank note is carried out both by a user of the
first user group and by the users of the second user group with the help of the
luminescent second feature substance 16. The high-quality authenticity check
by the first or third feature substance 14 or 18 at the same time guarantees
the first user group the correctness of the value of the bank note read with
the help of the luminescent substance 16.
[0052] In the concrete embodiment of Figs. 1 and 2, a fourth feature substance 20 is
printed, in addition to the stated feature substances, on the bank note 10 in
the form of a further coding 24. The further coding 24 can generally be like-
wise formed as a bar code or, as indicated in Fig. 1, be an alphanumeric
character string. In the embodiment, the fourth feature substance is formed

by an infrared absorber which absorbs in the range of around 1.5 µm but is
transparent in the visible spectral range and in the near infrared up to about
0.8 µm The printed coding 24 can thus not be recognized by the naked eye
or by commercially available silicon-based infrared detectors.
[0053] Fig. 3 shows a further embodiment in which the second feature substance 16
is already sprayed onto the still moist paper web in the form of the bar code
22 during papermaking. In the finished bank note the coding 22 is then locat-
ed below the uppermost size layer of the paper substrate 12.
[0054] The fourth feature substance 20 is formed in this bank note by optically vari-
able pigments which are admixed to a printing ink and printed therewith on
the bank note substrate 12. The fourth feature substance can also be a further
luminescent substance, however, which is admixed to a optically variable
ink. The coding 24 then conveys to the viewer different color effects at dif-
ferent viewing angles.
[0055] In the embodiment shown in Fig. 4, the paper substrate 12 has two paper lay-
ers 26 and 28 that are initially produced separately and interconnected in the
course of papermaking. The first feature substance 14 is incorporated into
the paper layer 26, and the third feature substance 18 into the paper layer 28.
It is also possible for one of the paper layers, for example the layer 26, to
contain both feature substances, while the other paper layer is not provided
with a feature substance.

Claims
1. A value document, in particular bank note, having a value document substrate
and at least two different feature substances for checking the value document,
characterized in that the first feature substance is incorporated into the volume of
the substrate of the value document, and the second feature substance is applied
to the value document substrate in the form of a coding.

2. The value document according to claim 1,characterized in that the first feature
substance is distributed substantially uniformly within the volume of the value
document substrate.
3. The value document according to claim 1 or 2, characterized in that a third fea-
ture substance different from the first feature substance is incorporated into the
volume of the substrate of the value document.
4. The value document according to claim 3, characterized in that the third feature
substance is distributed substantially uniformly within the volume of the value
document substrate.
5. The value document according to at least one of claims 1 to 4, characterized in
that the first and/or third feature substance is formed by a luminescent substance
or a mixture of luminescent substances.
6. The value document according to at least one of claims 1 to 5, characterized in
that the second feature substance is formed by a luminescent substance or a mix-
ture of luminescent substances.
7. The value document according to at least one of claims 1 to 6, characterized in
that at least one of the feature substances is formed on the basis of a host lattice
doped with rare earth elements.
8. The value document according to at least one of claims 1 to 7, characterized in
that a fourth feature substance is applied to the value document, preferably print-
ed thereon, which is different from the second feature substance.

9. The value document according to claim 8, characterized in that the fourth feature
substance is formed by a feature substance absorbent in the infrared spectral
range, preferably in that the fourth feature substance absorbs significantly in the
spectral range above about 1.2 µm, especially preferably in the spectral range
from about 1.5 µm to 2.2 µm.
10. The value document according to claim 9, characterized in that the fourth feature
substance is substantially colorless or has only weak inherent color in the visible
spectral range, preferably in that the fourth feature substance does not yet have
significant absorption even in the near infrared up to a wavelength of about
0.8 µm.
11. The value document according to claim 8, characterized in that the fourth feature
substance is formed by a magnetic substance, an electroconductive substance or a
substance with an optically variable effect.
12. The value document according to at least one of claims 8 to 1.1, characterized in
that the fourth feature substance is printed on the value document in the form of a
coding.
13. The value document according to at least one of claims 1 to 12, characterized in
that at least one coding extends over a predominant part of a surface of the value
document, in particular over the substantially total surface of the value document.
14. The value document according to at least one of claims 1 to 13, characterized in
that at least one coding, in particular the coding formed by the second marking
substance, is a bar code.
15. The value document according to at least one of claims 1 to 14, characterized in
that at least one coding represents information about the value document, the in-
formation being present in encrypted or unencrypted form.
16. The value document according to at least one of claims 1 to 15, characterized in
that the value document substrate comprises a printed or unprinted cotton fiber
paper.

17. The value document according to at least one of claims 1 to 16, characterized in

that the value document substrate comprises a coated or printed or unprinted plas-
tic film.
18. The value document according to at least one of claims 1 to 17, characterized in
that the second feature substance is printed on the value document substrate.
19. The value document according to at least one of claims 1 to 17, characterized in
that the second feature substance is applied to the moist paper web, in particular
sprayed on, in the form of the coding during papermaking.
20. A method for producing a value document according to any of claims 1 to 19,
characterized in that the first feature substance is incorporated into the volume of
the value document substrate, and the second feature substance is applied to the
value document substrate in the form of a coding.
21. The production method according to claim 20, characterized in that the second
feature substance is printed on the value document substrate.
22. The production method according to claim 20, wherein the value document sub-
strate is formed by a printed or unprinted cotton paper, characterized in that the
second feature substance is sprayed onto the moist paper web during papermak-
ing.
23. The production method according to at least one of claims 20 to 22, characterized
in that a third feature substance is incorporated into the value document substrate.
24. The production method according to at least one of claims 20 to 23, characterized
in that a fourth feature substance is applied to the value document substrate, in
particular printed thereon.
25. A method for checking or processing a value document according to any of
claims 1 to 19, wherein the authenticity of the value document is checked and a
value recognition of the document carried out by using at least one characteristic
property of the first and/or second feature substance for checking the authenticity

of the value document, and the coding formed by the second feature substance for
value recognition, currency recognition, etc., of the value document.
26. The method according to claim 25, characterized in that at least one characteristic
property of the first feature substance is used for checking the authenticity of the
value document by a user of a first user group.
27. The method according to claim 25 or 26, characterized in that at least one charac-
teristic property of the second feature substance is used for checking the authen-
ticity of the value document by a user of a second user group.
28. The method according to at least one of claims 25 to 27, characterized in that at
least one characteristic property of the first and/or third feature substance is used
for checking the authenticity of the value document.
29. The method according to any of claims 25 to 28, characterized in that the second
feature substance is formed by a luminescent substance, and the second feature
substance is irradiated with radiation from its excitation range, the emission is de-
termined at at least one wavelength from the emission range of the second feature
substance, and the check of authenticity and/or the value recognition is carried
out on the basis of the determined emission.
30. The method according to claim 29, characterized in that the second feature sub-
stance is irradiated with visible and/or infrared radiation, and its emission is de-
termined in the infrared spectral range.
31. The method according to claim 29 or 30, characterized in that the irradiation is
performed with a light-emitting diode or laser diode.

This invention relates to a value document, in particular a bank note, having a
value document substrate and at least two different feature substances for checking the
value document. According to the invention, a first feature substance is incorporated
into the volume of the substrate of the value document, and a second feature substance
applied to the value document substrate in the form of a coding.

Documents:

01014-kolnp-2006 abstract.pdf

01014-kolnp-2006 assignment.pdf

01014-kolnp-2006 claims.pdf

01014-kolnp-2006 correspondence others.pdf

01014-kolnp-2006 description complete.pdf

01014-kolnp-2006 drawings.pdf

01014-kolnp-2006 form-1.pdf

01014-kolnp-2006 form-3.pdf

01014-kolnp-2006 form-5.pdf

01014-kolnp-2006 international publication.pdf

01014-kolnp-2006 international search report.pdf

01014-kolnp-2006 pct form.pdf

01014-kolnp-2006 priority document.pdf

01014-kolnp-2006-abstract-1.1.pdf

01014-kolnp-2006-assignment-1.1.pdf

01014-kolnp-2006-claims-1.1.pdf

01014-kolnp-2006-correspondence others-1.1.pdf

01014-kolnp-2006-description(complete)-1.1.pdf

01014-kolnp-2006-priority document-1.1.pdf

1014-KOLNP-2003-FORM-27.pdf

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Patent Number 246525
Indian Patent Application Number 1014/KOLNP/2006
PG Journal Number 09/2011
Publication Date 04-Mar-2011
Grant Date 02-Mar-2011
Date of Filing 20-Apr-2006
Name of Patentee GIESECKE & DEVRIENT GMBH
Applicant Address PRINZREGENTENSTRASSE 159, 81677 MUNCHEN
Inventors:
# Inventor's Name Inventor's Address
1 SCHWENK, GERHARD PRIMELSTRASSE 106, 82178 PUCHHEIM
2 STENZEL, GERHARD STEPHAN-LOCHNER-STRASSE 11, 80686 MUNCHEN
3 KAULE, WITTICH LINDACHER WEG 13, 82275 EMMERING
4 GIERING, THOMAS AM KLEINFIELD 12, 85614 KIRCHSEEON
PCT International Classification Number h01j7/18
PCT International Application Number PCT/EP2004/011130
PCT International Filing date 2004-10-05
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 103 46 633.9 2003-10-08 Germany