JPH0131511Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a certificate, and more particularly to a certificate in which the seal imprinted on the certificate is made of ink pad containing a fluorescent substance to prevent falsification and forgery.

In securities, bankbooks, contracts, and other instruments that are executed or exercised by stamping a seal, transparent film labels have traditionally been pasted to protect the seal space and prevent tampering.

Regarding the above-mentioned certificate, it is necessary to prevent counterfeiting of seals because even a person who is not the original party can exercise the certificate by obtaining a seal that gives the same seal impression as the stamp that was affixed.

However, with the conventional seal field protection method, the seal impression is visible to everyone, so it is possible to produce identical seals, and it is not difficult to tamper with the seal impression by peeling off the transparent film label. .

The purpose of the present invention is to solve the above-mentioned problems and provide a certificate whose seal imprint is not visible under normal conditions and which is difficult to falsify or forge.

That is, a stamp concealing printed area made of a solid or background pattern is provided in the stamp field of the certificate base material, and a stamp pad containing a fluorescent substance that emits light when irradiated with ultraviolet light is placed on the stamp concealing printed area. The gist is a certificate with a seal imprinted on it.

Embodiments of the present invention will be described below with reference to the drawings.

Figure 1 is a plan view showing the certificate of the present invention;
2 shows a state in which the certificate shown in FIG. 1 has been irradiated with ultraviolet rays, and FIG. 3 is a cross-sectional view taken along the line A--A in FIG. 1.

In the certificate 1 of the present invention, a seal concealing printing section 7 is provided in a seal space 5 of a certificate base material 3 made of paper, synthetic paper, plastic film, metal, or other materials. A seal impression 9 is provided on the top. The seal imprint hiding printing part 7 is made of commonly used printing ink and is intended to make the seal imprint 9 not easily visible, so it is preferable to use an irregular, intricate ground pattern or the like. . Further, if it is difficult to identify the seal imprint 9, the background pattern may be provided on the entire surface or a part of the seal area 5. Furthermore, the seal imprint concealment printing portion 7 may be a solid pattern instead of a background pattern. Although the color of the seal imprint concealment printing part 7 may be different from the color of the seal imprint 9, the effect of concealing the seal imprint 9 is further increased by using similar colors.

The ink pad constituting the stamp impression 9 is made of commonly used substances such as pine tar, castor oil, and red pigment (in the case of vermilion ink pad), as well as a fluorescent substance added thereto. As the fluorescent substance, organic fluorescent dyes, organic fluorescent pigments, inorganic fluorescent pigments, etc. can be used.

Further, as shown in FIG. 4, a transparent film 11 through which ultraviolet light is well transmitted may be laminated via an adhesive 13 so as to cover the seal impression 9. In this case, the transparent film 11 is for protecting the seal impression 9.

Furthermore, in order to prevent the imprint 9 of the certificate 1 from being forged, a notch is provided at the peripheral edge of the transparent film 11 (not shown) so that the transparent film 11 will be torn when an attempt is made to peel it off, and the transparent film 11 will be removed again. It is also possible to use 11.

Certificate 1 of the present invention structured as above is:
Under normal white light, the seal impression 9 cannot be seen, but when irradiated with black light, that is, light consisting mainly of ultraviolet light that cuts visible light, the seal impression 9 contains fluorescent material, and on the other hand, Since the printing layer 7 for seal imprint concealment does not contain a fluorescent substance, the second
As shown in the figure, only the seal impression 9 increases in brightness, and the seal impression 9 can be easily
can be seen.

As described above, the certificate of the present invention has a seal imprint made of ink pad containing a fluorescent material above the printing area for concealing the seal impression in the seal area, so the seal imprint can only be seen when irradiated with a black light. The seal cannot be seen under normal white light, so
Even if a third party obtains the certificate, the seal cannot be forged, and therefore, unauthorized use of the certificate or falsification or forgery of the certificate can be prevented.

[Brief explanation of the drawing]

The figure shows an example of the certificate according to the present invention.
Fig. 1 is a partially cutaway plan view of the certificate under normal white light, Fig. 2 is a partially cutaway plan view of the certificate under black light irradiation, and Fig. 3 is a partially cutaway plan view of the certificate under normal white light. FIG. 4 is a sectional view showing another embodiment of the certificate. 1...Certificate, 3...Certificate base material, 5...Seal area, 7...Seal imprint concealment printing section, 9...Seal imprint, 11
...transparent film, 13...adhesive.

Claims (1)

[Scope of utility model registration request] A seal impression concealing printing section made of a solid or background pattern is provided in the stamp area of the certificate base material, and a seal impression consisting of an ink pad containing a fluorescent substance that emits light when irradiated with ultraviolet light is placed on the seal impression concealment printing section. A certificate that is established.