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Title:
ANTI-FORGERY SHEET
Document Type and Number:
Japanese Patent JP2002321476
Kind Code:
A
Abstract:

To provide an anti-forgery sheet for merchandise coupons, stock certificates and various cards whose truth can be easily and surely judged and which are hardly forged.

The merchandise coupon 1 made of the anti-forgery sheet is provided with a micro-through-hole with the same shape as that of a transmitting part through which a laser light passes and whose shape is hardly distinguished with naked eyes by passing the laser light through the transmitting part, for example, a dog shape, selected from a plurality of transmitting parts consisting of arbitrary complicated shapes such as animal-like shapes and star- like shapes except simple shapes such as rounds, ellipsoids and squares formed on the peripheral edge of a rotating stencil.


Inventors:
MARUYAMA TORU
SUZUKI HIDEKI
Application Number:
JP2001129123A
Publication Date:
November 05, 2002
Filing Date:
April 26, 2001
Export Citation:
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Assignee:
TOPPAN FORMS CO LTD
International Classes:
B42D15/10; (IPC1-7): B42D15/10
Attorney, Agent or Firm:
Taichi Chiba



 
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