Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
CARD AND METHOD OF CERTIFICATION THEREOF
Document Type and Number:
Japanese Patent JPH0640189
Kind Code:
A
Abstract:

PURPOSE: To obtain a card which can be certified by an unattended card treating machine, and Is difficult of forgery and counterfeit, and provide a method of certification thereof.

CONSTITUTION: The card Is composed of being laminated, at least on a part of the card foundation material 1, with at least an infrared ray absorptive or reflective ink print 5, a concealing layer 3 which substantially permits an infrared ray and not permit a visible ray to be passed therethrough, and a Lippman type hologram layer 4 In the order from the card foundation material 1 side, wherein certification is performed in a manner lightning an infrared ray via the hologram layer 4 and concealing layer 3, and reflecting it by the surface of the card foundation material 1 and print 5, and detecting light coming out again in passing through the concealing layer 3 and hologram layer 4 by an infrared ray detector 6. Furthermore, it is conducted through the identification of the card by reading out patterns such as marks, characters, code recorded by the print 5.


Inventors:
TAWARA SHIGEHIKO
Application Number:
JP19977092A
Publication Date:
February 15, 1994
Filing Date:
July 27, 1992
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
DAINIPPON PRINTING CO LTD
International Classes:
B42D15/10; G03H1/02; G06K17/00; G06K19/06; G06K19/10; (IPC1-7): B42D15/10; G03H1/02; G06K17/00; G06K19/06; G06K19/10
Attorney, Agent or Firm:
Hiroshi Nirazawa (7 outside)