Title:
【発明の名称】インフオメーシヨンデバイス
Document Type and Number:
Japanese Patent JP2677599
Kind Code:
B2
Abstract:
An information device comprising a substrate having applied thereto: (1) an agent which absorbs electromagnetic radiation in the infra-red to ultra-violet region of the spectrum, said agent being capable of easy removal from the substrate by physical means, and (2) a second agent which is capable of increasing the fixation of the first agent to the substrate, said second agent being applied to the substrate in a localised manner to form an invisible image which becomes detectable when the substrate is subjected to a treatment capable of selectively removing the first agent from those parts of the substrate to which the second agent has not been applied. t
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Inventors:
Divided Greenwood
Application Number:
JP11269488A
Publication Date:
November 17, 1997
Filing Date:
May 11, 1988
Export Citation:
Assignee:
IMPERIAL CHEMICAL INDUSTRIES PLC
International Classes:
B41M3/00; B41M5/00; B42D15/10; C09D11/00; C09D11/02; B41M3/14; D06P5/20; D06P5/30; D06Q1/00; D06Q1/02; D06Q1/04; D21H21/46; G06K19/06; (IPC1-7): B41M3/14; B41M5/00; B42D15/10; C09D11/00; C09D11/02
Attorney, Agent or Firm:
Toshio Yano