LAMINATED COMPOSITE BODY, INFORMATION RECORDING MEDIUM, AND MEMBER FOR IMPARTING COUNTERFEIT PREVENTIVE FUNCTION

Title:

LAMINATED COMPOSITE BODY, INFORMATION RECORDING MEDIUM, AND MEMBER FOR IMPARTING COUNTERFEIT PREVENTIVE FUNCTION

Document Type and Number:

WIPO Patent Application WO/2000/072056

Kind Code:

A1

Abstract:

There is disclosed a laminated composite body (1) comprising an optical layer (2) having light reflectivity and a latent image forming layer (3) containing a polymer liquid crystal material and provided on one major surface of the optical layer (2), wherein the latent image forming layer (3) has at least one aligned part (3a) in an aligned state and at least one nonaligned part (3b) in a nonaligned state, a latent image that cannot be recognized by direct visual observation but can be recognized by visual observation using a polarizing member is formed in the aligned and nonaligned parts (3a, 3b). There are also disclosed an information recording medium having such a latent image forming layer (3) and a member for imparting counterfeit preventive function.

Inventors:

GOCHO SATOSHI (JP)
KIJIMA ATSUSHI (JP)
KUBO AKIRA (JP)
ITO NORIYUKI (JP)
SHINDO NAOAKI (JP)

Application Number:

PCT/JP2000/003292

Publication Date:

November 30, 2000

Filing Date:

May 23, 2000

Export Citation:

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Assignee:

TOPPAN PRINTING CO LTD (JP)
GOCHO SATOSHI (JP)
KIJIMA ATSUSHI (JP)
KUBO AKIRA (JP)
ITO NORIYUKI (JP)
SHINDO NAOAKI (JP)

International Classes:

B41M3/14; B41M5/36; B42D15/00; B44F1/12; G02B5/30; B41M5/40; B41M5/41; B41M5/42; (IPC1-7): G02B5/30; G02B27/28; B41M3/14; B32B7/02; B44F1/12; B42D15/10

Foreign References:

JPH08276659A	1996-10-22
EP0911758A2	1999-04-28
JPH03118198A	1991-05-20
JPH11277957A	1999-10-12
EP0568185A2	1993-11-03
JPH0784219A	1995-03-31
JPH06286369A	1994-10-11
JPH08190335A	1996-07-23
JPH0113412A
JPH0115273A
EP0435029A2	1991-07-03
US4893906A	1990-01-16
JPH0241927U	1990-03-22

Other References: