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Patent Searching and Data


Title:
PRODUCTION OF CARD TYPE STORAGE MEDIUM
Document Type and Number:
Japanese Patent JPH04125828
Kind Code:
A
Abstract:

PURPOSE: To efficiently produce a medium which has high hardness on the surface and has flexibility by superposing a transparent sheet-shaped resin layer of a photosetting type on a transparent substrate and photosetting this layer, thereby providing a hard cost layer.

CONSTITUTION: A recording layer 4 is formed on the pregroove parts 1a of the transparent substrate 1 having the pregroove parts 1a on the surface and a back substrate 5 is stuck via an adhesive layer 6 onto this recording layer 4 to obtain the information storage medium. The transparent sheet-shaped resin layer 7 of a photosetting type is then superposed on the opposite side of the pregroove parts 1a of the transparent substrate 1 and is irradiated with light 8. The sheet-shaped resin layer 7 is photoset in this way and is tightly adhered to the transparent substrate 1, by which the hard coat layer 2 is formed. The card type information storage medium having the high hardness on the surface and having the flexibility is thus obtd.


Inventors:
NAGANO KAZUMI
OGAWA YOSHIHIRO
Application Number:
JP24371090A
Publication Date:
April 27, 1992
Filing Date:
September 17, 1990
Export Citation:
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Assignee:
CANON KK
International Classes:
G11B7/26; (IPC1-7): G11B7/26
Domestic Patent References:
JPS62141658A1987-06-25
JPS62129954A1987-06-12
JPH02185742A1990-07-20
JPH02162547A1990-06-22
Attorney, Agent or Firm:
Tokuhiro Watanabe