Title:
METHOD FOR MANUFACTURING OPTICAL CARD
Document Type and Number:
Japanese Patent JP3271020
Kind Code:
B2
Abstract:
PURPOSE: To make it possible to manufacture a low-cost optical card without using a high-cost optical recording material wastefully by using a roughed surface original plate with a pattern in units of an optical recording material part arranged finely.
CONSTITUTION: A roughed surface original plate with a low reflective part having a roughed surface in accordance with an information recording pattern is prepared by arranging finely a pattern of a size equal to the unit of an optical recording material part. The optical recording medium with this information recording pattern formed is used as a surface roughed original plate 15, and a mother mask is duplicated based on the original plate 15 using a die-punching press. Next, the original plate 15 is parted from a transparent base 21 to duplicate a pattern on the base 21 side and thereby form a mother mask 23. After that, the mask 23 is used as a duplication original plate for mass-duplication and a base 101 of duplication resin 31 is duplicated by die-punching. Further, film 100a is peeled off and the base 101 is parted from the mask 23 to duplicate a pattern. Thus a low reflective rate part is formed on the surface of the resin 31 and the resin 31 becomes the base 101 of an optical card.
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Inventors:
Yoshihiro Azuma
Application Number:
JP27341492A
Publication Date:
April 02, 2002
Filing Date:
September 18, 1992
Export Citation:
Assignee:
Dai Nippon Printing Co.,Ltd.
International Classes:
B42D15/10; G06K19/06; G11B7/26; (IPC1-7): B42D15/10; G06K19/06; G11B7/26
Domestic Patent References:
| JP62287449A | ||||
| JP1105791A | ||||
| JP1229439A | ||||
| JP6344336A |
Attorney, Agent or Firm:
Satoshi Kanayama