Optical recording medium producing method, and optical...

Details Optical recording medium producing method, and optical... Optical recording medium producing method, and optical...

2003-09-18

2009-12-01

Wyrozebski, Kat (Department: 1791)

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Light polarizing article or holographic article

C264S001380, C264S001700, C264S001900

Reexamination Certificate

active

07625506

ABSTRACT:
When manufacturing an optical recording medium by forming a resin layer on a surface of a substrate and then forming a center hole that passes through the substrate and the resin layer, a method of manufacturing an optical recording medium according to the present invention forms the center hole by forming, in the resin layer, a circular cut with a larger diameter than the center hole so as to surround a formation position of the center hole and then pressing in a punching blade for forming the center hole from a rear surface side of the substrate. By doing so, detachment of the resin layer and the production of burrs at or near the center hole can be avoided while reducing the manufacturing cost.

REFERENCES:
patent: 7047859 (2006-05-01), Ide et al.
patent: 7096770 (2006-08-01), Ide et al.
patent: 7270527 (2007-09-01), Ide et al.
patent: 2004/0149111 (2004-08-01), Ide et al.
patent: 2005/0201264 (2005-09-01), Ushida et al.
patent: 58-045637 (1983-03-01), None
patent: 61-175946 (1986-08-01), None
patent: 63-203308 (1988-08-01), None
patent: 5-337899 (1993-12-01), None
patent: 10-040584 (1998-02-01), None
patent: 10-289489 (1998-10-01), None
patent: 2002-298453 (2002-11-01), None
patent: 2004-39149 (2004-02-01), None
English Language Abstract of JP 10-289489.
English Language Abstract of JP 10-040584.
English Language Abstract of JP 63-203308.
English Language Abstract of JP 61-175946.
English Language Abstract of JP 58-045637.
English Language Abstract of JP 5-337899.
English Language Abstract of JP 2002-298453.
U.S. Appl. No. 10/762,245 to Ide et al., filed Jan. 23, 2004.
U.S. Appl. No. 10/829,266 to Koyama et al., filed Apr. 22, 2004.
English language Abstract of JP 2004-39149, Feb. 5, 2004.

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