Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Light polarizing article or holographic article
Patent
1991-09-26
1994-11-29
Vargot, Mathieu
Plastic and nonmetallic article shaping or treating: processes
Optical article shaping or treating
Light polarizing article or holographic article
264107, 2642102, 264284, 425327, 425363, 425385, B29C 5904, B29D 1100
Patent
active
053687892
ABSTRACT:
A method for molding a substrate sheet for an optical recording medium by transferring a preformat pattern from a molding roll to a resin sheet molded by melting and extruding a resin. The molding roll has a roll base, a stamper detachably fixed on the peripheral surface of the roll base, and a resin layer interposed between the roll base and the stamper.
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Hayashi Hisanori
Kamitakahara Hirofumi
Kanome Osamu
Sato Tetsuya
Yoshino Hitoshi
Canon Kabushiki Kaisha
Vargot Mathieu
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