Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Utilizing plasma – electric – electromagnetic – particulate – or...
Patent
1992-11-27
1994-06-14
Thurlow, Jeffery
Plastic and nonmetallic article shaping or treating: processes
Optical article shaping or treating
Utilizing plasma, electric, electromagnetic, particulate, or...
264 14, 264 16, 264 406, 264556, 264106, 264216, 264237, 264284, 425143, 4251748E, 4253261, 425327, 425363, 425385, B29C 5904
Patent
active
053207874
ABSTRACT:
An apparatus and method for manufacturing a substrate sheet for information recording mediums having a roll stamper consisting of a flexible stamper having a pattern corresponding to a preformat for an information recording medium, the flexible stamper being fixed along the corresponding periphery of a roll substrate. A roll is placed opposite the roll stamper. A molten-resin sheet wider than the flexible stamper member is formed. The apparatus has means for bringing the edges of a resin sheet into contact with the roll substrate before releasing the resin sheet from the roll stamper. The temperature is controlled, so that a temperature difference on the surfaces of edges of a resin sheet and a preformat pattern transfer area of the resin sheet is kept within 30.degree. C. when the resin sheet is separated from the roll stamper after the molten-resin sheet has been pressed between the roll stamper and roll.
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Database WPIL, Week 9046, Derwent Publications Ltd., London GB; AN 90-346053 & JP-A2 251 422 (Canon KK) *abstract*.
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Hayashi Hisanori
Kamitakahara Hirofumi
Kanome Osamu
Sato Tetsuya
Yoshino Hitoshi
Canon Kabushiki Kaisha
Thurlow Jeffery
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