Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Utilizing plasma – electric – electromagnetic – particulate – or...
Patent
1991-11-14
1994-01-25
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, 264106, 264171, 264 22, 264284, 4251744, 425327, 425363, B29C 3510
Patent
active
052813711
ABSTRACT:
A method for forming a substrate sheet for optical recording media having a preformat on the surface is disclosed. This method has the steps of extruding a melted resin to form a melted resin sheet, pressing the melted resin sheet between a mirror roll and a resin roll prior to the curing of the melted resin sheet, thereby forming a resin sheet, the resin roll being disposed in the face of the mirror roll and being covered on the peripheral surface thereof with a resin, and forming a photocurable resin composition layer on the surface of the resin sheet with which the resin roll has come in contact, and forming the preformat on the photocurable resin composition layer.
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Kanome Osamu
Santoh Tsuyoshi
Tamura Miki
Canon Kabushiki Kaisha
Thurlow Jeffery
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