Process and apparatus for manufacturing substrate sheet for opti

Details Process and apparatus for manufacturing substrate sheet for opti Process and apparatus for manufacturing substrate sheet for opti

1993-11-19

1996-06-18

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Light polarizing article or holographic article

264 16, 264 39, 2642102, 264284, 425230, 425327, 425367, 425385, 425810, B29D 1700, B29C 4324

Patent

active

055274978

ABSTRACT:
Optical recording mediums are prepared by extrusion molding. In the extrusion molding, a thermoplastic resin heated to a given temperature is pressed between a roll stamper and a roll opposite thereto. A gap between the roll stamper and the roll is precisely defined by belt members fixed on each side of the roll where the roll does not come into touch with the thermoplastic resin. The joints of the respective belt members are formed at positions different from each other on the periphery of the roll. Alternatively the gap may be defined by cutting the roll substrate at a part on which the stamper member is fixed, or by interposing endless belts with a given thickness between the roll stamper and the roll. The stamper member provided on the roll stamper is reduced in stress, and has a surface precision of 10 .mu.m or less.

REFERENCES:
patent: 3999914 (1976-12-01), Breher et al.
patent: 4482511 (1984-11-01), Komatsubara
patent: 4871601 (1989-10-01), Miura et al.
patent: 4958558 (1990-09-01), Harreither
patent: 4965153 (1990-10-01), Imataki et al.
patent: 5073101 (1991-12-01), Imataki et al.
patent: 5147592 (1992-09-01), Sato et al.
patent: 5147763 (1992-09-01), Kamitakahara
patent: 5169583 (1992-12-01), Moriguchi et al.
patent: 5248584 (1993-09-01), Miura et al.
patent: 5281371 (1994-01-01), Tamura et al.
Patent Abstracts of Japan, vol. 13, No. 135(P-851), Dec. 9, 1988.

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