Process for preparation of optical disk substrate

Details Process for preparation of optical disk substrate Process for preparation of optical disk substrate

1987-12-21

1988-11-29

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Utilizing plasma, electric, electromagnetic, particulate, or...

264 14, 264 22, 264107, B29C 3508, B29C 4320, B29D 1100

Patent

active

047880155

ABSTRACT:
A process for the preparation of a substrate for an optical disk having spiral or concentric guide grooves formed on the surface thereof, which comprises the steps of casting a radiation- and heat-curable liquid resin mixture between a duplicating mold and a transport substrate, curing the liquid resin mixture by irradiating it with radiation from the side of the transparent substrate, peeling the molded body from the duplicating mold and heat-polymerizing the obtained molded body by heating, wherein a mixture comprising a liquid resin having a terminal acrylic group and/or a terminal methacrylic group and an organic peroxide is used as the radiation- and heat-curable liquid resin mixture.

REFERENCES:
patent: 4477328 (1984-10-01), Broeksema et al.
patent: 4650845 (1987-03-01), Hegel
patent: 4734477 (1988-03-01), Inoue et al.

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