Apparatus for manufacturing optical information recording medium

Details Apparatus for manufacturing optical information recording medium Apparatus for manufacturing optical information recording medium

1989-04-26

1990-03-13

Hoag, Willard

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

264 22, 425 90, 425150, 4251744, 4254051, 425810, B29C 4308, B29C 4358

Patent

active

049079565

ABSTRACT:
A disk substrate is supported by a support base formed on a center pin which is vertically movable on a selective basis, a table is set below the disk substrate, and a stamper is positioned on the table by means of a guide ring or the like. A ring-shaped portion of resin which is cured upon radiation of ultraviolet rays is set on the stamper. The center pin is then caused to descend by means of a drive mechanism, to a first position, at which position the disk substrate is on the point of contact with the resin. Then, the disk substrate is caused to descend intermittently in units of very small amounts, to a second position, at which position the entire periphery of the ring-like resin is brought into contact with the disk substrate. From the second position, the disk substrate is made to descend by means of the a load of a weight while, at the same time, the ring-shaped portion of resin is drawn by vacuum suction from its central position, thereby forming on the surface of the stamper a resin layer on which a record, formed on the stamper, is imprinted.

REFERENCES:
patent: 4449916 (1984-05-01), Ito et al.
patent: 4670077 (1987-06-01), Peeters
patent: 4814119 (1989-03-01), Scholtz

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