Method of manufacturing an optical disc and a placing platform t

Details Method of manufacturing an optical disc and a placing platform t Method of manufacturing an optical disc and a placing platform t

1996-05-17

1998-04-28

Aftergut, Jeff H.

Coating processes

Optical element produced

118 52, 156 74578, 4272071, 427240, 427296, G11B 726

Patent

active

057441936

ABSTRACT:
A method of manufacturing an optical disc for uniformly spreading an adhesive at a region where the first and second resin substrates are bonded to each other at a portion close to central holes thereof, and a placing platform to be used by the same manufacturing method. The method of manufacturing the optical disc comprises coating the adhesive onto the first resin substrate, placing the second resin substrate on the first resin substrates, then spreading the adhesive while the first and second resin substrates are rotated at high speed, thereafter curing the adhesive thereby bonding the first and second resin substrates, wherein the adhesive is sucked from central holes of the first and second resin substrates so as to facilitate spreading of the adhesive at the central holes thereof. The placing platform of the optical disc to be used by the above method has a boss provided with suction means.

REFERENCES:
patent: 4877475 (1989-10-01), Uchida et al.
patent: 4995799 (1991-02-01), Hayashi et al.
patent: 5069155 (1991-12-01), Kunze-Concewitz et al.

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