Method for producing an optical information recording disk

Details Method for producing an optical information recording disk Method for producing an optical information recording disk

1987-10-13

1989-10-03

Wityshyn, Michael

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

1562755, 1563073, 2642711, 2643281, 3461351, 346137, 360135, 369282, 369286, 369290, B29C 4514, B29C 6508, G11B 724

Patent

active

048714046

ABSTRACT:
A method for manufacturing an optical information recording disk having a reduced eccentricity between the center hole of the disk and the recorded track. A transparent circular substrate is provided having a large circular hole. A metal lamination disk member is formed having an outer diameter larger than the inner diameter of the hole in the substrate and an inner diameter smaller than the inner diameter of the hole in the substrate. The metal lamination disk member is placed on the substrate with an adhesive and positioned so that the center hole in the lamination member is concentric relative to the substrate, whereupon the adhesive is hardened. A molded circular plate is then concentrically mounted having a transfer surface on a main surface of the circular substrate through a setting resin in a liquid phase, which is then hardened.

REFERENCES:
patent: 1821916 (1931-09-01), Acheson et al.
patent: 3430966 (1969-03-01), Gregg
patent: 4138765 (1979-02-01), Yamazaki et al.
patent: 4470137 (1984-09-01), Tago
patent: 4549922 (1985-10-01), Oishi et al.
patent: 4569865 (1986-02-01), Placek
patent: 4660119 (1987-04-01), Kato et al.
patent: 4710913 (1987-12-01), Matsushima et al.

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