Method of manufacturing a matrix and a master plate suitable for

Details Method of manufacturing a matrix and a master plate suitable for Method of manufacturing a matrix and a master plate suitable for

1988-11-02

1993-05-25

Levy, Stuart S.

Dynamic information storage or retrieval

Storage medium structure

369100, 369284, 346 76L, G11B 726, G11B 724

Patent

active

052146324

ABSTRACT:
The invention relates to a method of manufacturing a metal matrix suitable for use in the manufacture of optical discs, in which a master plate is used which comprises a recording double layer of a synthetic resin in which each layer comprises a laser light-absorbing dye, the master plate is exposed to modulated laser light in which the laser light in both layers of the recording layer is absorbed and in which as a result of the exposure information bits are formed in the form of bumps having variable longitudinal dimensions and the same width dimensions and the master plate on the side of the recording layer comprises a metal layer which is separated from the master plate, as well as a master plate which is suitable for use in the method described hereinbefore.

REFERENCES:
patent: 4360895 (1982-11-01), Cornet
patent: 4398203 (1983-08-01), Cornet
patent: 4430401 (1984-02-01), Wilkinson
patent: 4719615 (1988-01-01), Feyrer et al.
patent: 4780867 (1988-10-01), Lind et al.
patent: 4825430 (1989-04-01), Halter et al.
patent: 4852075 (1989-07-01), Feyrer et al.
patent: 4950520 (1990-08-01), Imai et al.

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