Master for the duplication of sound recordings and process for i

Details Master for the duplication of sound recordings and process for i Master for the duplication of sound recordings and process for i

1996-03-15

1997-09-16

Niebling, John

Electrolysis: processes, compositions used therein, and methods

Product produced by electrolysis involving electrolytic...

205 67, 205 68, 205 70, 20419215, C25D 110

Patent

active

056676581

ABSTRACT:
A plate made of silicate glass (glass master) (3) is provided with a pressing surface (surface coat) carrying the sound recording in the form of raised contours formed from a photoresist (5) with a layer of primer (adhesion promotor) (4) to hold the photoresist layer (5) to the glass plate (3). A first metal layer (6) is deposited on the photoresist (5) from a sputter target which consists of a NiV alloy; and a protective layer (7) of nickel is electrolytically deposited on the first layer. The metal master (8) consisting of first layer (6) and protective layer (7) is pulled from the photoresist layer (5).

REFERENCES:
patent: 4552820 (1985-11-01), Lin
patent: 5006058 (1991-04-01), Maruyama et al.
patent: 5015388 (1991-05-01), Tabuchi

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