Radiation imagery chemistry: process – composition – or product th – Imaged product – Nonsilver image
Patent
1989-10-17
1991-04-02
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Imaged product
Nonsilver image
430 14, 430 15, 430 18, 430270, 430271, 430320, 430321, 430324, 430326, 430964, 430945, G03C 100, G03C 300
Patent
active
050046608
ABSTRACT:
The master disc contains a substrate plate which is preferably provided with an optically detectable guide track and a recording layer of polysulphone such as poly(1-butene sulphone) to which, preferably, a colorant is added and in which an optically readable information track is provided by patterned exposure, a pit or groove being formed in the polysulphone layer. A matrix is formed by applying a metal layer to the polysulphone layer by means of an electroless deposition process and then, applying a further metal layer by means of an electrodeposition process or applying a curable synthetic resin layer together with a metal disc, after which the synthetic resin is made to cure.
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Van Andel Maarten A.
van Liempd Johannes P. J. G.
Wijn Josephus M.
Bowers Jr. Charles L.
Chea Thorl
Spain Norman N.
U.S. Philips Corporation
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