Radiation imagery chemistry: process – composition – or product th – Post imaging processing – Physical developing
Patent
1980-05-16
1981-12-08
Newsome, John H.
Radiation imagery chemistry: process, composition, or product th
Post imaging processing
Physical developing
427 541, 427 92, 427 98, 4274431, B05D 306
Patent
active
043048498
ABSTRACT:
In an improved method for depositing a metal on a substrate of the type in which a dielectric coated substrate is coated with a sensitizing solution containing a reductible metal salt, a primary reducing agent comprising 2,7 anthraquinone disulfonic acid and a secondary reducing agent, the substrate is exposed to ultraviolet light in an atmosphere having a temperature of at least 117.degree. F. (42.degree. C.) and a mass of water vapor of at least 3.8 mg of water per liter of dry air for at least 15 seconds. In an embodiment of the method the substrate is aerated in a moisture controlled atmosphere at room temperature for at least 30 minutes prior to exposing the substrate to ultraviolet light.
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patent: 3925578 (1975-12-01), Polichette et al.
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Beckenbaugh William M.
Dinella Donald
Goldman Patricia J.
Polakowski, Jr. Theodore D.
Jordan J. J.
Newsome John H.
Western Electric Co. Inc.
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