Radiation imagery chemistry: process – composition – or product th – Post imaging processing – Physical developing
Patent
1980-04-30
1981-08-04
Louie, Jr., Won H.
Radiation imagery chemistry: process, composition, or product th
Post imaging processing
Physical developing
430 5, 430319, 430 17, 430 9, 156322, 156330, 156268, 430 11, B29C 1708, G03C 524
Patent
active
042823145
ABSTRACT:
A mask for selectively transmitting therethrough a desired light radiant energy is disclosed. The mask comprises a stress-relieved, essentially dimensionally stable base, comprising a copolymer of tetrafluoroethylene and hexafluoropropylene, which is capable of transmitting therethrough the light radiant energy. A blocking film is deposited on at least a portion of the base for blocking the transmission of the light radiant energy through the portion of the base.
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Dinella Donald
Wong Ching-Ping
Louie, Jr. Won H.
Spivak J. F.
Western Electric Co. Inc.
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