Textiles: manufacturing
Patent
1976-01-30
1978-08-29
Herbert, Jr., Thomas J.
Textiles: manufacturing
250316, 427 56, 427145, 427146, 427147, 427150, 427261, 428480, 428483, 428913, B41L 120, B41M 518, G03C 516
Patent
active
041099370
ABSTRACT:
An acid donor sheet for use in thermographic imaging which comprises a substrate sheet material having a coating comprising an organic acid which is volatilizable at thermographic imaging temperatures, an additive consisting essentially of a fatty acid having from 10 to 26 carbon atoms or a metal salt thereof, and a polymeric binder compatible with said volatilizable acid. A preferred composition is salicylic acid, lauric acid and nitrocellulose on a polyester base. The acid donor sheet of the invention is particularly useful in providing color projection transparencies having improved image density, readability, and permanence.
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Herbert, Jr. Thomas J.
Trans World Technology Laboratories Inc. (TWT Labs, Inc.)
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