Record receiver having plural interactive leaves or a colorless – Having a colorless color-former – developer therefor – or...
Patent
1992-05-04
1994-04-26
Schwartz, Pamela R.
Record receiver having plural interactive leaves or a colorless
Having a colorless color-former, developer therefor, or...
503201, 503202, 503205, 503226, B41M 528
Patent
active
053066863
ABSTRACT:
A negative-acting, photothermographic material having a first layer comprising an amine compound and a second layer comprising an amine-reactive dye which undergoes a visible change when in reactive association with the amine compound. The amine compound and the amine-sensitive dye are in non-reactive association at ambient and moderate temperatures, but at elevated temperatures the two components are able to interact to produce a visible change in the heated areas of the material. The materials are particularly suitable for the preparation of overhead projector transparencies.
REFERENCES:
patent: 3684552 (1972-08-01), Wiese et al.
patent: 4620204 (1986-10-01), Inaba et al.
patent: 4620205 (1986-10-01), Iiyama et al.
patent: 4665410 (1987-05-01), Iiyama et al.
"Heat Sensitive Copying Material", Research Disclosure, Nov. 1975 1st page of the Disclosure Only.
Baldock Terence W.
Cooper Darren
Newman Donald J.
Patel Ranjan C.
Stibbard John H. A.
Griswold Gary L.
Kirn Walter N.
Litman Mark A.
Minnesota Mining and Manufacturing Company
Schwartz Pamela R.
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