Record receiver having plural interactive leaves or a colorless – Having a colorless color-former – developer therefor – or... – Plural colors or plural diverse systems
Patent
1993-05-18
1995-04-25
Hess, B. Hamilton
Record receiver having plural interactive leaves or a colorless
Having a colorless color-former, developer therefor, or...
Plural colors or plural diverse systems
427152, 503200, 503214, 503226, B41M 530, B41M 534, B41M 540
Patent
active
054098807
ABSTRACT:
A multi-color heat-sensitive recording material which comprises a support having thereon at least two heat-sensitive recording layers, each of which comprises a colorless or pale-color color forming agent which forms a color by heating, a color developer and a binder, an intermediate layer being incorporated between the two heat-sensitive recording layers and the intermediate layer comprising at least gelatin and/or a gelatin derivative and polyvinyl pyrrolidone and/or a polyvinyl pyrrolidone derivative, with the polyvinylpyrrolidone and/or the polyvinylpyrrolidone derivative having an average molecular weight of not more than 160,000, the content of which ranges from 1 to 20 percent by weight based on the weight of the gelatin and/or gelatin derivative.
REFERENCES:
patent: 4311750 (1982-01-01), Kubo et al.
Igarashi Akira
Itabashi Yuichi
Fuji Photo Film Co. , Ltd.
Hess B. Hamilton
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