Record receiver having plural interactive leaves or a colorless – Having a colorless color-former – developer therefor – or... – Having nonchromogenic liquid spread-control or...
Patent
1991-04-10
1993-04-27
Hess, B. Hamilton
Record receiver having plural interactive leaves or a colorless
Having a colorless color-former, developer therefor, or...
Having nonchromogenic liquid spread-control or...
427150, 427151, 503216, 503217, 503221, 503226, B41M 530
Patent
active
052062090
ABSTRACT:
A heat-sensitive recording sheet of this invention comprises in a heat-sensitive color-developing layer both bis(4-hydroxyphenyl)butylacetate as an organic color-developing agent and a particular fluorane-leuco dye. This sheet provides an intense clear image less discoloration and superior heat-resistant preservability.
REFERENCES:
patent: 4977132 (1990-12-01), Tsuchida et al.
Fukuchi Tadakazu
Kaneko Toshio
Minami Toshiaki
Hess B. Hamilton
Jujo Paper Co. Ltd.
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