Record receiver having plural interactive leaves or a colorless – Having a colorless color-former – developer therefor – or... – Having nonchromogenic liquid spread-control or...
Patent
1990-09-27
1991-11-19
Hess, Bruce H.
Record receiver having plural interactive leaves or a colorless
Having a colorless color-former, developer therefor, or...
Having nonchromogenic liquid spread-control or...
427151, 503216, 503217, 503221, 503225, B41M 530
Patent
active
050666347
ABSTRACT:
A heat-sensitive recording sheet of this invention comprises in a heat-sensitive color-developing layer both 4-hydroxy-4'-n-propoxydiphenylsulfone as an organic color-developing agent and a particular fluorane-leuco dye. This sheet provides an intense, clear image, less discoloration, and stable brightness.
REFERENCES:
patent: 4814320 (1989-03-01), Kawaii et al.
Fukuchi Tadakazu
Kaneko Toshio
Minami Toshiaki
Ohashi Reiji
Hess Bruce H.
Jujo Paper Co. Ltd.
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