Record receiver having plural interactive leaves or a colorless – Having a colorless color-former – developer therefor – or... – Having nonchromogenic liquid spread-control or...
Patent
1990-10-01
1992-06-02
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...
503216, 503217, B41M 530
Patent
active
051186560
ABSTRACT:
A heat-sensitive recording sheet has on a support a color-developing layer which comprises a colorless or pale colored basic chromogenic dye and an organic color-developing agent, wherein the organic color-developing agent comprises both 4-hydroxy-4'-n-propoxydiphenylsulfone and a particular phenolic substance. The sheet of this invention provides excellent writing quality and superior thermal responsibility.
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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