Record receiver having plural interactive leaves or a colorless – Having a colorless color-former – developer therefor – or... – Having constituent defined in terms of melting temperature
Patent
1987-07-09
1989-08-29
Hess, Bruce H.
Record receiver having plural interactive leaves or a colorless
Having a colorless color-former, developer therefor, or...
Having constituent defined in terms of melting temperature
427151, 428913, 428914, 503212, 503216, 503217, 503220, 503223, B41M 516, B41M 518, B41M 522
Patent
active
048617482
ABSTRACT:
A recording material containing the combination of at least one electron-donating colorless dye containing a p-substituted aminophenylindolyl azaphthalide and at least one electron-accepting compound containing an organic acid having at least one phenolic hydroxyl group. The material provides colored images having improved stability.
REFERENCES:
patent: 4295663 (1981-10-01), Petitpiere
patent: 4508897 (1985-04-01), Bedekovic et al.
patent: 4688060 (1987-08-01), Tanaka et al.
Iwakura Ken
Saeki Keiso
Takashima Masanobu
Fuji Photo Film Co. , Ltd.
Hess Bruce H.
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