Record receiver having plural interactive leaves or a colorless – Having a colorless color-former – developer therefor – or... – Heavy metal reactant
Patent
1988-12-27
1990-04-24
Hess, Bruce H.
Record receiver having plural interactive leaves or a colorless
Having a colorless color-former, developer therefor, or...
Heavy metal reactant
427150, 503212, 503216, 503225, B41M 516, B41M 518, B41M 520
Patent
active
049200917
ABSTRACT:
A recording medium comprising at least one electron donating colorless dye and at least one electron accepting compound, wherein the electron accepting compound is a salicylic acid compound represented by formula (I): ##STR1## wherein R represents a divalent group; X and Y, which may be the same or different, each represents a hydrogen aotm, an alkyl group, an aryl group, an alkoxy group, or a halogen atom; and Z represents a hydrogen atom, a carboxyl group, an alkyl group, an aryl group, an alkoxy group, or a halogen atom, or a metal salt thereof.
REFERENCES:
patent: 3965282 (1976-06-01), Janssens et al.
Ito Koreshige
Iwakura Ken
Matsuoka Katsumi
Sano Shojiro
Satomura Masato
Fuji Photo Film Co. , Ltd.
Hess Bruce H.
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