Record receiver having plural interactive leaves or a colorless – Having a colorless color-former – developer therefor – or... – Having nonchromogenic liquid spread-control or...
Patent
1985-10-09
1988-05-24
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...
427150, 428913, 428914, 503213, 503215, 503221, 503224, B41M 516, B41M 518, B41M 522
Patent
active
047466448
ABSTRACT:
A recording material comprising a support having provided thereon, microcapsules containing a basic leuco dye dissolved in an organic solvent is disclosed. The microcapsules further contains at least one compound selected from the group consisting of 2-mercaptobenzothiazoles, guanidines, thioureas, 2-mercaptoimidazolines and thiurams. The recording material is free from coloration due to exposure to light and provides a recorded image of high density and high contrast.
REFERENCES:
patent: 4489336 (1984-12-01), Aoyagi et al.
patent: 4620941 (1986-11-01), Yoshikawa et al.
Kiritani Masataka
Tanaka Toshiharu
Usami Toshimasa
Fuji Photo Film Co. , Ltd.
Hess Bruce H.
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