Recording sheet
AssigneeFuji Photo Film Co., Ltd.
InventorsShojiro Sano, Keiso Saeki
Life of this patent
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Abstract
A recording sheet comprising microcapsules containing a substantially colorless electron donating dye, a diarylaminofluoran derivative, and a quinoline derivative represented by formula (I) ##STR1## wherein R.sub.1 represents a hydrogen atom, an alkoxy group having from 1 to 8 carbon atoms, an aryloxy group having from 6 to 18 carbon atoms or an aralkyloxy group having from 7 to 18 carbon atoms; R.sub.2 represents a hydrogen atom or a methyl group; and n is an integer of 1 to 10. The recording sheet has a layer of microcapsules which does not turn blue on the surface thereof and does not experience any color staining where a surface of the coating is cut.
Claims14
A pressure-sensitive recording sheet comprising microcapsules containing a solution which consists essentially of (1) a diarylaminofluoran derivative as a substantially colorless electron donating dye, and (2) a quinoline derivative represented by formula (I) ##STR4## wherein R.sub.1 represents a hydrogen atom, an alkoxy group having from 1 to 8 carbon atoms, an aryloxy group having from 6 to 18 carbon atoms or an aralkyloxy group having from 7 to 18 carbon atoms;
- R.sub.2 represents a hydrogen atom or a methyl group;
- and n is an integer of 1 to 10, said solution being free of color developers.
Dependencies are inferred from the claim text.