Heat-sensitive recording medium

Details Heat-sensitive recording medium Heat-sensitive recording medium

1990-08-20

1992-03-24

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...

503208, 503217, 503221, B41M 530

Patent

active

050988824

ABSTRACT:
A heat-sensitive recording medium comprising, on a support, a heat-sensitive color-developing layer containing a colorless or light-colored leuco dye (or an electron-donating dye precursor) and a color-developing agent (or an electron-accepting substance) reacting with the leuco dye to develop color as main constituents, said leuco dye being a compound represented by the formula (I): ##STR1## wherein X represents CH.sub.3 --(CH.sub.2).sub.3 --CH.sub.2 or CH.sub.3 --CH.sub.2 --CH.sub.2 and Y represents CH.sub.3 --(CH.sub.2).sub.3 --Ch.sub.2 or CH.sub.3, and said heat-sensitive color-developing layer containing at least one of the compounds represented by the general formula (II) and (III): ##STR2## where R.sub.1, R.sub.1 ' are respectively any one of H, Cl, and CH.sub.3, and may be the same with or different from each other: ##STR3## where R.sub.2, R.sub.2 ' are respectively any one of H and CH.sub.3, and may be the same with or different from each other.

REFERENCES:
patent: 4925827 (1990-05-01), Goto et al.

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