Heat-sensitive recording sheet

Details Heat-sensitive recording sheet Heat-sensitive recording sheet

1981-06-29

1983-08-16

Hess, Bruce H.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having a component wherein a constituent is liquid...

282 275, 428211, 428488, 428537, 428913, B41M 518

Patent

active

043991882

ABSTRACT:
A heat-sensitive recording sheet containing in its color-forming layer a colorless or pale colored chromogenic fluoran-type dyestuff and p-hydroxybenzoic acid ester having the following general formula ##STR1## wherein R represents ##STR2## This heat-sensitive recording sheet incorporates high image density and very preferable recording aptitude with less abrasiveness and less residues accumulated even for long time recording.
Furthermore, a phenol substance having a melting point of more than 90.degree. C. and a solubility of less than 0.1 g per 100 g water, which is used together with said p-hydroxybenzoic acid ester, is useful for lowering the yellowing of the heat-sensitive sheet.

REFERENCES:
patent: 3871900 (1975-03-01), Hayashi et al.
patent: 4168845 (1979-09-01), Oeda et al.

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