Heat-sensitive record material

Details Heat-sensitive record material Heat-sensitive record material

1984-07-10

1985-09-10

Hess, Bruce H.

Recorders

Record receiver deforming

346217, 346221, 346225, 427150, 427151, B41M 518

Patent

active

045409994

ABSTRACT:
This invention provides a heat-sensitive record material comprising a base sheet and a heat-sensitive record layer formed over the base sheet and containing a colorless or pale-colored basic dye and a color developing material capable of forming a color when contacted with the dye, the record material being characterized in that the heat-sensitive record layer contains as the color developing material at least one compound represented by the formula ##STR1## wherein R.sub.1 and R.sub.2 are each alkyl having 1 to 8 carbon atoms, a group ##STR2## or a group ##STR3## wherein R.sub.3 and R.sub.4 are each a hydrogen atom, chlorine atom, hydroxyl or alkoxy having 1 to 8 carbon atoms, the heat-sensitive record layer further containing at least one compound selected from the group consisting of 1,1-bis(4-hydroxyphenyl)cyclohexane and hindered phenol compounds.

REFERENCES:
patent: 3965282 (1976-06-01), Janssens et al.
patent: 4503446 (1985-03-01), Yahagi et al.

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