Heat sensitive record material

Details Heat sensitive record material Heat sensitive record material

1983-07-08

1984-11-13

Hess, Bruce H.

Recorders

Record receiver deforming

346208, 346209, 346216, 346217, 346221, B41M 518

Patent

active

044829051

ABSTRACT:
A heat sensitive record material comprising a support sheet and a record layer formed on the support sheet, the record layer being composed essentially of a colorless or light-colored fluoran compound, an acidic substance which is thermally reactive with the fluoran compound to develop a color and a binder, characterized in that said record layer contains an effective amount of at least one benzenesulfonamide compound represented by the general formula: ##STR1## where R.sub.1 is a hydrogen atom, a C.sub.1 -C.sub.5 alkyl group, an acetylamino group or a halogen atom, R.sub.2 is a hydrogen atom, a C.sub.1 -C.sub.5 alkyl group, a cyclohexyl group or a phenyl group which may be substituted and R.sub.3 is a C.sub.1 -C.sub.5 alkyl group, a cyclohexyl group or a phenyl group which may be substituted, provided R.sub.2 and R.sub.3 may form together with N a saturated ring.

REFERENCES:
patent: Re30803 (1981-11-01), Davis

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