Heat sensitive record material

Details Heat sensitive record material Heat sensitive record material

1984-08-31

1985-10-29

Hess, Bruce H.

Recorders

Record receiver deforming

346216, 346217, 346225, 427150, 427151, B41M 518

Patent

active

045503290

ABSTRACT:
A heat sensitive record material comprising at least one colorless or light-colored electron donative dyestuff and at least one color developing agent represented by the general formula: ##STR1## where each of R.sub.1 and R.sub.2 is hydrogen atom, an alkyl group having from 1 to 5 carbon atoms, an alkoxy group having from 1 to 5 carbon atoms or a halogen atom, X is an alkyl group having from 1 to 5 carbon atoms or a halogen atom, Y is a hydroxyl group, an alkyl group having from 1 to 5 carbon atoms or a halogen atom, n is an integer of 1 to 3, and m is an integer of 1 to 4.

REFERENCES:
patent: 4379721 (1983-04-01), Qualitz et al.
patent: 4426424 (1984-01-01), Arai et al.

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