Heat-sensitive recording material

Details Heat-sensitive recording material Heat-sensitive recording material

1986-12-16

1988-05-24

Hess, Bruce H.

Record receiver having plural interactive leaves or a colorless

Having a colorless color-former, developer therefor, or...

Heavy metal reactant

427150, 503211, 503212, 503216, 503225, B41M 518

Patent

active

047466456

ABSTRACT:
Disclosed is a heat-sensitive recording material comprising a base sheet and a heat-sensitive record layer formed over the base sheet and comprising a colorless or pale-colored basic dye and a color developing material capable of forming a color when contacted with the dye, the heat-sensitive recording material being characterized in that the heat-sensitive record layer contains as the color developing material at least one multi-valent metal salt of a halophthalic acid derivative represented by the formula ##STR1## wherein R represents a divalent saturated or unsaturated C.sub.2 -C.sub.12 aliphatic hydrocarbon group which may optionally have a hydroxyl, C.sub.1 -C.sub.3 acyloxy or phenyl group as a substituent or a divalent saturated or unsaturated C.sub.4 -C.sub.6 aliphatic hydrocarbon group containing one or two ether bonds, X is a halogen atom and n is an integer of 1-4.

REFERENCES:
patent: 3911171 (1975-10-01), Janssens et al.
patent: 4498091 (1985-02-01), Yamato et al.
patent: 4503446 (1985-03-01), Yahagi et al.
patent: 4540999 (1985-09-01), Arai
patent: 4590500 (1986-05-01), Satake et al.

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