Heat-sensitive recording material

Details Heat-sensitive recording material Heat-sensitive recording material

1993-08-24

1995-03-28

Hess, B. Hamilton

Record receiver having plural interactive leaves or a colorless

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

Identified organic electron acceptor other than phenolic resin

503216, 503220, 503221, B41M 518

Patent

active

054016991

ABSTRACT:
The heat-sensitive recording material has on a base sheet a heat-sensitive recording layer which comprises a colorless or pale colored basic chromogenic material and a color developer. The recording layer comprises at least one fluoran derivative developing a black color and at least one azaphthalide derivative represented by the formula (I) as the basic chromogenic material, and at least one diphenylsulfone derivative represented by the formula (II) as the color developer. The azaphthalide derivative is used in an amount of 3 to 50 % by weight based on the amount of the fluoran derivative. ##STR1##

REFERENCES:
patent: 4502066 (1985-02-01), Satake et al.

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