Heat-sensitive recording material using chromeno compound

Details Heat-sensitive recording material using chromeno compound Heat-sensitive recording material using chromeno compound

1987-12-23

1989-02-07

Hess, Bruce H.

Record receiver having plural interactive leaves or a colorless

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

Having nonchromogenic liquid spread-control or...

427151, 428913, 503210, 503211, 503212, 503217, 503218, 503223, B41M 518

Patent

active

048031933

ABSTRACT:
In a heat-sensitive recording material comprising on a substrate a recording layer containing a colorless or pale-colored basic dye and an electron accepting reactant material, the heat-sensitive recording material which is characterized in that the basic dye comprises at least one chromeno compound represented by the formula [I] below ##STR1## wherein G and R.sub.1 .about.R.sub.4 are defined in the specification.

REFERENCES:
patent: 4174856 (1979-11-01), Balli et al.
patent: 4220356 (1980-09-01), Usui et al.
patent: 4506073 (1985-03-01), Balli et al.

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