Heat-sensitive recording material
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United States of America Patent
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-
Jan 14, 1992
Grant Date -
N/A
app pub date -
Jul 19, 1990
filing date -
Jul 19, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A heat-sensitive recording material wherein a color-forming layer comprising a coupling substance which is usually colorless or light-colored and a developer which gives rise to color in the coupling substance upon heating further contains, as a sensitizer, a tetrahydronaphthalene compound of the following general formula (I): ##STR1## wherein X represents an alkylene group, --O--CO--O--, --O--CO-- or --O--R'.sub.n Y--, n represents 1 or 2, Y represents --O-- or --S--, R' represents an alkylene group, and R represents a phenyl, alkylphenyl or tetrahydronaphthyl group.
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