Thermosensitive recording sheet

Details Thermosensitive recording sheet Thermosensitive recording sheet

1988-04-04

1989-06-27

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...

427150, 427151, 428913, 503208, 503225, B41M 518

Patent

active

048430587

ABSTRACT:
A thermosensitive recording sheet having a coated film containing a color-forming lactone compound, an acidic substance and a sensitizer, said sensitizer being a sulfur-containing dibasic acid ester represented by formula (I) ##STR1## wherein n is an integer of 1 to 3, m is an integer of 1 or 2, R.sup.1 and R.sup.2 may be the same or different and each denotes an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group, an aryl group, --C.sub.l H.sub.2l --Ar or --C.sub.l H.sub.2l --CO--AR in which l is an integer of 1 to 8 and Ar denotes an aryl group, provided the alkyl group having 1 to 20 carbon atoms may be substituted by a halogen atom, and the cycloalkyl group, the aryl group and Ar of --C.sub.l H.sub.2l --Ar or --C.sub.l H.sub.2l --CO--Ar may be substituted by an alkyl group, a cycloalkyl group, an aryl group, an aralkyl group, a phenacyl group, an alkyloxy group, an aryloxy group, an aralkyloxy group, an arylcarbonyl group, an arylsulfonyl group, a nitro group, an ammonium sulfonic acid group or a halogen atom.

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