Thermal sensitive recording sheet

Details Thermal sensitive recording sheet Thermal sensitive recording sheet

1996-09-19

1998-05-19

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, 503208, 503216, 503225, B41M 526

Patent

active

057535868

ABSTRACT:
A thermal sensitive recording sheet comprising a substrate having thereon a thermal sensitive color developing layer mainly composed of basic leuco dye and an organic color developer, characterized by said thermal sensitive developing layer includes derivatives of amino benzene sulfone amide indicated by general formula (I) as an organic color developer, and includes sulfone amide compound indicated by general formula (II) as a sensitizer by amount of 0.01-2 parts based on 1 part of the color developer indicated by general formula (I). ##STR1## wherein "X" indicates an oxygen or sulfur atom, "Y" indicates a lower alkyl group of carbon number 1-4 or electron attracting group and "m" indicates an integral number from 0 to 4. "R" indicates a non-substituted or a substituted phenyl group, aralkyl group, lower alkyl group of carbon number 1-6, cycloalkyl group of carbon number 3-6, lower alkenyl group of carbon number 2-6 or naphthyl group. ##STR2## wherein "Z" indicates a lower alkyl group of carbon number 1-6 or electron attracting group. "n" indicates an integral number from 0 to 2.

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U.S. Patent Application Serial No. 08/504,784.
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