Patent ID: 6197724
Filing Date: 2001-03-06
Classification: B41M,G03C

Abstract:
A heat-sensitive recording material comprising in sequence a support, a heat-sensitive recording layer which is provided on the support and contains at least two types of compound which react with each other to develop color by heating imagewise, and a protective layer, wherein at least one of the layers contains the compound represented by the following formula (I):R--(S--P).sub.n Formula (I)wherein R represents a hydrophobic group or a hydrophobic polymer, P represents a polymer including at least one of the below-described structural units A, B, and C, and having a polymerization degree which ranges from 10 to 3500, and n represents 1 or 2, ##STR33##wherein R.sup.1 represents --H or an alkyl group having 1 to 6 carbon atoms, R.sup.2 represents --H or an alkyl group having 1 to 10 carbon atoms, R.sup.3 represents --H or --CH.sub.3, R.sup.4 represents H, --CH.sub.3, --CH.sub.2 COOH or an ammonium salt thereof or a metallic salt thereof or --CN, X represents --H, --COOH or an ammonium salt thereof or a metallic salt thereof or --CONH.sub.2, and Y represents --COOH or an ammonium salt thereof or a metallic salt thereof, --SO.sub.3 H or an ammonium salt thereof or a metallic salt thereof, --OSO.sub.3 H or an ammonium salt thereof or a metallic salt thereof, --CH.sub.2 SO.sub.3 H or an ammonium salt thereof or a metallic salt thereof, --CONHC(CH.sub.3).sub.2 CH.sub.2 SO.sub.3 H or an ammonium salt thereof or a metallic salt thereof or --CONHCH.sub.2 CH.sub.2 CH.sub.2 N.sup.+ (CH.sub.3).sub.3 C.sup.-.