| 摘要 |
PROBLEM TO BE SOLVED: To obtain a heat-sensitive recording material with excellent light resistance and especially, with both light resistance and fixing properties by incorporating a compd. of a specified formula in the heat-sensitive recording material in which a heat-sensitive recording layer and a protective layer are provided on a substrate. SOLUTION: A heat-sensitive recording material is obtd. by providing a heat-sensitive recording layer and a protective layer on a substrate. In addition, in this heat-sensitive recording material, a compd. of formula I and II (wherein m is 1 or 2 and A is -SO2 R<1> , -COR<1> (R<1> is an alkyl group, etc.,) when m=1 in formula I and in formula II and -SO2 R<8> SO2 - (R<8> is an alkylene group, etc.,), -CO- when m=2 is formula I and Z<1> and Z<3> are each a hydrogen atom, an alkyl group, etc., and Z<2> is the same as Z<1> or -O-A and X and Y is a group of formula III, an alkyl group, etc.,) is incorporated. In this heat-sensitive recording material, by incorporating a compd. in which light transmittance in the wavelength region for light fixing decreases after fixing, it exists good fixing properties and after fixing, light resistance of the heat-sensitive recording material is improved. |
