Patent ID: 6852671
Filing Date: 2005-02-08
Classification: B41M

Abstract:
1. A heat-sensitive recording material comprising, on a support, a heat-sensitive color-developable layer containing an electron-donating colorless dye and an electron-accepting compound that undergoes a reaction with the electron-donating colorless dye to cause color development, wherein: the electron-accepting compound contains a compound represented by the following general formula (1); an adhesive strength when an adhesive sheet is affixed to a recording face of a heat-sensitive recording paper comprising the heat-sensitive recording material is such a strength that when the adhesive sheet is affixed to the recording face of the heat-sensitive recording paper, the heat-sensitive recording paper is hung down on an iron rod having a diameter of 8 mm such that the affixed portion contacts the rod, and the heat-sensitive recording paper is reciprocated such that the affixed portion is rubbed at a load of 500 g, the number of reciprocations required for at least ⅓ of the affixed area of the adhesive paper to be peeled off is 10 or more; and a center line average roughness Ra75 of the heat-sensitive recording face is 2.0 μm or less and wherein, in general formula (1), R  R 1 —Ph—SO 2 R 2   General formula (1).