| 摘要 |
A heat-sensitive recording sheet comprised of a support base having a heat-sensitive color forming layer thereon is disclosed. The layer is comprised of an electron donating dye, an electron accepting compound which reacts with the dye to form a color and a surface active agent. The surface active agent has a structure of <IMAGE> as a hydrophobic atomic group, wherein R1 and R2 independently represent an alkyl group having 3 to 18 carbon atoms, an aryl group having 6 to 18 carbon atoms, an aralkyl group having 7 to 18 carbon atoms, or a cycloalkyl group having 5 to 10 carbon atoms. The heat-sensitive recording sheet has high sensitivity, produces high density color images and results a reduced amount of background fog. |
