| 摘要 |
Heat-sensitive recording sheet comprises: (a) an electron-donating leuco dye; (b) an acidic developer comprising a phenolic compound containing a sulfonyl group; and (c) a sensitizer comprising N-(4-tolyl)phenylacetamide. Independent claims are also included for the following: (1) A heat-sensitive recording sheet comprising: (a) an electron-donating leuco dye; (b) an acidic developer comprising a phenolic compound containing a sulfonyl group; and (c) a sensitizer comprising at least two compounds (I) selected from N-cyclohexylphenylacetamide, N-phenylphenylacetamide, N-(2-tolyl)phenylacetamide, N-(4-tolyl)phenylacetamide, N-phenylphenoxyacetamide, N-(4-tolyl)phenoxyacetamide, N-phenyl-4-tolyloxyacetamide and N-(4-tolyl)-4-tolyloxyacetamide. (2) A heat-sensitive recording sheet comprising: (a) an electron-donating leuco dye; (b) an acidic developer comprising a phenolic compound containing a sulfonyl group; and (c) a sensitizer comprising at least compound (I) and at least one compound selected from 1,2-diphenoxyethane, 1,2-di(3-tolyloxy)ethane, 2-benzyloxynaphthalene and di(4-methylbenzyl) oxalate.
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