| 摘要 |
THE OBJECT OF THIS INVENTION IS TO PROVIDE A THERMALLY SENSITIVE RECORDING MEDIUM WHICH HAS GOOD COLOR DEVELOPING SENSITIVITY, EXCELLENT HEAT RESISTANCE GOOD GROUND COLOR.@A THERMALLY SENSITIVE RECORDING MEDIUM WHICH POSSESSES A THERMALLY SENSITIVE COLOR DEVELOPING LAYER CONTAINING COLORLESS OR PALE COLORED BASIC LEUCO DYE AND AN ORGANIC COLOR DEVELOPING AGENT AS MAIN COMPONENTS ON A SUBSTRATE, WHEREIN SAID THERMALLY SENSITIVE RECORDING LAYER CONTAINS AT LEAST ONE KIND OF DIHYDROXYDIPHENYLSULFON TYPE COMPOUND REPRESENTED BY GENERAL FORMULA (1) AS AN ORGANIC COLOR DEVELOPING AGENT, FURTHER CONTAINS AT LEAST ONE KIND OF SULFONAMIDE COMPOUND REPRESENTED BY GENERAL FORMULA (2), @WHEREIN, R1 AND R2 INDICATE AN ALKYL GROUP OR AN ALKENYL GROUP OF CARBON NUMBER 1-8, OR A HALOGEN ATOM AND A AND B IS AN INTEGER NUMBER OF 0-3, WHEREIN, R3 INDICATES AN ALKYL GROUP OF CARBON NUMBER 1-6 OR AN ELECTRON ATTRACTIVE GROUP AND N INDICATES AN INTEGER OF 0-2.
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