Aminobenzenesulfonamide derivative and recording medium...

Details Aminobenzenesulfonamide derivative and recording medium... Aminobenzenesulfonamide derivative and recording medium...

B - Operations, Transporting

41

M

B41M 5/30 (2006.01) B41M 5/333 (2006.01)

Patent

CA 2154323

In a thermal recording medium or an optically recordable thermal recording medium including a substrate having thereon a recording layer containing a colorless or pale colored dye precursor and a color developer reactable with the dye precursor to develop a color as main ingredients, the color developer includes at least one aminobenzenesulfonamide derivative of Formula (1): ( 1 ) Image (wherein X denotes oxygen atom or sulfur atom; and R denotes substituted or unsubstituted phenyl group, naphthyl group, aralkyl group, a lower alkyl group of 1 to 6 carbon atoms, cycloalkyl group, or a lower alkenyl group of 2 to 6 carbon atoms, Z denotes a lower alkyl group of 1 to 6 carbon atoms or an electron attracting group, n is an integer from 0 to 4.).

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