Recording material containing leuco dye

Details Recording material containing leuco dye Recording material containing leuco dye

1988-04-07

1989-06-13

Hess, Bruce H.

Record receiver having plural interactive leaves or a colorless

Having a colorless color-former, developer therefor, or...

Identified color-former

427151, 428341, 428342, 428913, 428914, B41M 516, B41M 518, B41M 522

Patent

active

048393339

ABSTRACT:
A recording material comprises a layer containing a leuco dye provided on a support, characterized in that the leuco dye has the following formula (I): ##STR1## in which each of R.sup.1 and R.sup.2 independently is an alkyl group, a cycloalkyl group or an aralkyl group; each of R.sup.3 and R.sup.4 independently is a halogen atom, an alkyl group, a cycloalkyl group, an aralkyl group, alkoxy group or an acylamino group; R.sup.5 is an alkyl group, a cycloalkyl group, an aralkyl group, an alkoxy group, an aryloxy group, a dialkylamino group, an alkoxycarbonyl group, an aryloxycarbony group, a dialkylcarbamoyl group, an aryl group or a heterocyclic group; R.sup.6 is a halogen atom, an alkyl group, an alkoxy group, hydroxyl, amino, an alkylamino group, a dialkylamino group, an acylamino group, nitro, cyano, carbamoyl, sulfamoyl, an aryloxycarbonyl group, an alkoxycarbonyl group, an alkylsulfonyl group, an arylsulfonyl group, an alkylsufonylamino group, an arylsulfonylamino group or an aryl group; l is 0 or 1; m is 0 or 1; n is 0, 1, 2, 3 or 4; and each of R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 may have one or more substituent groups.

REFERENCES:
patent: 3967835 (1976-07-01), Ozutsumi et al.

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