Abstract: A thermal transfer ink is provided, which includes: at least one dye (a); at least one dye selected from the group including dye (b), dye (c) and a mixture thereof; and a medium; wherein (a) is a dye having a pyrazolone methine skeleton, (b) is a dye having a quinophthalone skeleton, and (c) is a dye having an aminopyrazole azo skeleton.

Abstract: A thermal transfer ink is provided, which includes:

Abstract: A disazo dye for thermal transfer recording of the following formula (I): wherein each of rings A and B which are independent of each other, is a benzene ring which may have a substituent, R1 is a C1-4 substituted or unsubstituted alkyl group, and R2 is a group selected from the group consisting of a hydrogen atom and a C1-4 substituted or unsubstituted alkyl group.

Abstract: A thermal transfer recording material for use in a recording apparatus in which said thermal transfer recording material is introduced into a transfer section having a porous structure by an effect of capillarity, subjected to a state transformation by heating, and then transferred to a recording medium disposed opposed to said transfer section, comprising:a dye having a melting point of 160.degree. C. or lower, selected from the group consisting of a dye represented by the general formula (I): ##STR1## wherein A.sup.1, R.sup.1 and R.sup.2 are as defined, and a dye represented by the general formula (II): ##STR2## wherein A.sup.2, R.sup.3 and R.sup.4 are as defined.

Abstract: A thermal transfer recording material for use in a recording apparatus in which the thermal transfer recording material is introduced into a transfer section having a porous structure by an effect of capillarity, subjected to a state transformation by heating, and then transferred to a recording medium disposed in an opposed relation to the transfer section, comprising:a dye represented by the general formula (I): ##STR1## where R.sup.1 and R.sup.2 are individually a substituted or unsubstituted alkyl or alkenyl group, or a cycloalkyl group, and when both R.sup.1 and R.sup.2 are unsubstituted alkyl groups, at least one of R.sup.1 and R.sup.2 is a branched alkyl group.

Abstract: A benzothiazole azo dye for thermal transfer recording of the following formula (I): ##STR1## wherein R.sup.1 is a C.sub.3-8 branched chain alkyl group, R.sup.2 is a substituted or unsubstituted alkyl group, X is a hydrogen atom, a lower alkyl group, a formylamino group, a lower alkylcarbonylamino group, a lower alkoxycarbonylamino group or a benzoylamino group, Y is a chlorine atom or a bromine atom, and Z is a hydrogen atom, a chlorine atom or a bromine atom.

Abstract: A thermal transfer recording material for use in a recording apparatus in which the thermal transfer recording material is introduced into a transfer section having a porous structure by an effect of capillarity, subjected to a state transformation such as vaporization or droplet formation by heating, and then transferred to a recording medium disposed opposed to the transfer section, comprising:a dye having a molecular weight of 400 or less and represented by the general formula (I): ##STR1## where A is a substituted or unsubstituted p-phenylene group, R.sup.1 and R.sup.2 are individually a hydrogen atom, a substituted or unsubstituted alkyl or alkenyl group, a cycloalkyl group or a substituted or unsubstituted phenyl group; and R.sup.1 may constitute a heterocyclic group composed of a five- or six-member ring in combination with the p-phenylene group A and a nitrogen atom adjacent to the p-phenylene group A, or another heterocyclic group composed of a five- or six-member ring in combination with R.sup.

Abstract: A thermal transfer recording material for use in a recording apparatus in which the thermal transfer recording material is introduced into a transfer section having a porous structure by an effect of capillarity, subjected to a state transformation such as vaporization or droplet formation by heating, and then transferred to a recording medium disposed opposed to the transfer section, comprising:a dye having a melting point of 115.degree. C. or lower and represented by the general formula (I): ##STR1## where A is a substituted or unsubstituted p-phenylene group, R.sup.1 and R.sup.2 are individually a hydrogen atom, a substituted or unsubstituted alkyl or alkenyl group, a cycloalkyl group or a substituted or unsubstituted phenyl group; and R.sup.