Heat-sensitive sublimation transfer cyan dye and transfer sheet

Abstract From the Canadian patent

Described herein are heat-sensitive sublimation transfer cyan dyes represented by the following formula (I):, ( I ), wherein R1 represents a hydrogen atom an alkyl group, an alkoxyl group, an alkylcarbonylamino group a, formylamino group or a halogen atom R2 and R3, represent an alkyl group, an alkenyl group an, alkoxyalkyl group, an aralkyl group an aryl group, a, halogenoalkyl group or a cyanoalkyl group or are coupled together to form a ring, and X represents any one of the following groups:, , and , Heat-sensitive sublimation transfer sheets containing one or more dyes selected from the group of the above dyes are also described.