MATERIAL FOR INCREASING DYE TRANSFER EFFICIENCY IN DYE-DONOR ELEMENTS USED IN THERMAL DYE TRANSFER

摘要

A dye-donor element for thermal dye transfer comprising a support having on one side thereof a dye dispersed in a polymeric binder, characterized in that the polymeric binder comprises a mixed cellulose ester and the dye-donor element contains a colorless, nonpolymeric material for increasing dye transfer efficiency having the following formula: wherein both R groups represent -CO2J or -O2CJ and are located either ortho or meta to each other; and each J independently represents a substituted or unsubstituted phenyl group, or a substituted or unsubstituted carbomonocyclic or carbobicyclic ring having from about 5 to about 12 carbon atoms, with the proviso that when either or both of J is substituted, then the total number of substituent carbon atoms in each J group is about 8 or less.