| 摘要 |
PURPOSE:To enhance a sublimation speed and image stability by using a cyan dye having a structure represented by a predetermined general formula as a dye for color hard copy. CONSTITUTION:A cyan dye has a structure represented by general formula (I) (wherein R1-R3 are a hydrogen atom, a hydroxyl group, a 1-4C alkyl group, a trifluoromethyl group, an alkoxy group, an alkoxyalkyl group, a hydroxyalkyl group, an alkylcarboxyl group, an alkoxycarbonyl group or a halogen atom and, as examples of R1-R3 there are a 1-8C alkyl group such as methyl, ethyl or n-octyl, a trifluoromethyl group, a 1-4C alkoxy group such as methoxy or tert-buthoxy, a 1-8C alkoxycarbonyl group such as methoxycarbonyl or tert- buthoxycarbonyl, fluorine or chlorine). |
