| 摘要 |
PURPOSE:To obtain dyestuffs and an ink composition for thermal transfer recording having high sublimating speed and excellent image stability after transfer by using dyestuffs being shown in specific chemical formula and having superior solubility to an ink solvent and the low melting point as sublimating dyestuffs for thermal transfer recording. CONSTITUTION:In a thermal transfer recording system using sublimating dyestuffs, a transfer sheet, in which a base film, etc., are coated with sublimating dyestuffs, is used, and the transfer sheet is heated selectively by a thermal head, thus conducting transfer to recording paper. Dyestuffs shown in general formula mentioned on the right are employed as the sublimating dyestuffs at that time. In formula, R<1> represents a hydrogen atom, an alkyl group, etc., R<2> the hydrogen atom, a halogen atom, etc., R<3>, R<4> the hydrogen atom, the alkyl group, etc., R<5> the hydrogen atom, an alkenyl group, etc., R<6> the hydrogen atom, an alkoxy group, etc., and R<7>, R<8> the hydrogen atom, a substituted or non-substituted alkyl group, an aryl group, etc. The dyestuffs are kneaded with a binder resin, an organic solvent, etc., thus acquiring an ink composition for thermal transfer recording. |
