| 摘要 |
PURPOSE:To obtain a dyestuff satisfying the requirements of heat resistance, light fastness, speed of sublimation, hue and ribbon stability by using a cyan color heat- sensitive sublimation transfer type dyestuff expressed by a specific formula. CONSTITUTION:A heat-sensitive sublimation transfer sheet is obtained by containing at least one or two kinds or more of cyan color heat-sensitive sublimation transfer type dyestuffs expressed by a general formula (I) and dyestuffs selected from the group of said dyestuffs expressed by the general formula (I). Because the sublimation transfer quantity of cyan color dyestuffs shown by the general formula (I) can be controlled by the change of energy given to thermal heat at the time of thermal transfer, gradation recording is easily performed by the use of the dyestuffs, which are therefore suitable for full-color recording. Further, because these dyestuffs are stable to heat, light, moisture, chemicals, etc., they are not pyrolyzed during transfer recording and the keeping quality of the obtained record is also excellent. These dyestuffs are satisfactory in the solubility in an organic solvent and dispersibility in water so that uniformly dissolved or dispersed ink is adjusted easily and a record excellent in color and concentration can be obtained consequently. |
