| 摘要 |
PURPOSE:To improve light-resistance and a shelf life by a method wherein transmissivity of light of an image receiving layer is set to a specified value and a difference in a free energy change when specified. CONSTITUTION:In an image receiving substance for sublimation heat transfer recording wherein a dyestuff image receiving layer formed of dyeing property resin is formed on a base material, when transmissivity (%) of light (wavelength lambdanm) per 1mum of the dye image receiving layer is T (lambda), a value of X defined by a formula described at the right is set to 2500 or less. Further, when a free energy change when a dye is mixed in dyeing property resin is set to -x1kj/mol, and when a free energy change when a dye is mixed in polyester, is set to -x2kj/mol, a difference DELTAG in a free energy change defined by DELTAG=(-x1) -(-x2) is set to Okj/mol or less. Polyvinyl vinylidene is used as dyeing property resin. This constitution provides excellent light resistance and shelf life and increases optical density of an image. |
