| 摘要 |
This invention concerns a thermal recording medium for a block copy, comprising: a supporting member, and a thermal recording layer provided on said supporting member, said thermal recording layer including an electron-donating chromophoric compound, an electron-accepting compound and a binder resin, wherein said thermal recording medium has a high light transmission factor at a wavelength ranging from 350nm to 700nm, a color-producing imaging portion of said thermal recording medium formed by thermal energy having absorption peaks at a wavelength ranging from 350nm to 470nm and a wavelength ranging from 470nm to 700nm respectively, the difference in light transmission factor between said color-producing imaging portion and a non-imaging portion being over 35%. |
