| 摘要 |
PURPOSE:To obviate the fading of a color image, by constituting a color forming recording body by allowing a specific diphenylsulfone derivative to be present on a support along with a light-colored electron donating color forming dye and an acidic substance. CONSTITUTION:A colorless or light-colored electron donating color forming dye, an acidic substance and a diphenylsulfone derivative represented by formula I (wherein R<1> is a group represented by formula II, Ru<2> is a hydrogen atom or an alkyl group, X<1> and X<2> are respectively independently a halogen atom, an alkyl group or an alkoxy group, m is 0 or 1, p is an integer of 0-5, q is an integer of 0-4 and alpha is an integer of 0-5) are mixed to prepare an aqueous coating suspension which is, in turn, applied to a support and dried to form a color forming recording body. A filler, a sensitizer and a dispersant etc. can be further compounded with the aforementioned suspension. |
