| 摘要 |
PURPOSE:To obtain an image forming composition developing yellow by oxidation and usable as a material for a PS plate, a photoresist, a proofing material or the like by adding a specified xanthene compound developing color by oxidation to an image forming composition. CONSTITUTION:A xanthene compound developing color by oxidation and represented by the formula is added to an image forming composition. In the formula, R1 is 1-8C alkyl or aralkyl, R2 is 1-8C alkoxy, lower alkyl, phenoxy, aralkoxy or optionally substituted amino, the substituent is alkyl, aryl or aralkyl, each of X, Y and Z is halogen, n, m and l are the numbers of X, Y and Z substituted on the aromatic rings, respectively, each of n and m is an integer of 0-2 and l is an integer of 0-4. The resulting image forming composition consists of the xanthene compound, a photooxidizing agent, an auxiliary coupler and a binder or further contains a fixing agent as required. |
