| 摘要 |
PURPOSE:To obtain a photosensitive material which has a high color forming density even if said material is quickly processed with a color developing soln. contg. no benzyl alcohol by incorporating the precursor of a color developing agent and compd. having specific structure into the photosensitive material. CONSTITUTION:The precursor of the color developing agent and at least one of the compd. expressed by formula I, formula II, formula III and formula IV are incorporated into the photosensitive material. In formula I, R1 is an H atom, R2, R3, R5, R6 are an H atom, halogen atom, etc., R4 is an alkyl group, etc. R1 and R2 may form 5--6-membered rings by ring closure with each other and R4 in such a stage is a hydroxy group or alkoxy group. In formula II, formula III, R1, R4 are an H atom, halogen atom, etc., R2 is an H atom, alkyl group, etc., R3 is an H atom, halogen atom, etc. In formula IV, R' is an aliphat. group, cycloalkyl group, etc., Y is a nonmetallic atom group necessary for forming the heterocycle of 5--7-membered rings with an N atom. |
