| 摘要 |
PURPOSE:To form the negative type image which has a space edge and a good reproducibility with water-processing by forming the titled composition by a negative type photosensitive agent composed of a diazo resin, a polyvinyl pyrolidone compd. having average mol.wt. of 20,000-1,000,000, and a coloring agent. CONSTITUTION:The titled composition contains the negative type photosensitive agent composed of the diazo resin, the polyvinyl pyrolidone compd. having average mol.wt. of 20,000-1,000,000, and the coloring agent. The wt. ratio of the photosensitive agent ant the polyvinyl pyrolidone compd. is usually (0.05:10)-(5:1), preferably (0.1:1)-(1:1). The titled composition having a good washing-out and developing properties is obtd. by using the wt. ratio of said range. The compounding ratio of the coloring agent is 1-10wt%, preferably 1-5wt% on the basis of the total amount of the photosensitive agent and the polyvinyl pyrolidone compd. The good image density and the clear image are obtd. by using the compounding ratio of said range. |
