| 摘要 |
PURPOSE:To improve the sensitivity of the title material, without injuring the graininess of the material by incorporating at least one kind of a specified compd. having the function of a nucleus forming agent and at least one kind of a compd. capable of being released the nucleus forming agent, a developing accelerating agent or its precursors at the time of developing the material, in the sensitive material. CONSTITUTION:The sensitive material contains at least one kind of the compd. shown by formula I and at least one kind of the compd. capable of being released the nucleus forming agent, the developing accelerator or its precursors contd. in each photosensitive layers respectively at the time of developing the material. In the formula, Z<1> is a nonmetal atomic group necessary for forming a 5-6 membered heterocyclic ring, R<1> is an aliphatic group, X is a group shown by formula II or III, Q is a nonmetal atomic group necessary for forming 4-12 membered nonaromatic hydrocarbon ring, and at least one of the substituting groups R<1>, Z<1> and Q is alkyl group, and Y is a pair ion for balancing an electric charge, (n) is a number necessary for balancing the electric charge. The sensitivity of the sensitive material is improved, without injuring the graininess of the material by incorporating the compd. mentioned above in the material, and the sensitive material capable of rapidly processing and having a good shelf-life is obtd. |
