| 摘要 |
PURPOSE:To obtain the titled low-cost material having superior raw stock preservability and giving a high density image by development at low temp. by using a diazo compound contg. a substituted amino group and a color developing air composed of aliphatic amide and amino acid with low solubility in water. CONSTITUTION:A color developing layer contg. a diazo compound, a coupling component and a color developing aid as principal components is formed on a support to obtain the titled material. At this time, as the diazo compound a diazo compound contg. a substituted amino group represented by formulaI [where each of R<1> and R<2> is 1-5 C alkyl; each of R<3> and R<4> is (substitued) alkyl, oxyalkyl, araklyl or cycloalkyl; R<3> and R<4> may form a heterocyclic ring together with N; and x is an anion] and/or formula II [where R<5> is 1-5 C alkyl, (substituted) phenyl or the like; each of R<6> and R<7> is (substituted) alkyl, oxyalkyl, aralkyl or cycloalkyl; R<6> and R<7> may form a heterocyclic ring together with N; and x is an anion] is used, and the color developing aid is composed of aliphatic amide represented by formula III [where R is 5-24 C (un) satd. aklyl] and amino acid with <=0.1wt% solubility in water at 20 deg.C. |
