申请人:Fuji Photo Film Co., Ltd.
公开号:EP0458485A2
公开(公告)日:1991-11-27
An image forming layer comprising a polymer which has a component showing UV absorption at 320 nm or higher and a component containing the carboxylic acid (carboxylate) group represented by the following general formula I:
-(Y)₁ -X-(CH₂)k -COOT (I)
wherein X represents sulfur, oxygen, single bond, C=W or N-U where W represents oxygen or sulfur and U represents an optionally substituted aryl, alkyl group or hydrogen, Y represents an optionally substituted alkylene, arylene, aralkylene group or divalent heterocyclic ring, and T represents a hydrogen, alkali metal, alkaline earth metal or HN(R¹)(R²)(R³) where R¹, R² and R³, which may be identical or different, independently represent a hydrogen atom, optionally substituted alkyl or aryl group and R¹, R² and R³ may join together to form a ring structure, k represents 0 or 1 and l is 0 or 1, provided that X represents C=W when k is 0. The image forming layer shows an extremely high sensitivity and excellent cratch resistance of the image areas upon development.
一种图像形成层,由一种聚合物和一种含有羧酸(羧酸盐)基团的组分组成,前者具有 320 纳米或更高的紫外线吸收率,后者由以下通式 I 表示:
-(Y)₁ -X-(CH₂)k -COOT (I)
其中 X 代表硫、氧、单键、C=W 或 N-U,其中 W 代表氧或硫,U 代表任选取代的芳基、烷基或氢,Y 代表任选取代的亚烷基、亚芳基、芳烷基或二价杂环,T 代表氢、碱金属、碱土金属或 HN(CH₂)k、其中 R¹、R² 和 R³ 可以相同或不同,各自代表氢原子、任选取代的烷基或芳基,R¹、R² 和 R³ 可以连接在一起形成环状结构,k 代表 0 或 1,l 代表 0 或 1,条件是当 k 为 0 时,X 代表 C=W。图像形成层在显影时显示出极高的灵敏度和图像区域极佳的抗擦伤性。