申请人:AGFA-GEVAERT
naamloze vennootschap
公开号:EP0224951A1
公开(公告)日:1987-06-10
Dye image-receiving element, which in an image-receiving layer or in a hydrophilic colloid layer comprises as an anti-fading agent a 2,2,6,6-tetramethyl-substituted piperidine or piperidinium salt of the formulae I and II:
wherein:
wherein L is -CO- , -CO-CO- , or -SO₂- ; Z is a single bond, -O- or -N(R²)- , R² being H, alkyl, aryl, aralkyl, or a heterocyclic group; Ball is a ballasting group; R¹ is H, alkyl, or aralkyl; Q⁻ is a mono- or polyatomic anion; and/or a polymer comprising recurring structural units, at least some of which are derived from the above anti-fading agents. The invention also provides a dye image-carrying element comprising (a) layer(s) in which a magenta, cyan, and/or yellow dye has (have) been formed by diffusion transfer and comprising an anti-fading agent as defined above.
染料图像接收元件,其图像接收层或亲水胶体层中包含式 I 和 II 的 2,2,6,6-四甲基取代的哌啶或哌啶盐作为抗褪色剂:
其中
其中 L 为-CO- 、-CO-CO- 或-SO₂- ;Z 为单键、-O- 或-N(R²)- ,R² 为 H、烷基、芳基、芳烷基或杂环基团;Ball 为镇定基团;R¹ 为 H、烷基或芳烷基;Q- 为单原子或多原子阴离子;和/或由重复结构单元组成的聚合物,其中至少有一部分来自上述防褪色剂。本发明还提供了一种染料图像承载元件,该元件包括(a)层,其中品红、青色和/或黄色染料已通过扩散转移形成,并包含如上定义的抗褪色剂。