申请人:Ciba-Geigy AG
公开号:US04266011A1
公开(公告)日:1981-05-05
A process for the production of colored photographic images by the silver dye-bleach process by image-wise exposure and subsequent processing by developing the silver image, dye-bleaching and silver bleaching, it being possible, optionally, for the last two steps to be combined, silver fixing and washing, in which process dye-bleaching and/or silver bleaching is carried out in the presence of at least one bleach catalyst of the formula ##STR1## In the formula, A and B are in each case the non-metallic atoms necessary to complete a benzene or pyridine ring, R.sub.1 and R.sub.3 are each hydrogen, hydroxyl, halogen, alkyl, carboxyl, carbalkoxy, carbalkoxyalkoxy, --CH.sub.2 OH, --O(CH.sub.2).sub.n OH, --O(CH.sub.2).sub.2 O(CH.sub.2).sub.2 OH, --CH.sub.2 Cl, --CH.sub.2 Br, --NR.sub.5 R.sub.6, --CH.sub.2 NR.sub.5 R.sub.6, --O(CH.sub.2).sub.n NR.sub.5 R.sub.6, --CH.sub.2 SO.sub.3 M, --O(CH.sub.2).sub.n SO.sub.3 M or --SO.sub.3 M, R.sub.2 and R.sub.4 are each hydrogen, hydroxyl, alkyl or alkoxy and R.sub.5 and R.sub.6 are each hydrogen or alkyl, M is hydrogen, an alkali metal, ammonium or alkylammonium and n is an integer from 2 to 4.
一种通过图像智能曝光和随后处理银像、染料漂白和银漂白的银染料漂白法生产彩色照片图像的方法,其中最后两个步骤可以选择性地合并进行银定影和洗涤。在该过程中,染料漂白和/或银漂白是在至少一种式子##STR1##的漂白催化剂存在下进行的。在该式子中,A和B分别是完成苯环或吡啶环所需的非金属原子,R.sub.1和R.sub.3分别是氢、羟基、卤素、烷基、羧基、羧烷氧基、羧烷氧基烷氧基、--CH.sub.2 OH、--O(CH.sub.2).sub.n OH、--O(CH.sub.2).sub.2 O(CH.sub.2).sub.2 OH、--CH.sub.2 Cl、--CH.sub.2 Br、--NR.sub.5 R.sub.6、--CH.sub.2 NR.sub.5 R.sub.6、--O(CH.sub.2).sub.n NR.sub.5 R.sub.6、--CH.sub.2 SO.sub.3 M、--O(CH.sub.2).sub.n SO.sub.3 M或--SO.sub.3 M,R.sub.2和R.sub.4分别是氢、羟基、烷基或烷氧基,R.sub.5和R.sub.6分别是氢或烷基,M是氢、碱金属、铵或烷基铵,n是2到4的整数。