Blocked photographically useful compounds for use with peroxide-containing processes
申请人:EASTMAN KODAK COMPANY
公开号:EP0547707A1
公开(公告)日:1993-06-23
A method for developing an image in a photographic element comprising the steps of:
(a) providing a photographic element comprising a support, a silver halide emulsion containing an imagewise distribution of developable silver halide grains, and a blocked photographically useful compound comprising a photographically useful group and a blocking group capable of releasing said photographically useful group upon processing in the presence of a peroxide, wherein said blocking group comprises an electrophilic group which is the sole group capable of undergoing a nucleophilic displacement reaction, said electrophilic group being bonded directly or through at least one releasable timing group to said photographically useful group, and
(b) contacting said photographic element with a processing solution comprising a peroxide.
一种在照相元件中冲洗图像的方法,包括以下步骤
(a) 提供一种感光元件,该感光元件包括支撑体、含有可显影的卤化银颗粒按图像方向分布的卤化银乳剂,以及封端摄影有用化合物,该化合物包括一个摄影有用基团和一个封端基团,该封端基团在过氧化物存在下进行处理时能够释放所述摄影有用基团,其中所述封端基团包括一个亲电基团,该亲电基团是唯一能够发生亲核置换反应的基团,所述亲电基团直接或通过至少一个可释放定时基团与所述摄影有用基团键合,以及
(b) 将所述感光元件与含有过氧化物的处理液接触。