摘要:
Photographic materials containing in at least one photographic layer as antihalation- or filter-dyes mono-, tri- or pentamethineoxonoles of 1-sulfolanyl pyrazolones, which dyes can be easily decolorized and washed out on treatment of the photographic material in photographic processing.
摘要:
Sensitization of silver halide emulsions by merocyanines and cationic cyanines and the stability of this sensitization is improved by addition of heterocyclically substituted thioureas of the formula ##EQU1## wherein R.sup.1 is alkyl, alkenyl or arylR.sup.2 is alkyl, cycloalkyl or aryln is 0 or 1, andZ completes a 5- or 6-membered heterocyclic group, preferably one which also contains a sulfur atom.
摘要翻译:通过加入式Z R1-N-(CH = CH-)nC = N-CS-NH-R2的杂环取代的硫脲来改善通过部花青和阳离子花青的卤化银乳剂的敏化和这种增感的稳定性,其中R1是 烷基,链烯基或芳基R2是烷基,环烷基或芳基N IS 0 OR 1,Z完成5-或6-元杂环基,优选含有硫原子的杂环基。