Photographic silver halide materials and processes employ at least one coupler having a coupling-off group which includes a carbocyclic or heterocyclic ring which bears a silyl substituent on at least one of its ring carbon atoms and is attached via another of its ring atoms either directly or through a linking group or atom to the coupling position of the coupler. The silyl substituent bears three groups which are independently aromatic groups, heterocyclic groups, aliphatic groups or additional silyl groups bonded through a linking atom to the silicon atom in said silyl substituent.
摄影
银卤素材料和工艺至少使用一种
偶联剂,其具有包括一个碳环或杂环的偶联-离去基团,该基团在其环碳原子中至少有一个带有
硅取代基,并通过其另一个环原子直接或通过连接基团或原子连接到
偶联剂的偶联位置。
硅取代基团带有三个基团,它们是独立的芳香族基团、杂环基团、脂肪族基团或通过连接原子与
硅原子键合的附加
硅基团。