发明授权
US5565307A Silver halide photographic material, method for exposing the same, and method for processing the same 失效
卤化银照相材料,其曝光方法及其处理方法

Silver halide photographic material, method for exposing the same, and
method for processing the same
摘要:
Disclosed are a silver halide photographic material containing at least one merocyanine color-sensitizing dye having a particular structure of formula (I) ##STR1## wherein R.sub.1 and R.sub.2 each represent an alkyl group having a residue capable of making the compound soluble in water as a free acid or salt; V.sub.1, V.sub.2, V.sub.3 and V.sub.4 each represent a hydrogen atom or a monovalent substituent, provided that these substituents (V.sub.1, V.sub.2, V.sub.3, V.sub.4) are not bonded to each other to form a ring and that the sum of the molecular weights of V.sub.1, V.sub.2, V.sub.3 and V.sub.4 is from 4 to 50; L.sub.1, L.sub.2, L.sub.3 and L.sub.4 each represent an optionally substituted methine group; M.sub.1 represents a charge-neutralizing pair ion; and m.sub.1 represents a number of from 0 to 4 that is necessary for neutralizing the intramolecular charge.
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