申请人:Fuji Photo Film Co., Ltd.
公开号:US05183733A1
公开(公告)日:1993-02-02
Disclosed are silver halide photographic materials, comprising a support having thereon a layer which contains a compound represented by the following general formula (I): ##STR1## wherein A.sub.1 and A.sub.2 each represents groups of atoms which are required to complete aromatic rings, which may be substituted or unsubstituted; R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each independently represents a hydrogen atom, an alkyl group, an alkenyl group, a phenyl group, a five- or six-membered heterocyclic group, an acyl group or an alkoxy group, which may be substituted or unsubstituted; R.sub.5 and R.sub.6 each independently represents an alkyl group, a phenyl group or a five- or six-membered heterocyclic group, which may be substituted or unsubstituted; X represents a p-valent anion; p represents 1, 2 or 3; L represents a methine group which may be substituted or unsubstituted, or a trivalent linking group wherein three, five or seven methine groups are linked by conjugated double bonds; and X may be bonded to A.sub.1, A.sub.2, R.sub.1 to R.sub.6 or L to form an intramolecular salt. These materials are spectrally sensitized action for light having a long wavelength, but the dyes of general formula (I) have comparatively short methine chains.
本发明涉及一种银卤化物感光材料,包括一种支撑物,其上具有一层,其中包含下述通式(I)所表示的化合物:##STR1## 其中,A1和A2分别表示需要完成芳香环的原子团,可以是取代或未取代的;R1、R2、R3和R4分别独立地表示氢原子、烷基、烯基、苯基、五元或六元杂环基、酰基或烷氧基,可以是取代或未取代的;R5和R6分别独立地表示烷基、苯基或五元或六元杂环基,可以是取代或未取代的;X表示p价阴离子;p表示1、2或3;L表示可以是取代或未取代的亚甲基基团,或者由共轭双键连接的三个、五个或七个亚甲基基团连接而成的三价连结基团;并且X可以与A1、A2、R1至R6或L结合形成分子内盐。这些材料对具有长波长的光谱敏感,但是通式(I)的染料具有相对较短的亚甲基链。