Dyes are described corresponding to the following formula for use as light-absorbing dyes in silver halide photographic material: ##STR1## wherein: Z represents the atoms necessary to form a barbituric acid nucleus (p=1 or 2), a phenyl group (p=0 or 1) or a pyrrole ring (p=0) Each of L.sup.1, L.sup.2 and L.sup.3 represents a methine group, R.sup.3 represents an aliphatic or aromatic hydrocarbon group, R.sup.1 represents hydrogen, alkyl, acyl or amino and R.sup.2 represents hydrogen, alkyl or aryl, or R.sup.1 together with R.sup.2 represents the atoms necessary to complete a heterocycle.
以下是用于
银盐摄影材料中作为吸光
染料的
染料,其描述对应以下公式:##STR1## 其中:Z代表形成
巴比妥酸核(p=1或2)、苯基(p=0或1)或
吡咯环(p=0)所需的原子。L1,
L2和L3中的每一个代表一个
甲烷基,R3代表脂肪或芳香族烃基,R1代表氢、烷基、酰基或
氨基,R2代表氢、烷基或芳香族基,或者R1和R2一起代表完成一个杂环所需的原子。