Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Antihalation or filter layer containing
Patent
1992-09-17
1993-08-24
Brammer, Jack P.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Antihalation or filter layer containing
430510, 430512, 430517, G03C 106
Patent
active
052387992
ABSTRACT:
Disclosed is a silver halide photographic material having a hydrophilic colloid layer which contains a dispersion of fine solid grains of at least one dye of formula (I): ##STR1## where R.sub.1 and R.sub.2 each represents an alkyl group, an aryl group, a cyano group or a group of COOR.sub.3, COR.sub.3, CONR.sub.4 R.sub.5, NR.sub.4 R.sub.5, NR.sub.4 COR.sub.3, NR.sub.4 CONR.sub.4 R.sub.5, OR.sub.3, SR.sub.3, SOR.sub.3 or SO.sub.2 R.sub.3 ; R.sub.3 being an alkyl group or an aryl group, and R.sub.4 and R.sub.5 each being a hydrogen atom, an alkyl group or an aryl group, and R.sub.3 and R.sub.4 or R.sub.4 and R.sub.5 being optionally bonded to each other to form a 5-membered or 6-membered ring; L.sub.1, L.sub.2 and L.sub.3 each represents a methine group; and n represents 0 or 1; provided that R.sub.1, R.sub.2, L.sub.1, L.sub.2 and L.sub.3 must not have an ionizable proton-having group or a salt thereof. The material preferably has, in addition to the dispersion of fine solid grains of at least one dye of formula (I), a dispersion of fine solid grains of at least one dye of formula (II): ##STR2## where R.sub.21 and R.sub.23 each represents a hydrogen atom, an alkyl group or an aryl group; R.sub.22 and R.sub.24 each represents an alkyl group, an aryl group, or a group of OR.sub.26, COOR.sub.26, COR.sub.25, SR.sub.26, SOR.sub.25, SO.sub.2 R.sub.25, CONR.sub.26 R.sub.27, NR.sub.26 COR.sub.25, NR.sub.26 CONR.sub.26 R.sub.27 or NR.sub.25 R.sub.26, or a cyano group; R.sub.25 being an alkyl group or an aryl group, and R.sub.26 and R.sub.27 each being a hydrogen atom, an alkyl group or an aryl group, and R.sub.25 and R.sub.26 or R.sub.26 and R.sub.27 being optionally bonded to each other to form a 5-membered or 6-membered ring; and L.sub.21, L.sub.22 and L.sub.23 each represents a methine group; provided that the formula has at least one aryl group having at least one substituent selected from the group consisting of a carboxylic acid group, a sulfonamide group and an arylsulfamoyl group except for the case where R.sub. 21 and R.sub.23 are both hydrogen atoms. The dyes (I) and (II) color only a hydrophilic colloid layer containing them, and they do not diffuse to any other layers during storage of the material. After developed, the dyes (I) and (II) are rapidly decolored.
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Idogaki Yoko
Ohno Shigeru
Usami Takashi
Brammer Jack P.
Fuji Photo Film Co. , Ltd.
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