Abstract: A colour photographic silver halide material comprising a support and at least one silver halide emulsion layer which is deposited thereon and which contains at least one colour coupler, characterised in that said layer also contains a compound of formula (I) wherein R1 denotes alkyl, aryl, aralkyl or hetaryl, R2 denotes H or R1, or R1 and R2 together denote the remaining members of a heterocyclic ring, R3, R4, independently of each other, denote aryl or hetaryl or together denote the remaining members of a phenanthrene ring which is condensed-on in the 9,10-position, wherein R1 can also be H if R3 and R4 together form a phenanthrene ring, is distinguished by improved granularity.

Abstract: A color photographic silver halide material containing gelatine, comprising a support and at least one photosensitive silver halide emulsion layer and at least one non-photosensitive layer, which material contains at least one compound of the formula (I) or (II) and is hardened with a vinylsulfonyl compound in which R1, R2, R3, m and n have the meanings stated in the description and wherein two residues R2 or R3 may in each case mean a fused carbo- or heterocyclic ring or the compound of the formula I is attached to a polymer chain via one of the residues R1, R2 or R3, in which R11, R12, R13, R14, o and p have the meanings stated in the description wherein two residues R13 or R14 may in each case mean a fused carbo- or heterocyclic ring or the compound of the formula II is attached to a polymer chain via a residue R13 or R14, is distinguished by improved storage stability.

Abstract: A radiographic film material is described including a transparent film support having first and second major surfaces coated with a subbing layer, optionally overcoated with an antihalation undercoat. Coated adjacent on each side of the film support is a light-sensitive silver halide emulsion overcoated with a protective antistress layer. The emulsion layer has chemically and spectrally sensitized {111} tabular hexagonal grains or crystals, having silver iodide in an amount of at most 3 mole %, based on silver, covering at least 50% of the total projective surface of all grains, having an average grain thickness of less than 0.30 &mgr;m. The antistress layer, or the optional antihalation undercoat or both includes a N-amino mercapto-triazole compound containing one or more alkali soluble group(s). A radiographic screen/film combination is also described including the film material.

Abstract: The production of tabular silver bromide-iodide emulsions and silver bromide-chloride-iodide emulsions with an aspect ratio 32, an iodide content from 1 to 40 mol % and a chloride content from 0 to 20 mol %, by the process steps of (a) silver halide nucleus precipitation, and (b) at least one further precipitation of silver halide, wherein rein at least one aromatic five- or six-membered, heterocyclic compound, which is free from—SH—,—SSO2H— and—SSO2R groups, is added in an amount from 10−9 to 10−4 mol/mol silver during nucleus precipitation or during the precipitation of an inner zone of the silver halide grain which is different from the nucleus precipitate, results in an improved speed/grain size ratio and in an increased stability of a photographic material which contains an emulsion produced in this manner.

Abstract: A color photographic material having a support and at least one light-sensitive silver halide emulsion layer and at least one color coupler associated with the latter, wherein the silver halide emulsion layer contains at least one compound of formula (I) wherein m denotes 0, 1, 2, 3 or 4, n denotes 2, 3, 4, 5 or 6, R1 denotes a di- to hexavalent group, R2 denotes alkyl, alkenyl, cycloalkyl, aryl, alkoxy, aryloxy, alkylthio, arylthio, acyl, alkoxycarbonyl, aryloxycarbonyl, hydroxy, halogen, cyano, —SO2R5, —SOR5, —CON(R5)R6 or —SO2N(R5)R6, L1 denotes alkylene, arylene, aralkylene or alkylidene, L2 denotes L3, L4 denote a C1-C3 alkylene which is optionally substituted, R5 denotes alkyl or aryl, and R6 denotes H or R5, wherein L2 and X are as defined in the specification, is distinguished b improved stability to light.