X-ray silver halide photographic material suitable for maintenance in bright darkroom lighting conditions

摘要

The above objects are accomplished by a silver halide photographic material for industrial radiography comprising a film support and on one or both sides thereof at least one gelatino silver halide emulsion layer wherein each silver halide emulsion layer comprises as silver halide crystals silver chloride and/or silver chlorobromide crystals the amount of bromide therein being at most 25 mole %; has a gelatin to silver halide (expressed as silver nitrate) ratio from 2:10 to 6:10 and has an amount of silver halide corresponding to from 5 g to 15 g of silver per m<2> and wherein said photographic material has been fore-hardened to such an extent that when it is immersed in demineralised water of 25 DEG C for 3 minutes there is absorbed less than 2.5 g of water per gram of gelatin, characterised in that said silver chloride or silver chlorobromide emulsion crystals are chemically ripened in the presence of at least one sulphur compound and at least one gold compound, wherein gold is present in an amount from 0.01 to 1 mu mole per mole of silver halide, the molar ratio of sulphur to gold being less than 1.0.