Patent ID: 7129031

Claim:
A black-and-white silver halide negative working photographic material comprising a subbed transparent support, and, in order, at one or both sides thereof, at least one light-sensitive silver halide emulsion layer, and a protective layer, wherein said material is spectrally sensitized in the wavelength range from 540–570 nm, wherein at least one light-sensitive emulsion layer thereof comprises tabular grains having a thickness in the range from 0.04 μm up to 0.20 μm, wherein said grains having an aspect ratio in the range from 5:1 up to 50:1 represent a projective surface area of at least 70% of the total projected surface of all grains present in the emulsion and wherein said material comprises at least one compound according to general formula (I): wherein: X represents a functional group containing sulfur, apart from a thiol group or a thiolate; Y is selected from the group consisting of an oxygen atom, a sulfur atom, NR 2 , R 1 is selected from the group consisting of hydrogen, a heteroatomic group, an aryl or heteroaryl group, S—R 7 and NR 8 R 9 ; R 2 , R 5 , R 6 and R 7 are selected from the group consisting of hydrogen, an aliphatic or heteroatomic group, an aryl or heteroaryl group provided that R2 is not —NR 3 R 4 or —N═CR 5 R 6 ; R 3 , R 4 , R 8 and R 9 are selected from the group consisting of hydrogen, an aliphatic or heteroatomic group; an aryl or heteroaryl group, an acyl group, a sulphonyl group and a phosphoryl group; wherein any of R 3 and R 4 , R 5 and R 6 , R 8 and R 9 may represent atoms necessary to form a five to eight membered, and wherein R 1 and Y may form a five to eight membered ring, further characterized in that at least one of Y and R 1 is substituted by a solubilizing group having a pK a of 10 or less.