Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Patent
1996-07-15
1998-07-21
Chea, Thorl
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
430401, 430507, 430567, 430605, 430621, 430963, 430966, G03C 1815, G03C 516
Patent
active
057833796
ABSTRACT:
A silver halide photographic material for industrial radiography is disclosed 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.sup.2 and wherein said photographic material has been fore-hardened to such an extent that when it is immersed in demineralized water of 25.degree. C. for 3 minutes there is absorbed less than 2.5 g of water per gram of gelatin, characterized 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.
REFERENCES:
patent: 3658547 (1972-04-01), Shiba et al.
patent: 5380634 (1995-01-01), Kiekens et al.
patent: 5397687 (1995-03-01), Willems et al.
patent: 5434033 (1995-07-01), Kawai
patent: 5447826 (1995-09-01), Heremans et al.
Henderickx Freddy
Willems Peter
Agfa-Gevaert N.V.
Chea Thorl
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