Color photographic recording material processing
AssigneeEastman Kodak Company
InventorsEric R. Schmittou, Allan F. Sowinski
Life of this patent
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Abstract
A method of processing a color negative photographic recording material containing tabular grain silver halide emulsion units wherein the fixing agent comprises an aqueous solution of thiosulfate with low ammonium concentration. The silver halide emulsion in at least one of the units comprises grains having a tabularity of between about 50 and 25,000. The photographic recording material has a silver coverage of less than about 7.0 g/m.sup.2, and an iodide coverage of less than about 0.35 g/m.sup.2. The fixing bath has an ammonium concentration of less than about 1.2 molar, and ammonium may be absent entirely.
Claims7
An image forming process for a color negative recording material comprising a support and at least one silver halide emulsion imaging unit sensitive to a region of the electromagnetic spectrum, said unit containing a dye-forming coupler, and at least one high tabularity silver halide emulsion sensitive to light, wherein:
- a) said unit contains from about 0.2 to 3.0 g/m.sup.2, based on silver, of a silver halide emulsion in which greater than 50% of the projected surface area is provided by tubular grains having a tabularity between 50 and 25,000;
- b) said unit has an iodide content between 0 and 40 mole percent;
- c) said color recording material has a silver halide content of less than about 7.0 g/m.sup.2, based on silver;
- d) said color recording material has an iodide content of less than about 0.35 g/m.sup.2 ;
- e) said color recording material has a positive contrast of 0.9 or less when the recording material is exposed and processed;
- said process comprising subjecting said color negative recording material to color development and subsequently fixing the developed material in a fixer bath which has a thiosulfate concentration from about 0.05 to about 3.0 molar and has an ammonium concentration of 0.0 to about 1.2 molar.
Dependencies are inferred from the claim text.