| 摘要 |
PURPOSE:To suppress deterioration due to the lapse of time and to prevent lowering of the max. density by adding a water-soluble iodide to an ammoniacal silver halide emulsion contg. a soluble rhodium salt and silver iodide, and than, incorporating a reducing agent, a thiosulfate, etc., to fog the emulsion. CONSTITUTION:The water-soluble iodide is added to an ammoniacal silver halide emulsion contg. a soluble rhodium salt, such as rhodium halide or haxahalorhodium comples salt, in an amt. of 0.001-100 millimol per mol of silver halide, and 2-8mol% silver iodide in an amt. of 1-10 millimol per mol of silver halide, and then, a reducing agent, for example, an org. compd., such as formalin or other aldehyde, or an org. amine or an inorg. compd., such as stannous chloride, in an amt. of 0.001-1.00 millimol per mol of silver halide, and a thiosulfate and/or a thiocyanate, and a golden compd. are added to fog the emulsion. |
