发明名称 METHODS AND MATERIALS FOR REPLENISHMENT OF DEVELOPERS FOR COLOR PHOTOGRAPHIC FILMS (B)
摘要 Developer replenishers having buffer controlled high pH and high potassium/sodium weight ratio are effective at low-replenishment rates; for example, developer replenishers having a pH of 10.5 to 11 containing a potassium/sodium weight ratio of at least 5.4/1,p-phenylenediamine developing agent and benzyl alcohol in weight ratio of between about 1/1.5 and 1/2 and sulfite are especially effective. Such replenishers are advantageously prepared from kits comprising at least two solutions, one a buffered aqueous alkaline solution containing alkali metal ions in a high potassium/sodium weight ratio and another an aqueous solution having low pH and containing p-phenylenediamine developing agent in high concentration. The replenishers are utilized in conjunction with the processing of imagewise exposed, multilayer, incorporated coupler, silver halide sensitized, color photographic film materials.
申请公布号 US3647462(A) 申请公布日期 1972.03.07
申请号 USD3647462 申请日期 1969.02.19
申请人 EASTMAN KODAK CO. 发明人 JOHN J. SURASH;EDWARD J. GIORGIANNI;LYNN R. HOTTER
分类号 G03C7/44;(IPC1-7):G03C5/30 主分类号 G03C7/44
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