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1. 发明授权

US4264716A Photographic color developer compositions 失效
标题翻译：摄影彩色显影剂组合物
公开(公告)号：US4264716A
公开(公告)日：1981-04-28
申请号：US73770
申请日：1979-09-10
申请人： Sheridan E. Vincent , Michael D. Purol
发明人： Sheridan E. Vincent , Michael D. Purol
IPC分类号： G03C7/30 , G03C7/413 , G03C5/30 , C02F5/10 , C11D17/00 , G03C7/16
CPC分类号： G03C7/413
摘要： Photographic color developer compositions containing a primary aromatic amino color developing agent and an hydroxylamine are stabilized by incorporating therein a combination of sequestering agents, one of which is an aminopolyphosphonic acid compound and another of which is an aromatic polyhydroxy compound. Decomposition of the hydroxylamine, in the presence of heavy metals such as iron which act to catalyze the decomposition, and resultant formation of ammonia is effectively prevented by the presence in the developer composition of this combination of sequestering agents. Undesirable precipitate formation is also effectively avoided.
摘要翻译：含有伯芳香族氨基显色剂和羟胺的摄影彩色显影剂组合物通过掺入多价螯合剂的组合而稳定化，其中一种是多氨基膦酸化合物，另一种是芳族多羟基化合物。在这种多价螯合剂组合的显影剂组合物中，通过存在显影剂组合物中的羟胺的分解，在存在催化分解作用的催化分解的重金属如铁的情况下，以及由此形成的氨被分解。也有效地避免了不希望的沉淀物形成。

2. 发明授权

US5264323A Photographic developing solution and use thereof in the high contrast development of nucleated photographic elements 失效
标题翻译：摄影显影液及其在成像照相元件的高对比度发展中的应用
公开(公告)号：US5264323A
公开(公告)日：1993-11-23
申请号：US990350
申请日：1992-12-14
申请人： Michael D. Purol , Paul A. Zielinski , Donald L. Kerr
发明人： Michael D. Purol , Paul A. Zielinski , Donald L. Kerr
IPC分类号： G03C5/30 , G03C1/06
CPC分类号： G03C5/30
摘要： An improved photographic developing solution is free of dihydroxybenzene developing agents such as hydroquinone, has a pH in the range of from 9.5 to 11.5 and comprises (1) an ascorbic acid developing agent, (2) an auxiliary super-additive developing agent and (3) a carbonate buffering agent in a concentration of at least 0.5 molar. The developing solution is broadly useful in black-and-white development but is most advantageously employed in a process for forming a high-contrast image utilizing a silver halide photographic element comprising a hydrazine compound which functions as a nucleating agent and an amino compound which functions as an incorporated booster. The developing solution is ecologically advantageous, exhibits excellent stability with respect to seasoning effects, and provides high speed and good upper scale contrast combined with a low level of pepper fog and a moderate degree of chemical spread.
摘要翻译：改进的照相显影溶液不含二氢苯显影剂如氢醌，其pH值在9.5至11.5范围内，并包含（1）抗坏血酸显影剂，（2）辅助超添加剂显影剂和（3 ）浓度为至少0.5摩尔的碳酸盐缓冲剂。显影溶液在黑白显影中广泛有用，但最有利地用于利用卤化银照相元件形成高对比度图像的方法，所述卤化银照相元件包含用作成核剂的肼化合物和起作用的氨基化合物作为并入增强器。开发的解决方案在生态上是有利的，在调味作用方面表现出优异的稳定性，并提供高速度和良好的上限对比度以及低水平的胡椒雾和中等程度的化学传播。

3. 发明授权

US5236816A Photographic developing solution and use thereof in the high contrast development of nucleated photographic elements 失效
标题翻译：摄影显影液及其在成像照相元件的高对比度发展中的应用
公开(公告)号：US5236816A
公开(公告)日：1993-08-17
申请号：US866604
申请日：1992-04-10
申请人： Michael D. Purol , Paul A. Zielinski , Donald L. Kerr
发明人： Michael D. Purol , Paul A. Zielinski , Donald L. Kerr
IPC分类号： G03C1/06 , G03C1/295 , G03C1/42 , G03C5/29 , G03C5/30 , G03C5/305
CPC分类号： G03C5/30
摘要： An improved photographic developing solution is free of dihydroxybenzene developing agents such as hydroquinone, has a pH in the range of from 9.5 to 11.5 and comprises (1) an ascorbic acid developing agent, (2) an auxiliary super-additive developing agent and (3) a carbonate buffering agent in a concentration of at least 0.5 molar. The developing solution is broadly useful in black-and-white development but is most advantageously employed in a process for forming a high-contrast image utilizing a silver halide photographic element comprising a hydrazine compound which functions as a nucleating agent and an amino compound which functions as an incorporated booster. The developing solution is ecologically advantageous, exhibits excellent stability with respect to seasoning effects, and provides high speed and good upper scale contrast combined with a low level of pepper fog and a moderate degree of chemical spread.

4. 发明授权

US5500125A Process for recycling photographic wash water 失效
公开(公告)号：US5500125A
公开(公告)日：1996-03-19
申请号：US245797
申请日：1994-05-19
申请人： Richard R. Horn , Christine K. Gaskell , Susan R. Krauss , Michael D. Purol
发明人： Richard R. Horn , Christine K. Gaskell , Susan R. Krauss , Michael D. Purol
IPC分类号： G03C5/00 , C02F1/42 , C02F1/72 , G03C5/395 , C02F9/00
CPC分类号： G03C5/395 , Y10S210/912 , Y10S210/917
摘要： A method of treating photoprocessing wash water, comprising in sequence, the steps of:A) contacting the wash water with an acrylic anion exchange resin to remove silver thiosulfate complex in the water; andB) contacting the water from step A) with an oxidizing agent that converts thiosulfate ions to sulfate ions.C) recirculating continuously through the photoprocessing wash tank and steps A) and B).

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