公开(公告)号：US4485164A

公开(公告)日：1984-11-27

申请号：US511080

申请日：1983-07-06

申请人： Eugene A. Armour ,  Jal F. Munshi

发明人： Eugene A. Armour ,  Jal F. Munshi

IPC分类号： G03C7/00 ,  G03C8/00 ,  G03C8/08 ,  G03C5/54 ,  G03C1/40

CPC分类号： G03C8/00 ,  G03C8/08

摘要： Photographic elements and assemblages are described employing positive-working redox dye-releasers, wherein the element contains an oxidant which is located between the support and the photosensitive portion thereof. The oxidant has an electrode potential of from about -200 mV up to about 1200 mV versus a saturated calomel electrode at a pH of about 5 to about 6. After processing, the oxidant reacts with the electron transfer agent to prevent it from reacting with the dye releaser which would otherwise cause further dye release. The reduced form of the oxidant is then substantially incapable of reducing the positive-working redox dye-releaser. D.sub.min stability is thereby improved.

摘要翻译： 使用正性氧化还原染料释放剂描述照相元件和组合物，其中元件含有位于载体和感光部分之间的氧化剂。 氧化剂的电极电位为约-200mV至约1200mV，相对于pH为约5至约6的饱和甘汞电极。处理后，氧化剂与电子转移剂反应以防止其与 染料释放剂，否则会导致染料释放。 然后氧化剂的还原形式基本上不能减少正性的氧化还原染料释放剂。 从而提高了Dmin的稳定性。

公开(公告)号：US5298369A

公开(公告)日：1994-03-29

申请号：US76334

申请日：1993-06-14

申请人： Jal F. Munshi ,  Henry J. Sniadoch ,  Richard C. Tuites

发明人： Jal F. Munshi ,  Henry J. Sniadoch ,  Richard C. Tuites

IPC分类号： G03C5/50 ,  G03C7/30 ,  G03C1/09 ,  G03C1/494

CPC分类号： G03C7/3029 ,  G03C5/50

摘要： When color reversal materials are developed by a process that comprises prolonged contact with the first, or black-and-white developer, images with a color mismatch or speed deficiency can occur. Such undesirable results can be reduced or eliminated by including in the reversal material, a layer of colloidal elemental silver. The layer can be adjacent to a light sensitive, silver halide-containing layer, which is present within a color record who's speed is to be increased in order to reduce the color mismatch. The amount of colloidal elemental silver employed is less than that used in the art to protect an underlying light sensitive, silver halide layer from exposure by unwanted light.

摘要翻译： 当通过包括与第一或黑白显影剂的长时间接触的方法显影颜色反转材料时，可能发生颜色失配或速度不足的图像。 通过在反转材料中包含胶体元素银层可以减少或消除这种不合需要的结果。 该层可以与含有感光性卤化银的层相邻，该层存在于彩色记录中，其速度将被增加以减少颜色失配。 使用的胶态元素银的量小于本领域中所用的量，以保护下面的光敏卤化银层不受不需要的光的照射。

公开(公告)号：US4965183A

公开(公告)日：1990-10-23

申请号：US253835

申请日：1988-10-05

申请人： John D. Mee ,  Jal F. Munshi

发明人： John D. Mee ,  Jal F. Munshi

IPC分类号： G03C1/12 ,  C09B23/00 ,  C09B23/01 ,  C09B23/16 ,  G03C1/26

CPC分类号： G03C1/26 ,  C09B23/0075

摘要： Compounds of the formulaa: ##STR1## where Z.sub.1, Z.sub.2, L.sub.1 -L.sub.5, R.sub.1, R.sub.2, R.sub.3, m, and n are as defined herein are disclosed. A method of making the componds is also disclosed. the compounds are useful as sensitizing dyes in photographic elements.