公开(公告)号：US5543276A

公开(公告)日：1996-08-06

申请号：US255512

申请日：1994-06-08

Applicant: Krishnan Chari ,  Wendell F. Smith, Jr. ,  Paul P. Spara ,  Sundaram Krishnamurthy

Inventor： Krishnan Chari ,  Wendell F. Smith, Jr. ,  Paul P. Spara ,  Sundaram Krishnamurthy

IPC: C07D303/16 ,  C07D303/22 ,  C07D303/34 ,  C07D303/42 ,  C07D303/46 ,  C07D405/12 ,  C07F5/02 ,  C07F9/655 ,  G03C1/005 ,  G03C7/392 ,  G03C1/34

CPC classification number: C07D303/22 ,  C07D303/16 ,  C07D303/34 ,  C07D303/42 ,  C07D303/46 ,  C07D405/12 ,  C07F5/025 ,  C07F9/65502 ,  G03C1/005 ,  G03C7/39268 ,  G03C7/39296

Abstract: Thermal and photochemical yellowing of a color photographic element, such as a color print, is inhibited by incorporating into the photographic element an ionizable epoxy compound having the formula: ##STR1## wherein: R is H, alkyl, substituted alkyl, aryl, or substituted aryl;L.sub.1 is alkyl, substituted alkyl, aryl, or substituted aryl;L.sub.2 is O, CO, S, SO.sub.2, PO.sub.2, C(O)O, NHCO or NHSO.sub.2 ;L.sub.3 is alkyl or substituted alkyl;m is 0 or 1;p is 0 or 1;X is selected from the group consisting of ##STR2## wherein: R' is H, alkyl, substituted alkyl, aryl or substituted aryl,or, if L.sub.2 comprises an ionizable group, X is alkyl, substituted alkyl, aryl or substituted aryl.

Abstract translation: 彩色照相元件如彩色印刷品的热和光化学黄化通过将具有下列通式的可离子化环氧化合物加入到照相元件中：kyl，芳基或取代的芳基; L 1是烷基，取代的烷基，芳基或取代的芳基; L2是O，CO，S，SO2，PO2，C（O）O，NHCO或NHSO2; L3是烷基或取代的烷基; m为0或1; p为0或1; X选自 ，其中：R'是H，烷基，取代的烷基，芳基或取代的芳基，或者如果L2包含可离子化基团，则X是烷基，取代的烷基，芳基或取代的 芳基。

公开(公告)号：US5508147A

公开(公告)日：1996-04-16

申请号：US431

申请日：1993-01-04

Applicant: Krishnan Chari ,  Wendell F. Smith ,  Sundaram Krishnamurthy

Inventor： Krishnan Chari ,  Wendell F. Smith ,  Sundaram Krishnamurthy

IPC: G03C7/30 ,  G03C7/38 ,  G03C7/388 ,  G03C7/392 ,  G03C7/407 ,  G03C7/413 ,  G03C11/00

CPC classification number: G03C7/3008 ,  G03C7/3029 ,  G03C7/3885 ,  G03C7/413

Abstract: Yellowing of a processed photographic element is inhibited by incorporating a scavenger comound capable of reacting with magenta coupler, e.g. an epoxy compound, in a layer adjacent a layer containing the magenta coupler. In a preferred embodiment, the magenta coupler containing layer is sandwiched between layers containing the scavenger compound. Prior to processing at least one of these layers contains a solubilizing agent for the scavenger compound. In preferred embodiments, the processing solution used to process the photographic element containing an external solubilizing agent for the scavenger compound, preferably benzyl alcohol.

Abstract translation: 通过加入能够与品红色成色剂反应的清除剂组合物，例如， 在邻近包含品红色成色剂的层的层中的环氧化合物。 在优选的实施方案中，含有红紫色成色剂的层夹在含有清除剂化合物的层之间。 在加工之前，这些层中的至少一层含有用于清除剂化合物的增溶剂。 在优选的实施方案中，用于处理含有用于清除剂化合物的外部增溶剂的照相元件的处理溶液，优选苄醇。

公开(公告)号：US5451497A

公开(公告)日：1995-09-19

申请号：US175824

申请日：1993-12-30

Applicant: David D. Miller ,  Krishnan Chari

Inventor： David D. Miller ,  Krishnan Chari

IPC: G03C7/388 ,  G03C1/08

CPC classification number: G03C7/3882 ,  Y10S516/01 ,  Y10S516/06

Abstract: The tendency of a photographically useful compound (PUC) to crystallize when dispersed in an aqueous medium is inhibited by codispersing with the PUC a non-color forming, oil-soluble, monomeric or oligomeric organic compound having a glass transition temperature between 0.degree. and 150.degree. C. Preferred organic compounds are oil-soluble sucrose esters, such as sucrose octaacetate, and rosin and derivatives thereof.

Abstract translation: 当PUC分散在水性介质中时，照相用化合物（PUC）结晶的趋势通过将PUC与玻璃化转变温度在0至150℃之间的非成色型油溶性单体或低聚有机化合物进行共混来抑制 优选的有机化合物是油溶性蔗糖酯，例如蔗糖八乙酸酯，以及松香及其衍生物。

公开(公告)号：US5190851A

公开(公告)日：1993-03-02

申请号：US631607

申请日：1990-12-21

Applicant: Krishnan Chari ,  John T. Keech ,  John F. Sawyer ,  Jeffrey W. Schmoeger ,  Paul L. Zengerle

Inventor： Krishnan Chari ,  John T. Keech ,  John F. Sawyer ,  Jeffrey W. Schmoeger ,  Paul L. Zengerle

IPC: G03C1/035 ,  G03C7/20 ,  G03C7/30 ,  G03C7/32 ,  G03C7/388

CPC classification number: G03C7/3029

Abstract: A color photographic silver halide negative working duplicating element comprising a support having thereon at least one red-sensitive photographic silver halide emulsion layer comprising at least one cyan image-dye forming coupler; at least one green-sensitive photographic silver halide emulsion layer comprising at least one magenta image-dye forming coupler; and, at least one blue-sensitive photographic silver halide emulsion layer comprising at least one yellow image-dye forming coupler, provides improved images when (a) at least one of the layers comprises a unit of at least two layers including a first layer and a second layer, the first layer having a higher photosensitivity than the second layers and being farther from the support than the second layers; (b) the first layers contain an image-dye forming coupler in an amount insufficient to react with all the oxidized developer formed during development after maximum exposure; (c) the image-dye forming couplers of the first layers being in a dispersion having a mean particle size of less than 0.14 micron; and, (d) the silver halide grains of the first layers having a mean grain volume less than 0.015 cubic micron. Such a photographic element is especially useful in motion picture film duplication providing reduction in granularity of the image.

Abstract translation: 一种彩色摄影卤化银负性复制元件，包括其上具有至少一种红色感光性照相卤化银乳剂层的载体，其包含至少一种形成青色影像的成色剂; 至少一种感光卤化银乳剂层，其至少包含至少一种品红色成像成色剂; 和至少一种含有至少一种黄色成像成色剂的感光性感光卤化银乳剂层，当（a）至少一层包含至少两层包含第一层和第二层的单元时，提供改进的图像 第二层，所述第一层具有比所述第二层更高的光敏性，并且比所述第二层更远离所述载体; （b）第一层含有图像染料形成成色剂，其数量不足以在最大曝光后在显影过程中形成的所有氧化显影剂反应; （c）第一层的图像染料形成成色剂在平均粒径小于0.14微米的分散体中; 和（d）第一层的卤化银颗粒的平均颗粒体积小于0.015立方微米。 这种照相元件在电影胶片复制中特别有用，从而降低了图像的粒度。