公开(公告)号：US5424181A

公开(公告)日：1995-06-13

申请号：US213350

申请日：1994-03-15

申请人： Philippe Strauel ,  Gerard A. Friour

发明人： Philippe Strauel ,  Gerard A. Friour

IPC分类号： G03C1/005 ,  G03C1/015 ,  G03C1/035

CPC分类号： G03C1/015 ,  G03C1/0051 ,  G03C1/035

摘要： The invention concerns a process for obtaining emulsions of the core/shell type having a low fog level.The process consists of precipitating, by the double jet method, a photographic emulsion comprising core-shell silver halide grains, the concentrations of halides varying progressively during at least the formation of the core.Application to reversal or negative photographic products is disclosed.

摘要翻译： 本发明涉及一种获得具有低雾度水平的核/壳型乳液的方法。 该方法包括通过双喷射法沉淀包含核 - 壳卤化银颗粒的照相乳剂，卤化物的浓度在至少形成核心期间逐渐变化。 公开了对逆转或负照相产品的应用。

公开(公告)号：US5972590A

公开(公告)日：1999-10-26

申请号：US811751

申请日：1997-03-06

申请人： Gerard A. Friour ,  Francoise M. Thomas

发明人： Gerard A. Friour ,  Francoise M. Thomas

IPC分类号： G03C1/16 ,  G03C1/28 ,  G03C1/815 ,  G03C5/16 ,  G03C5/17 ,  G03C1/14

CPC分类号： G03C1/16 ,  G03C1/8155 ,  G03C1/28 ,  G03C5/16 ,  G03C5/17 ,  Y10S430/134 ,  Y10S430/167

摘要： The present invention concerns a radiographic product which makes it possible to obtain an image with no residual yellow coloring. The radiographic product comprises at least one photosensitive silver halide tabular grain emulsion spectrally sensitized with a spectral sensitizing dye in the blue region having an emission peak between 400 and 500 nm, and an optical brightener derived from 4,4'-diaminostilbene disulfonic acid having at least three anionic sulfo groups, put in the photosensitive layer of the radiographic products or in at least one layer situated between the photo-sensitive layer and the support. The radiographic product is applicable to radiographic systems including one or two intensifying screens.

摘要翻译： 本发明涉及一种能够获得没有残余黄色着色的图像的射线照相产品。 该射线照相产品包括至少一种光敏卤化银片状颗粒乳剂，其光谱增感染料在蓝色区域具有400-500nm的发射峰，以及衍生自4,4'-二氨基芪二磺酸的荧光增白剂，其具有 至少三个阴离子磺基，放入射线照相产品的感光层或位于光敏层和载体之间的至少一层中。 射线照相产品适用于包括一个或两个增强屏幕的射线照相系统。