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1. 发明公开

EP0198575A3 Silver image enhancement composition and process for use thereof 失效
标题翻译：银图像增强组合物及其使用方法
公开(公告)号：EP0198575A3
公开(公告)日：1988-01-27
申请号：EP86300845
申请日：1986-02-07
申请人： MINNESOTA MINING AND MANUFACTURING COMPANY
发明人： Boston, David R. Minnesota Mining and Manufac. Co.
IPC分类号： G03C05/42 , G03C05/54 , G03F07/06
CPC分类号： G03C5/42 , G03C8/00 , G03F7/063
摘要： This invention relates to a composition and process for enhancing silver images, and, more particularly, for enhancing photographically produced silver images for use in lithography. In the silver salt diffusion transfer process, an imagewise exposed silver halide emulsion layer is positioned in intimate contact with a receptor element and developed with a silver halide developing composition in the presence of a solvent for silver halide such that the unexposed silver halide is dissolved and subsequently diffuses into the receptor element. Development nuclei, or catalyst, contained in the receptor element, cause the diffusing silver halide to be reduced (i.e., developed) to metallic silver, thereby forming an image on the surface of the receptor element. One shortcoming of the silver diffusion transfer process is that a substantial level of silver halide is required to provide a positive silver image of sufficient oleophilicity to function as a lithographic plate. Another shortcoming is that there is often insufficent oleophilic/hydrophilic differential between the image areas and background areas of the lithographic plate. This invention involves a composition for enhancing silver images comprising an oxidizing agent for metallic silver and a silver ion insolubilizing agent which react with photographically produced silver deposits. The composition is particularly useful in enhancing the lithographic utility of photographically produced silver deposits which function as the inkable image area of lithographic printing plates.

2. 发明公开

EP0012010A3 Photographic image enhancement method employing luminescence 无效
标题翻译：摄影图像增强方法使用发光
公开(公告)号：EP0012010A3
公开(公告)日：1980-06-25
申请号：EP79302713
申请日：1979-11-28
申请人： SRI INTERNATIONAL , AUSTRALIAN ATOMIC ENERGY COMMISSION
发明人： Pettijohn, Richard , Leung, Charles , Manning, Ronald G. , Reyes, Zoila , Thackray, Malcolm
IPC分类号： G03C05/42 , G03G09/08 , G03C05/40
CPC分类号： G03C5/42 , Y10S430/146
摘要： A method of enhancing photographic images of low optical density is disclosed which includes use of a luminescent system, the components of which system include, at least, luminescent material (10,40) and means for exciting the same to luminescence (12, 26). The luminescent system may include a catalyst, the presence of which may be required for luminescence of the system. A replica (50) of the low optical density photographic image is produced which includes at least one component of the luminescent system. The replica is exposed to at least another component of the luminescence system (14) required for luminescence at the image replica. The resultant luminescent image is recorded, or photographed (20), for an amount of time necessary to achieve enhancement of the photographic film image. The luminescent system employed may be of any suitable type, including photoluminescence and chemiluminescence (51) types. Also, -the image enhancement method may be used for the enhancement of photographic images produced by photographic processes including, for example, those which involve the use of different radiant energy sensitive material such as silver halide as used in 'conventional' photography, photoconductive material as used in electrophotography, organic compounds as used in diazo photographic processes, and the like.
摘要翻译：公开了一种增强低光密度的摄影图像的方法，其包括使用发光系统，其系统的组件至少包括光致发光材料和用于将其激发至发光的光子源。产生低光密度照相图像的光致发光复制品，其复制品暴露于在实现增强照相胶片图像所需的时间内记录或拍摄发光的光致发光图像复制品的发光所需的光子。图像增强方法可以用于增强通过摄影过程产生的照相图像，包括例如使用不同的辐射能敏感材料如卤化银，如在“常规”摄影中使用的光导材料，如电子照相术，用于重氮摄影过程的有机化合物等。

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