-
公开(公告)号：US3794496A
公开(公告)日：1974-02-26
申请号：US3794496D
申请日：1972-05-26
申请人： ITEK CORP
发明人： MANHARDT J
CPC分类号： G03C1/498
摘要： AN IMAGING MEDIUM COMPRISES A PHOTOSENSITIVE LAYER COMPRISING A RADIATION-SENSITIVE SILVER HALIDE SALT WHICH UPON EXPOSURE TO AN IMAGE PATTERN OF ACTIVATING RADIATION PRODUCES A CATALYST CAPABLE OF ACCELERATING THE DECOMPOSITION OF A DECOMPOSABLE METAL COMPOUND AND AN IMAGE-FORMING MATERIAL COMPRISING THE DECOMPOSABLE METAL COMPOUND. THE EXPOSED PHOTOSENSITIVE LAYER MAY BE DEVELOPED BY HEATING, BY EXPOSURE TO ELECTROMAGNETIC RADIATION OR BY MERELY PROLONGING THE INITIAL EXPOSURE TO AN IMAGE PATTERN OF ACTIVATING RADIATION. EXAMPLES OF SUITABLE IMAGE FORMING MATERIALS ARE METAL COMPLEXES SUCH AS SILVER EDTA.
-
2.发明授权Physical development utilizing 1-phenyl-3-pyrazolidone or a benzene diamine combined with a polyhydroxybenzene in acidic medium 失效在酸性介质中使用与苯甲酸组合的1-苯基-3-吡唑烷酮或苯并二苯胺的物理开发
公开(公告)号：US3713824A
公开(公告)日：1973-01-30
申请号：US3713824D
申请日：1970-01-05
申请人： ITEK CORP
发明人： MANHARDT J
CPC分类号： G03C1/705 , G03C5/58 , Y10S430/148
摘要： THIS INVENTION RELATES TO PHYSICAL DEVELOPMENT OF A PHOTOGRAPHIC REPRODUCTION SYSTEM WITH A PHYSICAL DEVELOPER. THE STEP OF PHYSICAL DEVELOPMENT COMPRISES CONTACTING AN EXPOSED PHOTOSENSITIVE LAYER CONTAINING THE OXIDIZING COMPONENT OF A CHEMICAL REDOX SYSTEM, SUCH AS SILVER NITRATE, WITH THE REDUCING COMPONENT OF THE REDOX SYSTEM WHERE THE REDUCING COMPONENT IS A MIXTURE OF A SLOW-ACTING REDUCING AGENT AND A FAST-ACTING REDUCING AGENT. THE USE OF A MIXED REDUCING AGENT AS DESCRIBED PERMITS DEVELOPMENT OF IMAGES OF IMPROVED DENSITY AND CONTRAST BECAUSE DEVELOPMENT INITIATES AND TAKES PLACE WITHIN THE PHOTOSENSITIVE LAYER RATHER THAN ON ITS SURFACE OR BEYOND ITS SURFACE AS TYPICALLY ENCOUNTERED WITH PRIOR ART DEVELOPERS. AN OVERALL PROCESS IN ACCORDANCE WITH THE INVENTION COMPRISES SELECTIVELY EXPOSING THE REPRODUCTION SYSTEM TO ACTIVATING RADIATION AND DEVELOPING IN THE MANNER ABOVE DESCRIBED. A PORTION OR ALL OF THE OXIDIZING COMPONENT OF THE REDOX SYSTEM MAY BE CONTAINED WITHIN THE PHOTOSENSITIVE LAYER AT THE TIME OF EXPOSURE TO GIVE A DIRECT READ-OUT OR IT IS POSSIBLE TO APPLY ALL OF THE OXIDIZING COMPONENT AT A TIME SUBSEQUENT TO EXPOSURE FOLLOWED BY CONTACT WITH THE REDUCING PORTION OF THE REDOX SYSTEM. A PHOTOSENSITIVE LAYER COMPRISING A PHOTOCONDUCTOR THAT BECOMES REVERSIBLY ACTIVATED UPON EXPOSURE TO ACTIVATING RADIATION IS PREFERRED. TITANIUM DIOXIDE HAVING A PARTICLE SIZE LESS THAN ABOUT 250 MILLIMICRONS AND WHICH HAS BEEN HEATED AT A TEMPERATURE BETWEEN ABOUT 200* C. AND 950* C. IS THE PREFERRED PHOTOCONDUCTOR.
-
搜索结果
2 条记录 (耗时 0.009 秒)
