Electrophotographic duplicator
阅读：435发布：2023-12-05
专利汇可以提供Electrophotographic duplicator专利检索，专利查询，专利分析的服务。并且An electrophotographic copying machine utilizes an endless belt having a conductive film and carrying a photosensitive surface thereon. The photosensitive surface comprises a thin evaporated film of a non-crystalloid selenium formed on at least a portion of the film and an organic semiconductor film deposited on the evaporated film. The endless belt also includes means for indicating exposure frames and the endless belt is positioned so that the photosensitive surface receives the image by a detector mechanism which senses the exposure frames. The apparatus also includes a movable frame which is detachably mounted to the copying machine for tensioning, aligning, and maintaining the belt flat.，下面是Electrophotographic duplicator专利的具体信息内容。
2. An electrophotographic copying machine as in claim 1 wherein said thin evaporated film is a selenium-tellurium alloy.
3. An electrophotographic copying machine, comprising: an exposure station for supporting an original document to be exposed; an optical system for projecting a mirror image of said original document; means for conveying a photosensitive surface to receive the projected image and including an endless belt supporting said photosensitive surface; means for driving said endless belt; frame means for maintaining the longitudinal alignment of said endless belt while being driven including a movable frame supported on a shaft extending along the longitudinal axis of said endless belt, said movable frame including a pair of said frames between which an idling roller is rotatably mounted and over which said endless belt travels, said side frames each having a protrusion extending outwardly of said idling roller so that should said endless belt shift toward either of said side frames, the edges of said belt will come into contact with one of said protrusions thereby causing said movable frame to rotate about said shaft to realign said belt; said endless belt including means for indicating exposure frames; means for detecting said exposure frames; means responsive to said detecting means for controlling said driving means to position said photosensitive surface to receive said image; means for supplying transfer sheets; means for contacting individual ones of said transfer sheets with said photosensitive surface; and means for developing and fixing the image on said transfer sheets.
4. An electrophotographic copying machine, comprising: an exposure station for supporting an original document to be exposed; an optical system for projecting a mirror image of said original document; means for conveying a photosensitive surface to receive the projected image and including an endless belt supporting said photosensitive surface; a movable frame for tensioning and aligning said endless belt; means for driving said endless belt and including a clutch; said endless belt including means for indicating exposure frames; means for detecting said exposure frames; means for supplying transfer sheets; means for contacting individual ones of said transfer Sheets with said photosensitive surface; means for developing and fixing the image on said transfer sheets; and means responsive to said detecting means for controlling said clutch to position said photosensitive surface to receive said image and including a circuit for controlling said means for driving and said means for supplying transfer sheets.
5. An electrophotographic copying machine, comprising: an exposure station for supporting an original document to be exposed; an optical system for projecting a mirror image of said original document; means for conveying a photosensitive surface to receive the projected image, and including an endless belt having a conductive film thereon and supporting said photosensitive surface, said photosensitive surface comprising a thin evaporated film of non-crystalloid selenium formed on at least a portion of said conductive film, and an organic semiconductor film deposited on said evaporated film; means for driving said endless belt; a movable frame for tensioning and aligning said endless belt; said endless belt including means for indicating exposure frames; means for detecting said exposure frames; means responsive to said detecting means for controlling said driving means to position said photosensitive surface to receive said image; means for supplying transfer sheets, said transfer sheets each comprise a conductive base member and a thin dielectric film coated on said conductive base member; means for contacting individual ones of said transfer sheets with said photosensitive surface and including a conductive roller engaging said conductive base member; and means for developing and fixing the image on said transfer sheets.
6. An electrophotographic copying machine, comprising: an exposure station for supporting an original document to be exposed; an optical system for projecting a mirror image of said original document and including a flash device for illuminating said original document; means for conveying a photosensitive surface to receive the projected image, and including an endless belt having a conductive film thereon and supporting said photosensitive surface, said photosensitive surface comprising a thin evaporated film of non-crystalloid selenium formed on at least a portion of said conductive film, and an organic semiconductor film deposited on said evaporated film; means for driving said endless belt; a movable frame for tensioning and aligning said endless belt; said endless belt including means for indicating exposure frames; means for detecting said exposure frames; means responsive to said detecting means for actuating said flash device; means for supplying transfer sheets; means for contacting individual ones of said transfer sheets with said photosensitive surface; and means for developing and fixing the image on said transfer sheets.
7. An electrophotographic copying machine as in claim 6 wherein said movable frame is detachably mounted to the copying machine and includes a driving roller for moving said endless belt, a movable frame supporting said driving roller and supported on a shaft extending along the longitudinal axis of said endless belt, and means for extending said movable frame to tension said endless belt.
8. An electrophotographic copying machine as in claim 7 wherein said movable frame further includes means for engaging each side of said endless belt to rotate said movable frame about said shaft to re-align said endless belt.
9. An electrophotographic copying machine as in claim 6 wherein said means for driving includes a clutch and said means responsive to said detecting means controls said clutch and includes a circuit for controlling said means for driving and said means for supplying transfer sheets.
10. An electrophotographic copying machine as in claim 6 wherein said thin evaporated film is a selenium-tellurium alloy.
11. An electrophotographic copyinG machine as in claim 6 wherein said transfer sheets each comprise a conductive base member and a thin dielectric film coated on said conductive base member and said means for contacting includes a conductive roller engaging said conductive base member.
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