Patents
Sitemap › G03 - Photography; Cinematography; Analogous techniques using waves other than optical waves; Electrography; Holography › G03G - Electrography; Electrophotography; Magnetography › G03G 21 - Arrangements not provided for by groups , e.g. cleaning, elimination of residual charge
Patents for G03G 21 - Arrangements not provided for by groups , e.g. cleaning, elimination of residual charge (34,276)
09/1981
09/01/1981CA1108219A1 Reproduction machine with on board document handler diagnostics
09/01/1981CA1108218A1 Operator console for a reproduction machine
08/1981
08/26/1981EP0034499A1 Multiple mode image processing apparatus and method
08/25/1981US4286039 Method and apparatus for removing excess developing liquid from photoconductive surfaces
08/25/1981CA1107810A1 Drum containing advanceable photosensitive web
08/25/1981CA1107805A1 Variable magnification copying apparatus
08/25/1981CA1107804A1 Variable magnification reproducing machine
08/25/1981CA1107802A1 Automatic duplex control system for a reproduction machine
08/19/1981EP0034066A2 Printer with forms overlay
08/18/1981US4284345 Blade-type cleaning device for electrophotographic copying machine
08/12/1981EP0033647A2 Cleaning device for an electrostatic copying apparatus
08/12/1981EP0033552A1 Device for the detection of sheet-like objects
08/12/1981EP0033453A1 Duplex copy printing system and method
08/11/1981US4283773 Programmable master controller communicating with plural controllers
08/11/1981CA1106872A1 Document protection using colors below critical density of copier
08/11/1981CA1106793A1 Sorter for a reproduction machine
08/11/1981CA1106781A1 Pre/post-collation copying system
08/04/1981US4281921 Plural color anti-copying systems for xerographic and electrostatic copying machines
08/04/1981US4281918 Electrophotographic copier permitting a toner dispensing cassette to be subsequently employed as a residual toner receptacle
07/1981
07/29/1981EP0032765A1 Procedure and device for transporting originals to and from the reproduction station of a copying machine
07/28/1981US4281244 Apparatus for detecting sheet-formed support material
07/28/1981US4280763 Sequential control circuit means
07/22/1981EP0032155A1 Improved photocopying apparatus
07/21/1981US4279501 Cleaning device for photoelectrostatic copying apparatus
07/21/1981US4279500 Electrophotographic apparatus and an abrading means
07/21/1981US4279499 Electrophotographic cleaning apparatus
07/21/1981US4279496 Belt support system
07/14/1981US4278345 Drum cleaning apparatus
07/14/1981US4278344 Recirculating duplex documents copier
07/14/1981US4278342 Xerographic charging
07/14/1981CA1105075A1 Cleaning methods and apparatus
07/14/1981CA1105069A1 Control system for electrostatographic machines
07/08/1981EP0031726A1 Electrostatic copying apparatus
07/08/1981EP0031564A2 Quality control copying apparatus
07/08/1981EP0031464A1 Copier
07/08/1981EP0031418A1 Method and apparatus for transmitting information
07/07/1981US4277549 Making first standard copy, copying first standard copy, detection of image density, resetting development characteristics
07/07/1981US4277514 Forgery resistant document with colored areas and method for thwarting reproduction of same
07/07/1981US4277165 Photocopying machine equipped with variable magnification arrangement
07/07/1981US4277164 Photocopier photoconductive sheet holding device
07/01/1981EP0031075A2 Cyclic electrophotographic copying process
07/01/1981EP0031043A1 Electrophotographic copier including photoconductor charge sensing means
06/1981
06/30/1981US4275958 Copying apparatus
06/30/1981CA1104196A1 Preconditioning image transfer areas in document reproduction machines
06/30/1981CA1104189A1 Reproduction machine having duplex job recovery capabilities
06/24/1981EP0030775A2 Control circuit in an electrophotographic copying machine
06/23/1981US4275450 Magnification/demagnification apparatus and method
06/23/1981CA1103745A1 Electrophotographic apparatus
06/23/1981CA1103717A1 Counterfeit resistant document
06/17/1981EP0030302A2 Servosystem for controlling acceleration and deceleration of a servo motor
06/16/1981US4273439 Document feeder system having a suspending/commencing mode with a judgment decision capability
06/16/1981US4273437 Bearing plate for a band of photoconductive recording medium
06/16/1981CA1103302A1 Photoconductive drum cleaning apparatus
06/16/1981CA1103301A1 Method of and apparatus for synchronously transferring an original and copying paper for electrostatic photoduplication
06/10/1981EP0030056A1 Influence probing arrangement and method for its realization
06/09/1981US4272184 Conductive carrier for magnetic brush cleaner
06/09/1981US4272183 Control system responsive to eraser malfunctions in electrophotographic copying machines
06/03/1981EP0029647A1 Methods and apparatus for pre-collation copying duplex documents
06/03/1981EP0029646A1 Recirculating document handler
06/03/1981EP0029584A1 Method for operating electrophotographic copying apparatus
06/03/1981EP0029508A1 Xerographic copier including developed image density control
06/02/1981US4271436 Digital copying machine
06/02/1981US4270860 Electrophotographic apparatus employing a control assembly for controlling successive duplication of a document
06/02/1981US4270856 Conversion kit for photocopying machine
06/02/1981CA1102400A1 Cleaning device for photoelectrostatic copying apparatus
06/02/1981CA1102399A1 Imaging system
06/02/1981CA1102398A1 Drive system for multi-mode reproducing apparatus
05/1981
05/27/1981EP0029109A2 Method of making multi-page documents in a copier-printer system
05/26/1981US4269503 Toner cleaning apparatus
05/26/1981US4269500 Trouble detecting system for electrophotographic copying machine
05/20/1981EP0028919A1 Magnetic brush roll and developing or cleaning apparatus incorporating same
05/20/1981EP0028680A1 Process of, and means for charging an imaging element in an electrophotographic machine
05/19/1981US4268746 Document feed jam detector for a document reading apparatus
05/19/1981US4268161 Electrophotographic apparatus with corona discharge control
05/19/1981US4268022 Conforming document aligner
05/12/1981US4266869 Apparatus and method for making lithographic printing plates
05/12/1981CA1101132A1 Method of and device for generating coded images by means of a multiple radiation source
05/12/1981CA1101050A2 Cleaning devices for use in electrophotographic apparatus
05/06/1981EP0028167A2 Method of indicating the cause of a malfunction in a reproduction machine
05/06/1981EP0028166A2 Method of job recovery in a reproduction machine and reproduction machine including job recovery means
05/05/1981US4265998 Electrophotographic photoreceptive background areas cleaned by backcharge process
05/05/1981US4265469 Protected document and method of making same
05/05/1981US4265440 Computer-controlled paper feeder
05/05/1981CA1100645A1 Direct memory access refresh system
05/05/1981CA1100571A1 Electrostatic copier
05/05/1981CA1100567A1 Variable magnification reproducing apparatus
05/05/1981CA1100537A1 Recirculating document feeder
04/1981
04/28/1981US4264191 Electrophotographic imaging system including a laminated cleaning and/or doctor blade
04/28/1981US4264190 Toner cleaning device for an electrophotographic apparatus
04/28/1981US4264187 Document handler
04/28/1981US4264184 Ozone removing device for electrographic apparatus
04/28/1981CA1100171A1 Protection system for electrostatogaphic machines
04/22/1981EP0027266A1 Document copying method and apparatus which corrects for positional errors of a transferable image
04/21/1981US4263390 Residual toner removing device
04/21/1981CA1099807A1 Collating document feeder with multiple feed detector
04/21/1981CA1099589A1 Duplexing copying system
04/15/1981EP0027046A1 Magnetic brush apparatus
04/15/1981EP0026978A1 Reproducing apparatus
04/14/1981US4262193 Photograph multiplying factor automatic-counting scale
04/14/1981US4261661 Apparatus for producing double sided copies
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