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)
11/1980
11/11/1980CA1089509A1 Process for treating pile materials made into electrophotographic toner removal brushes
11/04/1980US4231652 Drum for electrophotographic copier
11/04/1980US4231567 Method and apparatus for clearing jams in copiers
11/04/1980US4231562 Recirculating document feeder
11/04/1980CA1088739A1 Apparatus for cleaning and developing dielectric receptor sheets for latent images
10/1980
10/28/1980US4230406 Cleaning system for an electrostatic copier
10/21/1980US4229511 Electrophotography with uniform exposure for residual potential
10/21/1980US4229100 Automatic copy recovery
10/21/1980US4229096 Countdown and start mechanism for an electrostatic copier
10/21/1980CA1088144A1 Chain feed control logic for a multi-mode copier/duplicator
10/15/1980EP0017514A1 Apparatus having a diagnostic mode of operation, and method of putting the apparatus into this mode
10/15/1980EP0017380A1 Apparatus for removing particles from a travelling member
10/15/1980EP0016924A1 A document reproduction machine including an enclosed exposure station
10/15/1980EP0016923A1 Electrophotographic copier incorporating a border discharge device
10/14/1980US4227720 Protected document
10/14/1980US4227719 Protection system for documents
10/14/1980CA1087545A1 Self-contained motor-driven collator deflector
10/14/1980CA1087427A1 Continuously variable reduction copier optics systems
10/01/1980EP0016301A1 Electrostatic machine incorporating toner scavenging chamber
10/01/1980EP0016300A1 Electrostatic copier
10/01/1980EP0016110A1 Method for providing electrical connection means in an electrographic element
09/1980
09/29/1980EP0016110A4 Method for providing electrical connection means in an electrographic element.
09/23/1980US4223993 Electrophotographic apparatus
09/17/1980EP0015686A1 Apparatus for supporting a travelling belt
09/16/1980US4222659 Copying apparatus for sheet originals and thicker originals
09/16/1980CA1085904A1 Duplicating machine employing image reversing optical paths with front edge document alignment on document input and output
09/09/1980US4221480 Belt support and control system
09/09/1980CA1085446A1 Electrophotographic copying apparatus
09/09/1980CA1085211A1 Multiple reduction indicators for continuously variable reduction copier machines
09/02/1980US4220699 Method for producing a large number of copies by means of copying apparatus
09/02/1980CA1084770A1 Image transfer unit for electrophotographic copying machines
08/1980
08/26/1980US4219272 Electrophotographic copier with replaceable photoconductive sheet
08/26/1980US4219271 Image forming method and device for controlling image density
08/26/1980US4219270 Reproducing apparatus
08/20/1980EP0014395A1 Indicator circuit including a bridge circuit with means for error indication independent of voltage source variation
08/19/1980US4218132 Drum cleaning apparatus for electrophotographic copying machine
08/19/1980US4218131 Cleaning device
08/19/1980US4218129 Electrophotographic apparatus
08/19/1980US4218126 Developer collection device for a copying machine
08/19/1980US4218125 Pneumatic system for supporting a photoconductive surface
08/12/1980CA1083656A1 Vibrating blade cleaner
08/12/1980CA1083655A1 Apparatus for producing collated copies from two sided originals
08/05/1980US4216282 AC corona to remove background from the imaging member of a magnetic copier
08/05/1980US4215931 Electrophotographic apparatus
08/05/1980US4215588 Control device for an intermittently movable driver member
07/1980
07/29/1980US4214833 Operation timing control system for mechanical apparatus operable under program control
07/29/1980CA1082448A1 Developing system for electostatic reproduction machines
07/22/1980US4214234 Range tracking analog to digital converter for use with a bridge
07/22/1980US4213794 Cleaning station
07/22/1980CA1082290A1 Automatic copier mode controls
07/22/1980CA1082015A1 Continuously variable reduction scanning optics drive
07/15/1980US4213190 Programmed copier control
07/15/1980US4212457 Pre/post-collation copying system
07/15/1980CA1081762A1 Multi-process control system for an electrophotographic printing machine
07/15/1980CA1081723A1 Document feeder with recirculation and unloading
07/08/1980US4211484 Drum cleaning blade for image transfer type electrophotographic copying machine
07/01/1980US4210448 One-component magnetic toner, corona
07/01/1980US4210346 Protected document bearing watermark and method of making
07/01/1980US4210319 Copy set counter duplex tray
06/1980
06/24/1980US4209249 Method and apparatus for generating duplex copies electrophotographically from simplex originals
06/24/1980US4209248 Continuously variable reduction copier optics systems
06/24/1980CA1079954A1 Toner reclaim conveyor
06/17/1980CA1079793A1 Single array ink jet printer
06/17/1980CA1079791A1 Memory management system for an ink jet copier
06/17/1980CA1079790A1 Ink jet copier
06/17/1980CA1079519A1 Self-compensating photoconductor web
06/10/1980US4206996 Job recovery method and apparatus
06/10/1980US4206995 Reproduction machine with on board document handler diagnostics
06/03/1980US4205912 Electrophotographic apparatus
06/03/1980US4205911 Cleaning system
05/1980
05/27/1980US4204730 Electrophotographic apparatus
05/27/1980US4204670 Sorter for a reproduction machine
05/27/1980US4204472 Duplexing copying system
05/27/1980CA1078487A1 Document article handling control
05/27/1980CA1078449A1 Deformable storage element for x-ray image display
05/27/1980CA1078448A1 Deformable x-ray image display element
05/27/1980CA1078422A1 Mini-collator/sorter
05/20/1980US4203663 Computer controlled electrostatic copying machine
05/20/1980US4203386 Electrostatic copier with insertable developer module
05/14/1980EP0010948A1 Electrostatographic printing machine
05/14/1980EP0010848A1 Electrophotographic apparatus having a replaceable photoconductive belt
05/13/1980US4202622 Digitally controlled image forming apparatus
05/13/1980US4202618 Electrostatic copying machine having flash-discharge-lamp fixing unit
05/13/1980US4202542 Apparatus for handling flexible sheet material of different sizes
05/13/1980CA1077556A1 Recirculating sheet feeder
05/13/1980CA1077535A1 Duo sequence page compiler with bidirectional joggers
05/06/1980US4201465 Drum cleaning process and apparatus for electrophotography
05/06/1980US4201464 Copy production machines having job separation capabilities
05/06/1980CA1077123A1 Copying apparatus with moving belt for transferring electrostatic or powder images
04/1980
04/29/1980US4200391 Electrostatographic apparatus comprising document density sensing means
04/29/1980US4200390 Combined copying and printing apparatus
04/29/1980US4200386 Copier/collator with extended collate functions
04/29/1980US4200278 Sorting apparatus for reproduction machine producing simplex and duplex copies
04/15/1980US4198156 Optics contamination prevention utilizing a coanda air deflection system
04/15/1980US4198155 Photoconductive belt assembly
04/15/1980CA1075762A1 Apparatus and method for neutralizing static charges in sheet/web feeding devices
04/15/1980CA1075758A1 Dual mode electrophotographic apparatus having dual function printing beam
04/15/1980CA1075757A1 Programmable controller for controlling reproduction machines
04/15/1980CA1075756A1 Programmable controller for controlling reproduction machines
04/08/1980US4197121 Method of making electrophotographic images with a uniform exposure step
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