| Patents for G03G 21 - Arrangements not provided for by groups , e.g. cleaning, elimination of residual charge (34,276) |
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| 04/14/1981 | CA1099328A1 Electrostatic copying machine having flash-discharge- lamp-fixing unit |
| 04/08/1981 | EP0026677A1 Magnetic photoreceptor cleaning system |
| 04/08/1981 | EP0026562A1 Sheet collection apparatus and sorters incorporating same |
| 04/07/1981 | US4260904 Power feed control device for copying apparatus |
| 04/07/1981 | US4260878 Management system for copying machines |
| 04/07/1981 | US4260248 Electrophotographic copying apparatus equipped with copying coverage indication device |
| 04/07/1981 | US4260243 Cleaning apparatus |
| 04/07/1981 | US4260242 Electrophotographic apparatus for forming a duplicated image at any desired position on a record carrier |
| 04/07/1981 | US4260238 Transfer type electrostatic copying apparatus |
| 04/07/1981 | US4260236 Electrophotographic apparatus |
| 04/07/1981 | US4260235 Contamination prevention system |
| 04/07/1981 | US4260073 Virgin toner and used toner supply apparatus and method |
| 04/02/1981 | WO1981000827A1 Centrifugal clamp on a high speed print drum |
| 03/31/1981 | US4259565 Method of controlling heaters for copying apparatus |
| 03/31/1981 | US4259006 Air jet means for removing liquid from a conductive surface |
| 03/31/1981 | US4259003 Imaging surface discharge and cleaning apparatus for electrophotographic copier |
| 03/31/1981 | CA1098580A1 Excess developer removal apparatus |
| 03/25/1981 | EP0025678A1 Cleaning device for a transferring system of a wet-type copying machine |
| 03/25/1981 | EP0025664A1 Copy sheet counting device for copying apparatus |
| 03/24/1981 | CA1098195A1 Copier document sensing and control system |
| 03/24/1981 | CA1098167A1 Cleaning devices for use in electrophotographic apparatus |
| 03/24/1981 | CA1098165A1 Reproduction machine with duplex image shift |
| 03/24/1981 | CA1098164A1 Apparatus and method for noise immunity for control signals in electrostatographic processing machines |
| 03/24/1981 | CA1098163A1 Screen cleaning device |
| 03/17/1981 | CA1097723A1 Extended range variable magnification reproduction machine |
| 03/11/1981 | EP0024712A1 Sheet delivery device in a copier |
| 03/10/1981 | US4255044 Cleaning blade for electrophotography |
| 03/10/1981 | US4255042 Light pipe for accurate erasure of photoconductor charge |
| 03/10/1981 | CA1097399A1 Sequential load dual - document feed |
| 03/10/1981 | CA1097398A1 Document reproduction having output means with plural outputs operable in a plurality of modes |
| 03/10/1981 | CA1097397A1 Electronic copy selection controls for a document reproduction machine |
| 03/03/1981 | US4254202 Electrostatic copying process |
| 03/03/1981 | US4253761 Cleaning devices for use in electrophotographic apparatus |
| 03/03/1981 | US4253760 Electrophotographic apparatus for printing multiple copies of an image on a photosensitive member |
| 03/03/1981 | US4253759 Copy machine having duplexing feature |
| 03/03/1981 | US4253758 Extender guides for photoconductive drum removal |
| 02/25/1981 | EP0024234A1 Process for electrographic reproduction on a support by reverse developping and pressure fixing |
| 02/24/1981 | US4252882 Developing electrophotographic images using aqueous ink and treating smooth, hydrophobic image surface with cleaning liquid |
| 02/24/1981 | US4252435 Cleaning subsystem for a xerographic reproduction machine |
| 02/24/1981 | US4252434 Method and apparatus for conveying developing agent |
| 02/24/1981 | US4252433 Method and apparatus for removing a residual image in an electrostatic copying system |
| 02/24/1981 | US4252432 Control system for electrophotographic apparatus |
| 02/24/1981 | CA1096413A1 Copy set collecting apparatus |
| 02/17/1981 | US4251157 Apparatus for selecting originals for copying |
| 02/17/1981 | US4251155 Cleaning arrangement in an electrophotographic copying machine |
| 02/17/1981 | US4250810 Centrifugal clamp on a high speed print drum |
| 02/17/1981 | CA1095965A1 Multi frequency screen |
| 02/11/1981 | EP0023816A1 Image size control apparatus |
| 02/11/1981 | EP0023755A1 Apparatus for controlling the lateral alignment of a belt |
| 02/11/1981 | EP0023544A1 Document reproduction system with two original document feed devices |
| 02/10/1981 | CA1095579A1 Xerographic copier |
| 02/03/1981 | US4248526 Circuit for detecting door state in copying apparatus |
| 02/03/1981 | US4248525 Apparatus for producing sets of collated copies |
| 02/03/1981 | US4248518 Electrophotographic copying apparatus |
| 02/03/1981 | CA1095112A1 Collation controls |
| 01/28/1981 | EP0023076A1 Magnification mode indicator apparatus for a photocopier |
| 01/28/1981 | EP0022957A1 Electrophotographic copier |
| 01/27/1981 | US4247839 Electrographic apparatus having an improved exit opening portion |
| 01/27/1981 | US4247196 Cleaning device for use in electrophotographic copying machines |
| 01/27/1981 | US4247194 Control system for electrophotographic copying machine |
| 01/27/1981 | US4247193 Electrostatic copying machine comprising jam sensors |
| 01/22/1981 | WO1981000156A1 Improved photocopying apparatus |
| 01/21/1981 | EP0022680A1 Document handling apparatus and method |
| 01/20/1981 | US4245836 Apparatus for positioning sheet like originals |
| 01/20/1981 | CA1094114A1 Automatic document handler in duplex copying machine |
| 01/13/1981 | US4244649 Optical system for providing visual aid for proper magnification selection |
| 01/13/1981 | US4244647 Erasing device for image transfer type copying apparatus |
| 01/13/1981 | US4244646 Device and method for producing a number of copies by electrophotographic techniques |
| 01/07/1981 | EP0021561A2 Electrostatographic printing machine |
| 01/07/1981 | EP0020768A1 Electrophotographic copying machine |
| 01/06/1981 | US4243313 Image forming device |
| 01/06/1981 | CA1093138A1 Document coding |
| 12/30/1980 | US4241658 Duplicating machine with duplexing capability |
| 12/30/1980 | CA1092639A1 Photoconductor charging technique |
| 12/23/1980 | US4240744 Photographic copying machine with interchangeable format masks |
| 12/23/1980 | US4240723 Process for electrographic image production and an apparatus for carrying out this process |
| 12/23/1980 | CA1092219A1 Method and apparatus for adaptive collation |
| 12/23/1980 | CA1092185A1 Abnormally low reflectance photoconductor sensing system |
| 12/23/1980 | CA1092175A1 Apparatus for handling flexible sheet material of different sizes |
| 12/16/1980 | US4239984 Signal system |
| 12/16/1980 | US4239375 Image carrier drum for an electrophotographic copier |
| 12/16/1980 | US4239374 Electrostatographic apparatus comprising automatic document type determination means |
| 12/16/1980 | CA1091755A1 Copying machine with means for easy replacement of the photo-receptor sheet |
| 12/16/1980 | CA1091497A1 Process for electrophotographic image formation by toner transfer using a corona |
| 12/09/1980 | US4238126 Recirculating simplex/duplex document handler |
| 12/09/1980 | US4237592 Elastic roller for image forming apparatus |
| 12/09/1980 | CA1091287A1 Cycle-out logic for a multi-mode copier/duplicator |
| 12/09/1980 | CA1091007A1 Method of reusing substrate for image presentation |
| 12/02/1980 | US4236811 Electrophotographic copying apparatus |
| 12/02/1980 | US4236808 Copier scan and collator back bar control |
| 12/02/1980 | US4236807 Modular electrophotographic copying machine |
| 12/02/1980 | CA1090867A1 Dual mode electrostatographic printing machine |
| 11/26/1980 | EP0019485A1 Electrophotographic printing machine |
| 11/26/1980 | EP0019094A1 Original document transport mechanism for an electrophotographic copier |
| 11/18/1980 | US4234249 Tracking power supply for AC and DC corotrons |
| 11/18/1980 | US4234180 Recirculating document handler configuration |
| 11/18/1980 | CA1089690A1 Focal adjustment on a single-focus lens in a continuously variable magnification system |
| 11/11/1980 | US4233386 Method of removing residual toner from surface of photoconductive member for use in electrostatic copying apparatus of the transfer type |
| 11/11/1980 | US4233381 Exposure to action of blanket light |
| 11/11/1980 | CA1089525A1 Multiple copy electrophotographic reproducing method and apparatus |