| Patents for G03G 21 - Arrangements not provided for by groups , e.g. cleaning, elimination of residual charge (34,276) |
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| 04/17/1990 | US4918490 Batch mode duplex printing |
| 04/17/1990 | US4918488 In an electrostatographic copier or printer |
| 04/17/1990 | CA1267804A1 Amorphous silicon photoreceptors for electrophotography, process for the preparation and/or regeneration thereof, and method for the electrophotography using such materials |
| 04/11/1990 | EP0363153A2 Sheet edge detector |
| 04/11/1990 | EP0363132A2 LED illuminator bar |
| 04/11/1990 | EP0362204A1 Covering and cleaning device for the optical character generator in an electrophotographic printing device |
| 04/11/1990 | CN1007557B Cassette light sensitive apparatus |
| 04/10/1990 | US4916491 Control device for a copier |
| 04/10/1990 | US4916487 Image forming apparatus |
| 04/10/1990 | US4916469 Image-forming apparatus |
| 04/05/1990 | DE3833432A1 Disposable cartridge having a residual toner container for electrophotographic (electrographic) recording devices |
| 04/04/1990 | EP0361509A2 Image forming apparatus having cleaning means |
| 04/04/1990 | EP0361478A1 Page printer |
| 04/04/1990 | EP0361426A2 Image-forming machine |
| 04/04/1990 | CN1041046A Method of repeatedly recording optical image information and image pickup device |
| 04/03/1990 | US4914486 Image forming apparatus having simultaneous multicolor copying mode |
| 04/03/1990 | US4914480 Corona discharging device for an electrophotographic apparatus |
| 04/03/1990 | US4914478 Storage stability |
| 04/03/1990 | US4914477 Reproduction apparatus having an image member with timing indicia |
| 04/03/1990 | US4914476 Device for displaying warm-up waiting time of image forming apparatus |
| 04/03/1990 | US4914475 Editing area setting method and editing area setting apparatus in an image forming apparatus |
| 04/03/1990 | US4914456 Electrostatographic apparatus |
| 04/03/1990 | US4914455 Process control for electrostatographic printers |
| 04/03/1990 | US4913448 Sealing arrangement |
| 03/27/1990 | US4912563 Electrophotographic image forming apparatus having replaceable optical unit |
| 03/27/1990 | US4912516 Belt transferring device |
| 03/27/1990 | US4912512 Electrophotographic copier with a capability of automatically setting up optimum process conditions |
| 03/27/1990 | US4912509 Integrated detachable image forming unit and developing unit of an image forming apparatus |
| 03/21/1990 | EP0359571A2 Electrophotographic printing apparatus |
| 03/21/1990 | EP0207137B1 Apparatus and method for forming reproductions with desired margin areas |
| 03/20/1990 | US4910560 Cleaning device for use in copying machine |
| 03/20/1990 | US4910557 Image density control method for an image forming apparatus |
| 03/14/1990 | EP0358220A1 Page printer |
| 03/13/1990 | US4908873 Document reproduction security system |
| 03/13/1990 | US4908674 Image forming apparatus |
| 03/13/1990 | US4908672 Paper size selection apparatus for use in copier machines |
| 03/13/1990 | US4908671 Cleaning device for an image recorder |
| 03/13/1990 | US4908668 Image-forming machine |
| 03/13/1990 | US4908663 Electrophotographic copying machine |
| 03/13/1990 | US4908661 Holder device for handling an image carrier of an image forming apparatus |
| 03/13/1990 | US4908660 Image duplicating apparatus having composite and duplex modes of operation |
| 03/13/1990 | US4908659 Image-forming machine having a cover member and comprising engaging means and hampering means for controlling closure of the cover |
| 03/07/1990 | EP0357497A2 Method of deelectrification in an electrophotographic apparatus |
| 03/07/1990 | EP0357041A2 Page printer |
| 03/07/1990 | EP0308431B1 Device enabling the clean replacement of a toner container in a toner transfer system of a non-mechanical printer or copier |
| 03/06/1990 | US4907031 Copy apparatus having a priority copy interrupt and malfunction detection system |
| 02/27/1990 | US4905098 Copier with an optional facsimile function and method of controlling the same |
| 02/27/1990 | US4905046 Copying apparatus having means for moving the optical scanning system to a predetermined position when an abnormality is detected |
| 02/27/1990 | US4905028 Electrophotographic printer |
| 02/21/1990 | EP0354962A1 Blade for electrophotographic apparatus |
| 02/20/1990 | US4903146 Digital image forming apparatus |
| 02/20/1990 | US4903084 Cleaning apparatus having an interference-fit housing |
| 02/20/1990 | US4903083 Simplified cleaning web apparatus |
| 02/20/1990 | US4903081 Transfer device |
| 02/20/1990 | US4903077 Electronic copying apparatus with trimming function |
| 02/20/1990 | US4903076 Image forming apparatus having stationary upper unit and pivotable lower unit |
| 02/20/1990 | US4903072 Image forming apparatus having cooling efficiency switching control function |
| 02/14/1990 | EP0354310A1 Method and apparatus for electrophotographic printing |
| 02/14/1990 | EP0354217A1 Electrostatographic apparatus having a supporting assembly for locating a photoconductive member |
| 02/13/1990 | US4901112 Copying apparatus and method of development control |
| 02/13/1990 | US4901110 Vertical print engine for electrophotographic apparatus |
| 02/08/1990 | WO1990000974A1 Arrangement for printing devices for monitoring printing medium containers |
| 02/07/1990 | EP0353975A2 Process cartridge and image forming apparatus using same |
| 02/07/1990 | EP0353974A2 Copy protection of multi-colour documents |
| 02/07/1990 | EP0353791A2 Electrostatic copying apparatus |
| 02/07/1990 | EP0353790A2 Electrostatic copying apparatus |
| 02/06/1990 | US4899198 Dual purpose cleaning apparatus |
| 02/06/1990 | US4899197 Fuser for use in an electrophotographic print engine |
| 02/06/1990 | US4899192 Image information apparatus |
| 01/31/1990 | CN1039314A Image forming apparatus |
| 01/31/1990 | CN1039313A Image forming apparatus |
| 01/30/1990 | US4897697 Counting system for use in a copying machine |
| 01/30/1990 | US4897696 Method of detecting abnormality in heat roller |
| 01/30/1990 | US4897695 Copying machine |
| 01/30/1990 | US4897694 Perforation hole image, eliminating copying machine |
| 01/30/1990 | US4897693 Magnetic particle carrying apparatus |
| 01/30/1990 | US4897333 Copying method |
| 01/25/1990 | WO1990000762A1 Cleaning apparatus with magnetic toner mover |
| 01/24/1990 | EP0352121A2 Toner cartridge for a copying apparatus |
| 01/23/1990 | US4896355 Device for photocopying a document |
| 01/23/1990 | US4896223 Display and input device |
| 01/23/1990 | US4896193 Multicolored image forming apparatus separable for ease of maintenance |
| 01/23/1990 | US4896191 Sheet transferring mechanism in an electrophotographic recording apparatus |
| 01/23/1990 | US4895103 Automatic cleaning method for image development apparatus |
| 01/16/1990 | US4894688 Device for circulating developer |
| 01/16/1990 | US4894679 Method and apparatus for use in transferring an image |
| 01/09/1990 | US4893194 Multi-copy system for a digital copier |
| 01/09/1990 | US4893150 Copier |
| 01/09/1990 | US4893137 Recording apparatus and ink cartridge |
| 01/03/1990 | EP0349003A2 Reset mechanism for a counter for counting the number of revolutions of a photoconductive drum |
| 01/03/1990 | EP0311646B1 Multi-purpose toner container for non-mechanical printers and copiers |
| 01/03/1990 | EP0160656B1 An electrophotographic information printer |
| 01/03/1990 | CN2050620U Recovery device for waste carbon ink of copier |
| 01/02/1990 | US4891679 For removing toner particles |
| 01/02/1990 | US4891678 Electrostatic recording apparatus having a cooled and insulated waste toner container |
| 01/02/1990 | US4891676 Transfer medium cleaning station for use in an electrophotographic print engine |
| 01/02/1990 | US4891670 Copying machine in which copying magnification can be easily set |
| 01/02/1990 | US4891666 Printed background pattern for a document |
| 12/28/1989 | WO1989012850A1 Cleaning apparatus having airfoils |
| 12/27/1989 | EP0348256A1 Image-forming apparatus |