| Patents for G03G 21 - Arrangements not provided for by groups , e.g. cleaning, elimination of residual charge (34,276) |
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| 08/27/1991 | US5043595 Power supply control subsystem for an image forming apparatus |
| 08/27/1991 | US5042793 Sheet sorter image forming apparatus having same |
| 08/21/1991 | EP0442534A1 Cleaning device for an image-forming machine |
| 08/21/1991 | EP0442526A2 A copying machine equipped with an image editor |
| 08/21/1991 | EP0442453A2 Color image forming apparatus |
| 08/21/1991 | EP0267241B1 Recirculating document feeder |
| 08/20/1991 | US5041872 Image forming apparatus using a photosensitive drum selectively pivoting with an upper part of the housing |
| 08/20/1991 | US5041871 Clam shell type image forming apparatus |
| 08/20/1991 | US5041863 Image recording apparatus which prohibits starting of a recording operation until completion of photosensitive recording medium adjustment |
| 08/14/1991 | EP0441227A2 Electrophotographic printing apparatus |
| 08/13/1991 | US5040075 Digital electrophotographic copying apparatus |
| 08/13/1991 | US5040030 Electrostatographic cleaning |
| 08/08/1991 | WO1991011381A1 Arrangement for the lateral positioning of a recording substrate in a printing or copying device |
| 08/07/1991 | EP0440407A2 Electrophotographic apparatus |
| 08/07/1991 | EP0440404A2 Electrophotographic apparatus |
| 08/06/1991 | US5038218 Image processing assembly with conversion and rotation of input image data or predetermined data to match data resolution and orientation |
| 08/06/1991 | US5038182 Copier operable in a two-sided copy mode |
| 08/06/1991 | US5038181 Image forming unit having means for preventing a cleansing blade from contacting an image holding member until image forming unit is used |
| 08/06/1991 | US5038180 Device for removing from an image carrier and storing toner waste |
| 08/06/1991 | US5038174 Image forming apparatus having a ventilated image forming unit |
| 08/06/1991 | US5038173 Replaceable unit determination mechanism |
| 08/06/1991 | US5038172 Play-free bearing mechanism for photo-conductive drums in printer or copier devices |
| 08/06/1991 | US5038170 Cooling system for an image forming apparatus |
| 08/06/1991 | US5038169 Plural mode printer user interface terminal |
| 08/06/1991 | CA1287368C Print engine for color electrophotography |
| 08/03/1991 | WO1991011331A1 Anti-photographic/photocopy imaging process and product made by same |
| 08/03/1991 | CA2075063A1 Anti-photographic/photocopy imaging process and product made by same |
| 07/30/1991 | US5036369 Image forming apparatus |
| 07/30/1991 | US5036358 Image-forming apparatus and a method for a detecting developer amount therein |
| 07/30/1991 | US5035973 Image forming method and apparatus therefor |
| 07/25/1991 | WO1991010942A1 Conductive roll and process for producing the same |
| 07/24/1991 | EP0438265A2 Color image forming apparatus |
| 07/24/1991 | EP0438160A2 Electrophotographic apparatus |
| 07/23/1991 | US5034780 Image forming apparatus |
| 07/23/1991 | US5034779 Fibre traps in electrostatographic machines |
| 07/23/1991 | US5034771 Copier having superimposed and duplex copying capabilities and capable of discriminating false paper jam and real paper jam |
| 07/23/1991 | US5034770 Job integrity and security apparatus |
| 07/17/1991 | EP0437097A2 Image forming apparatus |
| 07/16/1991 | US5032904 Color image processing apparatus |
| 07/16/1991 | US5032870 Electrophotographic apparatus |
| 07/09/1991 | USRE33633 Method and device for charging or discharging a member |
| 07/09/1991 | US5031001 Toner collecting device for electrophotographic equipment which reduces a load acting on a collecting roller |
| 07/09/1991 | US5031000 Cleaning apparatus for the reduction of agglomeration-caused spotting |
| 07/09/1991 | US5030999 High frequency vibratory enhanced cleaning in electrostatic imaging devices |
| 07/09/1991 | US5030994 Electrophotographic apparatus with multiple speed mode |
| 07/09/1991 | US5030992 Device for removing electrostatic charge in image forming apparatus |
| 07/09/1991 | US5030991 Jam detection and clearance system for duplex copiers |
| 07/09/1991 | US5030989 Distortion checking device in an electrophotographic copying apparatus |
| 07/09/1991 | US5030988 Color image forming apparatus |
| 07/09/1991 | US5030987 Image forming apparatus |
| 07/09/1991 | CA1285982C Process cartridge and image forming apparatus using same |
| 07/03/1991 | EP0435640A2 Color image forming apparatus |
| 07/03/1991 | EP0435508A2 Image reading device |
| 07/03/1991 | EP0435342A2 Cleaning blade and apparatus employing the same |
| 07/02/1991 | US5029316 Toner seal method and apparatus in electrophotographic recording apparatus |
| 07/02/1991 | US5028966 Image-forming machine |
| 07/02/1991 | US5028959 Vacuum collection system for dirt management |
| 07/02/1991 | US5028954 Image recording apparatus |
| 07/02/1991 | US5028042 Image forming apparatus having a controller to prevent erroneous feeding from a rotatable cassette and method thereof |
| 07/02/1991 | CA1285603C Offset electrostatic imaging process |
| 07/02/1991 | CA1285601C Offset electrostatic printer and imaging process utilizing dehumidified air |
| 06/27/1991 | WO1991009349A1 Arrangement for the mechanical coupling of units of an electrophotographic printing or copying device |
| 06/26/1991 | EP0433421A1 Priority interrupt during editing mode. |
| 06/26/1991 | EP0433280A1 Arrangement for printing devices for monitoring printing medium containers. |
| 06/25/1991 | US5027221 Digital image recording system with preset control for selecting output formats based on the selected amount of pixel color and density data |
| 06/25/1991 | US5027162 Automatic document conveying device |
| 06/25/1991 | US5027161 Image forming apparatus |
| 06/25/1991 | US5027153 Image forming apparatus with card device input |
| 06/25/1991 | US5027152 Image-forming machine having a process unit detachably mountable on a movable supporting and guiding means |
| 06/25/1991 | US5026037 Copying machine with multiple transport functions inclusive of duplex and composite copying from an intermediate feed tray by selectives top or bottom feed |
| 06/25/1991 | CA1285292C Two-up automatic document feeder for simplex to duplex copying |
| 06/19/1991 | EP0433061A2 Process cartridge detachably mountable to image forming apparatus |
| 06/19/1991 | EP0432520A2 Image forming apparatus |
| 06/19/1991 | EP0432476A2 Electrophotographic apparatus with multiple speed mode |
| 06/19/1991 | EP0432453A2 Cleaning apparatus for the reduction of agglomeration caused spotting |
| 06/19/1991 | CN2079313U Toxic filter for duplicating machine |
| 06/19/1991 | CN1052381A Auxiliary paper feeding device for anti-dual sheet of thin paper copying |
| 06/18/1991 | US5025291 Edge effect compensation in high frequency vibratory energy producing devices for electrophotographic imaging |
| 06/13/1991 | WO1991008639A1 Copier with auto scaling, auto paper select, and window scaling |
| 06/12/1991 | EP0431921A2 Post-collation duplex copying system |
| 06/12/1991 | EP0431308A2 Conflict resolution with warning in a reprographic system |
| 06/11/1991 | US5023666 Image forming apparatus using an image carrier with multiple layers |
| 06/11/1991 | US5023664 Non-mechanical printer or copier means comprising an exposure means arranged in the development region |
| 06/11/1991 | US5023661 Xerographic |
| 06/11/1991 | US5023660 Image bearing member and driving mechanism therefor |
| 06/11/1991 | US5023633 Electrostatic printer using continuous paper |
| 06/06/1991 | DE4038307A1 Transporting copy papers in printer or copier - leading to stacking tray or return feed unit for double-sided copying after being turned over |
| 06/06/1991 | DE4038271A1 Controlling transport of copy sheets in duplex machine - stacking and feeding to duplex unit in predetermined position if jam occurs |
| 06/05/1991 | EP0429657A1 Image forming apparatus |
| 06/04/1991 | US5021838 Preferred toner/carrier properties |
| 06/04/1991 | US5021836 Method and device for transferring two images to different sides of a receiving sheet |
| 06/04/1991 | US5021831 Filter for removing smoke and toner dust used in electrophotographic/electrostatic recording apparatus |
| 06/04/1991 | US5021830 Electrostatic recording apparatus |
| 06/04/1991 | US5021828 Copying apparatus having a consumable part |
| 06/04/1991 | US5021826 Electrophotographic copying machine having a function of judging whether a copying operation can be performed responsive to a remainder amount of consumptive parts or materials |
| 06/04/1991 | US5021825 Latching mechanism for a removable processing cartridge in a photocopying device |
| 06/04/1991 | US5020697 Image recording apparatus having toner reservoir |
| 05/29/1991 | EP0428900A2 Electrostatic recording apparatus |
| 05/29/1991 | EP0428828A2 Process for the detection of copies |
| 05/28/1991 | US5019872 Continuous-form electrophotographic printer |