| Patents for G03G 21 - Arrangements not provided for by groups , e.g. cleaning, elimination of residual charge (34,276) | 
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| 12/03/1991 | US5070370 Image-forming apparatus having a replaceable cartridge and a transfer member cleaning device | 
| 12/03/1991 | US5070366 Image forming apparatus featuring a constant contact-pressure drive | 
| 12/03/1991 | US5070365 Low lateral force drive roller system | 
| 12/03/1991 | US5070363 Counting system for use in a copying machine | 
| 12/03/1991 | US5070324 Variable magnification copier | 
| 11/28/1991 | WO1991018287A1 Pin hole detector | 
| 11/28/1991 | DE4116562A1 Cleaning blade prodn. - for electrophotography using curing derivs. comprising imidazole deriv. and poly:ol components | 
| 11/27/1991 | EP0458318A2 Image forming apparatus with rotable member press-contacted to image bearing member | 
| 11/26/1991 | US5068853 Fail-safe apparatus for image forming apparatus | 
| 11/21/1991 | EP0457552A2 Reprographic machine | 
| 11/21/1991 | EP0457544A1 Printing of reflective sheeting | 
| 11/19/1991 | US5066989 Electrophotographic | 
| 11/19/1991 | US5066988 Electrophotographic apparatus having means for avoiding blurring effects caused by idle intervals | 
| 11/19/1991 | US5066983 Cleaning unit for cleaning recording medium of an electrophotographic apparatus | 
| 11/19/1991 | US5066982 Cleaner-less image forming apparatus | 
| 11/19/1991 | US5066978 Image forming apparatus having an exchangeable unit exchange timing indicating device | 
| 11/19/1991 | US5066977 System for managing the number of image forming operations in an image forming apparatus | 
| 11/19/1991 | US5066976 Image forming apparatus having a print cartridge | 
| 11/19/1991 | US5065995 Sheet supplying device | 
| 11/14/1991 | CA2016655A1 Individually wrapped towelett impregnated with a chemical rejuvinating formula, to remove and clean dirt, debris and toner buildup from the rollers and document path of a facsimile machine, commonly known as a fax machine | 
| 11/13/1991 | EP0455771A1 Copier with auto scaling, auto paper select, and window scaling. | 
| 11/12/1991 | US5065195 Color image forming apparatus having a freely installable and detachable process cartridge | 
| 11/12/1991 | US5065194 Piezo film cleaner | 
| 11/12/1991 | US5065188 Charge-eliminating apparatus of copier | 
| 11/12/1991 | US5065181 Image forming apparatus capable of inscribing a desired date on copying paper | 
| 11/05/1991 | US5063535 Programming conflict identification system for reproduction machines | 
| 11/05/1991 | US5063414 Copier allowing successive copying operations while avoiding certain waiting period | 
| 11/05/1991 | US5063409 Image recording apparatus and exchanging unit used in the same | 
| 11/05/1991 | US5063404 Document illumination assembly adapted to reduce platen overheating | 
| 11/05/1991 | US5063397 Variable-thickness imaging members | 
| 10/31/1991 | DE4113560A1 Fixing station for electrophotographic imaging device - has return mechanism for feeding transparent sheet through fixing station several times | 
| 10/30/1991 | EP0453963A2 Process cartridge detachably mountable to image forming apparatus | 
| 10/30/1991 | EP0255543B1 Electrophotographic reproduction apparatus and method with selective screening | 
| 10/29/1991 | US5061966 Method of cleaning an image retainer | 
| 10/29/1991 | US5061962 Copier with a plurality of reference positions | 
| 10/29/1991 | US5061961 Dielectric member core support and locating device | 
| 10/29/1991 | US5061959 Photographic recording apparatus having photoconductive drum cartridge unit with automatically closed openings | 
| 10/29/1991 | US5061958 Display of user selectable paper feed options | 
| 10/23/1991 | EP0453143A2 Fibrillated pultruded electrical component | 
| 10/23/1991 | EP0453058A2 Apparatus for forming an image on a record medium | 
| 10/23/1991 | EP0452856A2 Electrophotographic apparatus | 
| 10/23/1991 | EP0452855A2 A copying machine provided with a recirculating document feeding apparatus | 
| 10/23/1991 | EP0452818A2 Electrostatic recorder and electrostatic latent image measuring instrument | 
| 10/23/1991 | EP0452795A2 Transfer apparatus | 
| 10/23/1991 | EP0326558B1 Non-mechanical printing or copying unit with an exposure system arranged in the development region | 
| 10/23/1991 | EP0325599B1 Device for filling toner from a transfer container into a toner storage container | 
| 10/22/1991 | US5060025 Single-sheet page printer for duplex and simplex operation | 
| 10/22/1991 | US5060016 Process unit for image forming apparatus, including a charging brush | 
| 10/22/1991 | US5060015 Air flow controlling system for an image recording apparatus | 
| 10/22/1991 | US5060014 Image forming apparatus and detachable process kit utilizing a drum charging means in relatively light contact pressure therewith | 
| 10/22/1991 | US5059991 Dustproof transparent member | 
| 10/15/1991 | US5057936 Copy quality monitoring | 
| 10/15/1991 | US5057876 Image forming apparatus with an image editing function | 
| 10/15/1991 | US5057874 Paper conveying apparatus | 
| 10/15/1991 | US5057873 Method of cleaning a transfer drum of an electrophotographic apparatus | 
| 10/15/1991 | US5057867 Image forming apparatus which corrects the image forming factors in response to density sensing means and duration of inactive state | 
| 10/09/1991 | EP0450395A2 Image recording apparatus | 
| 10/08/1991 | US5055882 Developing agent dispersing unit for an image forming apparatus | 
| 10/08/1991 | US5055876 Image formation apparatus having a process cartridge acting as guidance for a medium | 
| 10/03/1991 | WO1991015805A1 A switchon-switchoff, multistate, interactive, antiphotocopying, antifraud and antifaxing system | 
| 10/02/1991 | EP0449527A2 Cleaning blade and producing method thereof | 
| 10/01/1991 | US5053885 Copier with auto scaling, auto paper select, and window scaling | 
| 10/01/1991 | US5053830 Fixing apparatus having sheet separator pawls for image forming apparatus | 
| 10/01/1991 | US5053818 Method and apparatus for copying semi-transparent originals using a black backing member | 
| 10/01/1991 | US5053817 Supporting and driving mechanism for a rotating body | 
| 10/01/1991 | US5053816 Apparatus for detecting whether a replaceable cartridge is new or used in an image forming apparatus | 
| 10/01/1991 | US5053813 Electrophotographic copying apparatus having two copy-start keys | 
| 10/01/1991 | US5052670 Image-forming machine | 
| 10/01/1991 | US5052090 Flange unit for a photoconductor drum and photoconductor drum unit | 
| 10/01/1991 | CA1290006C Offset electrostatic printer and imaging process utilizing heated air | 
| 09/25/1991 | EP0448039A2 Electrographic image forming apparatus | 
| 09/24/1991 | US5051866 Power circuit device for an image-forming apparatus | 
| 09/24/1991 | US5051783 Cam for shifting a transfer device and a cleaning device | 
| 09/24/1991 | US5051779 Job control sheet for image processing system | 
| 09/24/1991 | US5051778 Electrophotographic copying machine which integrates components having substantially equal service lives into respective detachable units formed of a developing unit, a photoreceptor unit and a toner cartridge unit | 
| 09/24/1991 | US5051332 Latent images and development, cleaning | 
| 09/24/1991 | CA1289613C Automatic copier show-around erase system | 
| 09/24/1991 | CA1289612C Automatic copier signature set production | 
| 09/17/1991 | US5049945 Image forming apparatus with a simplified paper unjamming mechanism | 
| 09/17/1991 | US5049940 Image forming apparatus | 
| 09/17/1991 | US5049935 Electrophotographic image forming apparatus with reversal development | 
| 09/17/1991 | US5049934 Image forming apparatus having image transfer means | 
| 09/17/1991 | US5049929 Conflict resolution with warning in a reprographic system | 
| 09/11/1991 | EP0445718A2 Image forming apparatus having function of dust removal | 
| 09/10/1991 | US5047807 Development apparatus having a plate scavenging device | 
| 09/10/1991 | US5047803 Image forming apparatus with detachably mountable process cartridge | 
| 09/10/1991 | US5047801 Color image forming apparatus having the developing means and cleaning means formed as a detachable unit | 
| 09/03/1991 | US5046166 Digital electrophotographic copying apparatus | 
| 09/03/1991 | US5045885 Link mechanism provided between an upper frame and a lower frame of an image forming apparatus | 
| 09/03/1991 | US5045880 Pre-programming during job run | 
| 09/03/1991 | US5045879 Image forming apparatus using photosensitive toner | 
| 09/03/1991 | US5044619 Control of pre-ordered stock | 
| 08/28/1991 | EP0443784A1 Lighting unit, and image formation apparatus with it | 
| 08/28/1991 | EP0443612A1 Controller of motors | 
| 08/28/1991 | EP0443461A2 Process cartridge and image forming apparatus usable with same | 
| 08/27/1991 | US5043864 Image forming apparatus | 
| 08/27/1991 | US5043769 Cleaning device | 
| 08/27/1991 | US5043766 Exposure control apparatus for variable magnification copying machine | 
| 08/27/1991 | US5043765 Image forming apparatus including control means responsive to image forming conditions | 
| 08/27/1991 | US5043760 Carrier particle loosening device |