| Patents for G03G 13 - Electrographic processes using a charge pattern (6,148) |
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| 07/30/1991 | US5036362 Sequential development with magnetic and non-magnetic toner |
| 07/30/1991 | US5035973 Image forming method and apparatus therefor |
| 07/23/1991 | US5034778 Background cleaning system for liquid developer imaging apparatus |
| 07/23/1991 | US5034298 Toner compositions and processes thereof |
| 07/20/1991 | CA2032798A1 Color electrophotography for high quality half-tone images |
| 07/17/1991 | EP0437330A2 Di- and tricationic negative charge control agents for toner composition |
| 07/17/1991 | EP0437073A2 Toner developed electrostatic imaging process for outdoor signs |
| 07/16/1991 | US5031570 Printing apparatus and toner/developer delivery system therefor |
| 07/09/1991 | US5030530 Charging photoconductor, light exposure through negative film, electrophoresis; uniformity |
| 07/03/1991 | EP0404825A4 Improved liquid toner composition |
| 07/02/1991 | US5028503 Photohardenable electrostatic element with improved backtransfer characteristics |
| 07/02/1991 | US5028502 Charge Transport Layer Containing Polystyrene Film Forming Binder And An Aromatic Diamine Or Hydrazone Compound |
| 07/02/1991 | CA1285603C Offset electrostatic imaging process |
| 06/26/1991 | EP0434594A2 Method and materials for producing a printing master |
| 06/26/1991 | EP0433958A2 Reversal development of latent electrostatic images on xeroprinting masters |
| 06/26/1991 | EP0433950A2 Thermally assisted method of transferring small electrostatographic toner particles to a thermoplastic bearing receiver |
| 06/26/1991 | EP0433949A2 Thermally assisted transfer of electrostatographic toner particles to a thermoplastic bearing receiver |
| 06/26/1991 | EP0433381A1 Fusing apparatus and method. |
| 06/25/1991 | US5026620 Using developer with inorganic fine particles of pH 7 or more and grounded heat roller with resin coating containing carbon black |
| 06/20/1991 | CA2032274A1 Reversal development of latent electrostatic images on xeroprinting masters |
| 06/19/1991 | EP0432752A2 Image forming method and image forming apparatus |
| 06/19/1991 | EP0432458A2 Image-wise adhesion layers for printing |
| 06/19/1991 | EP0432302A1 Electrophotography system |
| 06/19/1991 | EP0432211A1 Process and apparatus for producing printing plates. |
| 06/18/1991 | US5025292 Method and apparatus for improving a multi-color electrophotographic image using heat fusing |
| 06/18/1991 | US5025272 Dot exposure type image forming apparatus |
| 06/18/1991 | US5024181 Method for the development of an electrostatic latent image |
| 06/11/1991 | US5023668 Electrographic |
| 06/11/1991 | US5023632 Electrophotographic image forming method |
| 06/11/1991 | US5023038 Method and apparatus for texturizing toner image bearing receiving sheets and product produced thereby |
| 06/05/1991 | EP0430703A2 Xeroprinting process |
| 06/05/1991 | EP0430696A2 Developing process |
| 06/05/1991 | EP0430507A2 Method for fixing a toner image |
| 06/05/1991 | EP0430346A1 Method of and apparatus for forming a multi-colour image |
| 06/05/1991 | EP0430076A2 Image forming method |
| 06/05/1991 | EP0430038A2 Electrophotographic development process |
| 06/04/1991 | US5021838 Preferred toner/carrier properties |
| 06/04/1991 | US5021318 Process for forming secure images |
| 06/04/1991 | US5021313 Image reversal process |
| 05/29/1991 | EP0429309A2 Biasing scheme for improving latitudes in the tri-level xerographic process |
| 05/29/1991 | EP0250556B1 Multicolor electrophotographic reproduction apparatus and method for producing color accented copies |
| 05/28/1991 | US5019869 Toner fusing/finishing device for selecting alternatively the style of finishing on a glossy, matte, or textured print finish |
| 05/28/1991 | US5018640 Multiple color printing method for metallic container and thin plate metal and printed matter |
| 05/23/1991 | DE4036976A1 Electrophotographic moisture reversal developer unit - operates without toner developer on reverse side of electrophotographic photoreceptor between guide and electrode |
| 05/21/1991 | US5018085 Color printing system usable for reproduction of computer-generated images |
| 05/21/1991 | US5017448 Electrophotographic lithographic printing plate precursor |
| 05/16/1991 | WO1991006897A1 Multicolor image transfer method and apparatus |
| 05/16/1991 | DE3937203A1 Electrophotographic laser printing process - using colourless toner with glass transition temp. below 100 deg. C |
| 05/15/1991 | EP0427380A2 Method of producing halftone images |
| 05/14/1991 | US5016054 Apparatus for improving a multi-color electrophotographic image |
| 05/14/1991 | US5015549 Positive or negative latent images, particles with shells and liquid cores of ethylenically unsaturated monomer, a leuco dye and a photoinitiator |
| 05/14/1991 | CA1284003C Fat-desensitizing composition for litho printing plates |
| 05/09/1991 | CA2025000A1 Method of producing halftone images |
| 05/02/1991 | WO1991006044A1 Color image forming method |
| 05/02/1991 | EP0424576A1 Xeroprinting process using reversal development process |
| 04/30/1991 | US5012300 Two-color imaging system and process |
| 04/30/1991 | US5012288 Dry toner development |
| 04/30/1991 | US5011758 Toned pattern on dielectric receiver; electrostatically transferring developed image by reverse photographic process |
| 04/24/1991 | EP0424180A2 Printing apparatus |
| 04/24/1991 | EP0424131A1 Imaging method |
| 04/24/1991 | EP0424093A2 Imaging apparatuses and processes |
| 04/24/1991 | EP0423158A1 Dual color imaging method and apparatus. |
| 04/23/1991 | US5009973 Electrostatic latent images, developers, nonmagnetic toner |
| 04/17/1991 | CN1050777A Photohardenable electrostatic element with improved backtransfer characteristics |
| 04/10/1991 | EP0421685A2 An electrophotographic lithographic printing plate precursor |
| 04/10/1991 | EP0420986A1 Printed metal container and multicolor printing thereof |
| 04/10/1991 | EP0420855A1 Electrostatic method for multicolor imaging from a single toner bath. |
| 04/09/1991 | US5006434 Photohardenable electrostatic element with improved environmental latitude |
| 04/09/1991 | US5006433 Printing plate precursors for electrophotographic plate-making purposes |
| 04/04/1991 | WO1991004518A1 Printing press using charge retaining medium, its manufacturing method and stripping system using charge retaining medium |
| 04/04/1991 | WO1991004516A1 Process for electrostatographically or magnetographically developing a composite colored image |
| 04/04/1991 | WO1991004515A1 Process for transferring an image from a primary to a secondary support |
| 04/04/1991 | WO1991004514A1 Reversible or irreversible production of an image |
| 04/04/1991 | WO1991004153A1 Electro-photographically produced offset printing plate with hydrophilic tonered areas and oleophilic untonered areas |
| 04/03/1991 | EP0420557A2 Belt type transfer device |
| 04/03/1991 | EP0420201A2 Cleaning method for use in a copy apparatus |
| 04/03/1991 | EP0420197A2 Image forming method and image forming apparatus |
| 04/03/1991 | EP0420002A2 Electrophotographic recording material |
| 04/02/1991 | US5003917 Developing apparatus with image quality control |
| 03/28/1991 | DE3930667A1 Reversible oder irreversible erzeugung einer abbildung Reversible or irreversible production of a figure |
| 03/28/1991 | CA2026091A1 Electrophotographic copying material |
| 03/27/1991 | EP0418855A1 Photohardenable electrostatic element with improved backtransfer characteristics |
| 03/27/1991 | EP0418300A1 Method for fusing developed image. |
| 03/22/1991 | CA2025680A1 Photohardenable electrostatic element with improved backtransfer characteristics |
| 03/21/1991 | WO1991003773A1 Methods and apparatus for texturizing toner image bearing receiving sheets and product produced thereby |
| 03/21/1991 | WO1991003771A1 Toner fixing method and apparatus and image bearing receiving sheet |
| 03/20/1991 | EP0165319B1 Method of forming image |
| 03/20/1991 | CN2073596U Developing pot adding less developer |
| 03/19/1991 | US5001517 Developing apparatus for reverse-developing an electrostatic latent image |
| 03/19/1991 | US5001030 Method and means for transferring electrostatically charged image powder |
| 03/19/1991 | US5001029 Electrophotographic lithographic printing plate precursor |
| 03/19/1991 | US5001028 Electrophotographic method using hard magnetic carrier particles |
| 03/19/1991 | CA1281582C Color filter elements |
| 03/14/1991 | DE3930584A1 Auf elektrophotographischem wege hergestellte offsetdruckplatte mit hydrophilen betonerten bereichen und oleophilen unbetonerten bereichen Produced by electrophotographic paths offset printing plate with hydrophilic and oleophilic areas tonered untoned areas |
| 03/13/1991 | EP0416591A2 Electrophotographic light-sensitive material |
| 03/12/1991 | US4999272 Electrophotographic analog and digital imaging and developing using magnetic toner |
| 03/08/1991 | WO1991004517A1 Toning method and member for electrostatography |
| 03/08/1991 | CA2065275A1 Toning method and member for electrostatography |
| 03/07/1991 | WO1991003007A1 Imaging method and apparatus |
| 03/06/1991 | EP0415701A2 Printing apparatus and method for forming images on a substrate |