| Patents for G03G 13 - Electrographic processes using a charge pattern (6,148) |
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| 06/02/1981 | CA1102170A1 Method for two-color development of a xerographic charge pattern |
| 06/02/1981 | CA1102168A1 Electrophotographic photosensitive material suitable for offset printing and lithography and process for production thereof |
| 05/20/1981 | EP0028680A1 Process of, and means for charging an imaging element in an electrophotographic machine |
| 05/19/1981 | US4268750 Realtime radiation exposure monitor and control apparatus |
| 05/19/1981 | US4268615 Method for producing relief |
| 05/19/1981 | US4268597 Method, apparatus and compositions for liquid development of electrostatic images |
| 05/19/1981 | US4268161 Electrophotographic apparatus with corona discharge control |
| 05/19/1981 | US4268158 Dry planographic printing apparatus |
| 05/19/1981 | CA1101262A1 Improving image sharpness by applying uv light to a dye sensitized photoconductive layer |
| 05/13/1981 | EP0028261A1 Improved photon detector |
| 05/13/1981 | EP0028260A1 Apparatus for imaging objects |
| 05/12/1981 | US4266869 Apparatus and method for making lithographic printing plates |
| 05/06/1981 | EP0028137A1 Dry planographic printing plate |
| 05/05/1981 | US4265998 Electrophotographic photoreceptive background areas cleaned by backcharge process |
| 05/05/1981 | US4265987 Zinc and/or cadmium sulfide, chromic acid |
| 05/05/1981 | US4265197 Developing method and apparatus using application of first and second alternating bias voltages for latent image end portions and tone gradation, respectively |
| 05/05/1981 | CA1100566A1 Dry planographic printing plate and printing method employing the same |
| 05/05/1981 | CA1100371A1 Driographic master |
| 04/29/1981 | EP0027614A1 Process for producing printing formes |
| 04/28/1981 | US4264185 Two color electrostatographic apparatus |
| 04/21/1981 | US4263391 Liquid development process with porous elastic development cleaning roller |
| 04/21/1981 | US4263387 Lithographic printing plate and process for making same |
| 04/21/1981 | CA1099600A1 Process for fixing toner images |
| 04/14/1981 | US4262075 Method of electrophotography |
| 04/07/1981 | US4259905 Waterless planographic printing plate with polysiloxane coating |
| 04/07/1981 | CA1098750A1 Image formation method and apparatus using translucent non-photosensitive particles |
| 03/31/1981 | US4259429 Protection of toner images |
| 03/31/1981 | US4259427 Ferromagnetic and dielectric toner particles |
| 03/31/1981 | US4259422 Electrographic process for making transparencies |
| 03/24/1981 | US4258116 Organic semiconductor |
| 03/24/1981 | US4257347 Process and apparatus for electrophotographic development of latent images on sheet-like carriers |
| 03/17/1981 | US4256824 Method using positively charged electrophotographic toner containing amido dialkyl hydroxy ammonium compound |
| 03/17/1981 | US4256820 Method of electrophotography using low intensity exposive |
| 03/03/1981 | USRE30535 Developing device in electrophotographic copying apparatus |
| 03/03/1981 | US4254204 Toner, core and secondary particles |
| 03/03/1981 | US4254203 Dry process developing method employing magnetic toner |
| 03/03/1981 | US4254202 Electrostatic copying process |
| 03/03/1981 | US4254196 Method of preparing lithoplates and plate |
| 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 | CA1096222A1 Electrographic liquid developers containing azo dye marking particles derived from 2,3-naphthalenediol or derivatives thereof |
| 02/17/1981 | US4251612 Carbon or graphite dispersed in polymer, hole injecting material, hole transport layer |
| 02/17/1981 | US4251611 Process for formation of permanent image |
| 02/10/1981 | US4250239 Color electrostatographic process and material |
| 02/03/1981 | US4248951 By modulating a flow of ions several times by the use of one electrostatic image and preventing the screen from becoming contaminated |
| 02/03/1981 | CA1095114A1 Oxide coated electrode for corna generator |
| 01/27/1981 | CA1094380A1 Dielectric imaging member and imaging process therefor |
| 01/13/1981 | US4245024 Development process for an electrophotographic duplicator employing magnetic toner |
| 01/13/1981 | US4244646 Device and method for producing a number of copies by electrophotographic techniques |
| 01/07/1981 | EP0020855A1 Method and apparatus for calibrating a colour copying apparatus |
| 12/30/1980 | US4242434 Magnetic carrier, measurement of conductivity |
| 12/23/1980 | US4241161 Applying two separate charges |
| 12/23/1980 | US4241160 Multiple copy electrophotographic reproducing method |
| 12/23/1980 | US4240723 Process for electrographic image production and an apparatus for carrying out this process |
| 12/23/1980 | CA1091991A1 Mercapto functional polyorganosiloxane release agents for fusers in electrostatic copiers |
| 12/16/1980 | US4239845 Electrophotographic copying method using two toners on magnetic brush |
| 12/16/1980 | CA1091497A1 Process for electrophotographic image formation by toner transfer using a corona |
| 12/11/1980 | WO1980002785A1 Method of impressing and reading out a surface charge on a multi-layered detector structure |
| 12/09/1980 | US4238562 Transparent resin binder, spirobenzopyran indole, coloring agent |
| 11/27/1980 | WO1980002603A1 Improved photon detector |
| 11/27/1980 | WO1980002602A1 Realtime radiation exposure monitor and control apparatus |
| 11/25/1980 | CA1090408A1 Process for the preparation of printing forms and/or metallized images |
| 11/18/1980 | US4234670 Reducible metal salt-dry electrographic visible image recording process |
| 11/12/1980 | EP0018742A1 Method of improving maximum density and tonal range of electrographic images and an electrographic copying apparatus using the method |
| 11/04/1980 | US4232104 Pore openings, dielectrics |
| 11/04/1980 | CA1088738A1 Electrophotographic liquid developing system |
| 10/28/1980 | US4230783 Process and apparatus for electrophotography |
| 10/15/1980 | EP0017582A1 Improved electrographic development method for use with partially-conductive developer |
| 10/14/1980 | US4228231 Subtractive process for producing multicolor print from single exposure of color original |
| 10/07/1980 | US4226930 Electrophotographic method for producing photopolymer printing plate |
| 09/30/1980 | CA1086562A1 Lithographic printing plate |
| 09/16/1980 | US4222776 Electrophotographic method |
| 09/04/1980 | WO1980001849A1 Duplicating stencil assembly |
| 09/03/1980 | EP0015164A2 Duplicating stencil assembly and method for production thereof |
| 09/02/1980 | US4220699 Method for producing a large number of copies by means of copying apparatus |
| 08/26/1980 | US4219271 Image forming method and device for controlling image density |
| 08/19/1980 | US4218528 Electrophotographic photoreceptor with phthalocyanine in phenol resin binder |
| 08/19/1980 | CA1084102A1 Method of transfer |
| 08/05/1980 | US4216283 Dry transfer of electrophotographic images |
| 08/05/1980 | CA1082973A1 Carrier with coating of resin and copper tetra-4- (octadecylsulfonamido) phthalocyanine and use thereof in colour electrophotographic development |
| 07/22/1980 | US4213693 Electrostatographic apparatus comprising improved developing bias control |
| 07/15/1980 | CA1081523A1 Electrophotographic materials containing sublimable dyes |
| 07/08/1980 | CA1081055A1 Colored xerographic image transfer process |
| 07/01/1980 | US4210448 One-component magnetic toner, corona |
| 06/17/1980 | US4207910 Method and apparatus for building up and reducing the pressure of gases in ionography imaging chambers |
| 06/10/1980 | US4207100 Formation of electrostatic latent image |
| 06/03/1980 | US4206247 Electrophotographic process |
| 05/27/1980 | US4204865 Direct-imaging flexible offset printing plate and method of manufacture |
| 05/13/1980 | US4202913 Method for liquid development of latent electrostatic images |
| 05/13/1980 | CA1077343A1 Lithographic printing plate |
| 04/30/1980 | EP0010375A1 Electrostatographic processing system |
| 04/29/1980 | US4200387 Image reversal electrostatographic apparatus |
| 04/22/1980 | US4199356 Electrophotographic process, of transferring a magnetic toner to a copy member having at least 3×1013 ohm-cm resistance |
| 04/08/1980 | US4197331 Conductive pattern and triboelectric charging used on opposite sides of electrically insulating member to form developable image |
| 04/08/1980 | US4197121 Method of making electrophotographic images with a uniform exposure step |
| 04/08/1980 | US4197119 Electrophotographic process |
| 04/08/1980 | CA1075300A1 Offset printing |
| 04/01/1980 | US4195991 Electrographic recording method of applying an electric field opposite the charge retaining layer |
| 04/01/1980 | US4195591 Cascade assembly and method |
| 03/25/1980 | CA1074169A1 Semiconductive composition containing polymeric binder and a dye with quinoid benzene rings |