Patents
Sitemap › G03 - Photography; Cinematography; Analogous techniques using waves other than optical waves; Electrography; Holography › G03G - Electrography; Electrophotography; Magnetography › G03G 13 - Electrographic processes using a charge pattern
Patents for G03G 13 - Electrographic processes using a charge pattern (6,148)
02/1990
02/13/1990US4901114 Tri level xerography using a MICR toner in combination with a non-MICR toner
02/07/1990EP0354030A2 Development system
02/06/1990US4898797 Multiple xeroprinted copies from a single exposure using photosensitive film buffer element
01/1990
01/31/1990EP0352334A1 Method of forming electrophotograph
01/30/1990US4897677 Multicolored printing method and device
01/30/1990US4897333 Copying method
01/30/1990US4897331 Reversal image forming method
01/30/1990US4897330 Image forming method
01/30/1990US4897329 Method for preparing a lithographic printing plate and a light-sensitive material used therefor
01/30/1990US4897327 Correct-reading images from photopolymer electrographic master
01/17/1990EP0350901A2 Image reading method
01/16/1990US4894679 Method and apparatus for use in transferring an image
01/16/1990CA1264426A1 Magnetic brush abrasion development of imaging sheets employing photosensitive microcapsules
01/09/1990US4892798 Electrophoretic imaging metal-toner fluid dispersion
01/03/1990EP0349345A2 An electrophotographic lithographic printing plate precursor and a method of developing the same
01/03/1990EP0349249A2 An electrophotographic lithographic printing plate precursor and a method of developing the same
01/03/1990EP0348868A2 An electrophotographic photosensitive element and a process for manufacturing an offset printing master from the element
01/03/1990EP0348844A2 Electrophotographic process
01/02/1990US4891673 Development system
01/02/1990US4891287 Image editing method
12/1989
12/27/1989EP0347918A1 Method for forming electrophotographic images
12/27/1989CA1264023A1 Electrophotographic color proofing method
12/26/1989US4890139 Image forming apparatus
12/20/1989CN1006146B Improved color reproduction process
12/19/1989US4888619 Multi-color image forming apparatus for forming a latent image pattern by use of residual toner remaining in a developing device
12/14/1989WO1989012258A2 Method for fusing developed image
12/14/1989WO1989012257A2 Dual color imaging method and apparatus
12/12/1989US4886730 Supplementing developer with replacement of different composition to maintain proper charge and extend life
12/06/1989EP0345010A2 Method and apparatus for use in transferring an image
12/05/1989US4885222 Method for developing electrostatic latent image in an oscillating electric field
12/05/1989US4885221 Electrophotography apparatus and electrophtographic process for developing positive image from positive or negative film
11/1989
11/29/1989EP0343924A2 Liquid developer compositions
11/29/1989EP0343853A1 Process for generating two-color images
11/29/1989EP0343666A2 Correct-reading images from photopolymer electrographic master
11/29/1989EP0343185A1 Electrostatographic method and apparatus for producing multicolor duplex reproductions
11/29/1989EP0343167A1 Image reversal process
11/28/1989US4883732 Method of forming printing plate using isoindolenine deratives
11/28/1989US4883731 Xeroprinting process
11/22/1989CN1037406A Developing device for xerography latent image
11/21/1989US4882257 Electrophotographic device
11/21/1989US4882248 Alkali and/or alcohol soluble polymer, electrically conductive hydrophilic base; lithography; sensitivity, durability
11/21/1989US4882247 Preventing image distortion when using multiple toners
11/14/1989US4880718 Electrophotographic recording element with isoindolenine derivatives
11/14/1989US4880715 Imaging system
11/08/1989EP0340996A2 Tri-level, highlight color imaging using ionography
11/08/1989EP0340603A2 Color image production method
11/07/1989US4879196 Electrophotographic method for reversal or positive-positive image formation
11/07/1989US4879194 Tri-level, highlight color imaging using ionography
11/02/1989EP0339244A2 Method of transfering a reproduction from a primary support to a secondary support
10/1989
10/31/1989US4877699 Electrophotographic luminescent amplification process
10/31/1989US4877698 Electrophotographic process for generating two-color images using liquid developer
10/19/1989DE3911405A1 Printing plate for electrophotographic plate production
10/18/1989EP0336962A1 Electrophotographic method and apparatus
10/17/1989US4875080 Method of and apparatus for developing electrophotographic film using liquid developer
10/11/1989EP0336610A1 Reprographic process and sheet material for use in such process
10/11/1989CN1036276A Process for preparing positive and negative images using photohardenable electrostatic master
10/10/1989US4873551 Developing apparatus using magnetic carrier under AC field
10/10/1989US4873540 Image recording method
10/05/1989WO1989009433A1 Electrostatic method for multicolor imaging from a single toner bath
10/03/1989US4871640 Applying light transmissive toner, heat fixing to give diffusive surface; then repeating process but melting to give smooth surface
10/03/1989US4871407 Selectively heating toner image, expansion,removal by peeling
10/03/1989CA1262073A1 Process for preparing printing forms
09/1989
09/27/1989EP0334518A2 Image forming apparatus
09/27/1989EP0334099A2 Image forming method
09/26/1989US4869992 Tough and brittle polymers
09/26/1989US4869981 Electrostatic method for multicolor imaging from a single toner bath
09/26/1989CA1261191A1 Electrophotographic devices containing overcoated amorphous silicon compositions
09/19/1989US4868608 Highlight color imaging apparatus
09/19/1989US4868085 Developer for developing electrostatic images and process for forming images
09/19/1989US4868075 Electrophotographic imaging process
09/19/1989CA1259517A1 Electrophotographic recording material
09/13/1989EP0332468A2 Image forming apparatus
09/13/1989EP0332428A2 Image forming method
09/12/1989US4865936 Charging developer with polarity opposite to that of latent el ectrostatic image
09/06/1989EP0331426A2 Image forming method and image forming apparatus
09/06/1989EP0331425A2 Image forming method and image forming apparatus
09/05/1989US4864331 Offset electrostatic imaging process
08/1989
08/30/1989EP0330498A2 Non-magnetic toner
08/29/1989US4862213 Image forming apparatus and method
08/24/1989DE3804449A1 Electrophotographic image generation process
08/23/1989CN1035006A Photo hardening electrostatic printing mould containing eletron donor and donee
08/22/1989US4859557 Reverse photographic process
08/22/1989US4859555 Electrophotographic printing plate comprising disazo and perynone compounds, hole transport material and alkali soluble resin
08/22/1989US4859551 Process for preparing positive and negative images using photohardenable electrostatic master
08/22/1989US4859550 Smear resistant magnetic image character recognition processes
08/16/1989EP0139020B1 Electrophotography method
08/09/1989EP0326941A2 Image forming apparatus
08/02/1989EP0326132A2 Electrophotographic lithographic printing plate precursor
08/01/1989US4853307 Imaging member containing a copolymer of styrene and ethyl acrylate
07/1989
07/26/1989EP0325258A2 Electrophotographic lithographic printing plate precursor
07/18/1989US4849314 Photopolymerization
07/13/1989WO1989006375A1 Master and master transport assembly registration system
07/11/1989US4847658 Image forming apparatus and image forming method employed therefor
07/11/1989US4847655 Highlight color imaging apparatus
07/05/1989EP0323252A2 Apparatus for electrophotographic process
07/05/1989EP0323143A2 Electronic color printing system with sonic toner release development
07/05/1989EP0322940A1 Dry toner development
07/05/1989EP0322536A2 Photosensitive member for inputting digital light
07/04/1989US4845524 Image forming method
06/1989
06/29/1989WO1989005999A1 Method of forming electrophotograph
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