Patents
Sitemap › G03 - Photography; Cinematography; Analogous techniques using waves other than optical waves; Electrography; Holography › G03G - Electrography; Electrophotography; Magnetography › G03G 15 - Apparatus for electrographic processes using a charge pattern
Patents for G03G 15 - Apparatus for electrographic processes using a charge pattern (115,618)
10/1980
10/01/1980EP0016070A1 Developer apparatus for diazotype copy materials
09/1980
09/30/1980CA1086785A1 Pickoff device for copying machine
09/29/1980EP0016110A4 Method for providing electrical connection means in an electrographic element.
09/23/1980US4224601 Electrodynamic printing system
09/23/1980US4224396 Magnetic toner materials containing quaternary ammonium polymers as charge control agents
09/23/1980US4223993 Electrophotographic apparatus
09/23/1980CA1086373A1 Copier document loading system
09/23/1980CA1086231A1 Document copying apparatus with electronic collating memory
09/23/1980CA1086131A1 Transfer assembly for electrostatic transfer of a toner image from a curvilinear recording surface
09/17/1980EP0015686A1 Apparatus for supporting a travelling belt
09/16/1980US4223203 Conformable/non-conformable roll fuser
09/16/1980US4222776 Electrophotographic method
09/16/1980US4222660 Image forming device with automatic mode setting
09/16/1980US4222659 Copying apparatus for sheet originals and thicker originals
09/16/1980US4222497 System and method for monitoring and maintaining a predetermined concentration of material in a fluid carrier
09/16/1980CA1085906A1 Apparatus for electrostatically charging an electrophotographic film
09/16/1980CA1085905A1 Curved screen
09/16/1980CA1085904A1 Duplicating machine employing image reversing optical paths with front edge document alignment on document input and output
09/09/1980US4221480 Belt support and control system
09/09/1980US4221379 Copy stacking tray
09/09/1980CA1085448A1 Corona charging device
09/09/1980CA1085447A1 High efficiency non-cavity radiant method and apparatus
09/09/1980CA1085322A1 Pneumatic brakes
09/09/1980CA1085211A1 Multiple reduction indicators for continuously variable reduction copier machines
09/09/1980CA1085156A1 Development apparatus for use with dry type copying apparatus
09/03/1980EP0014952A1 Holder for the original in reprographic machines
09/03/1980EP0014933A1 Device for supplying toner to an electrophoretic developing apparatus
09/03/1980EP0014932A1 Supply bin for toner concentrate
09/03/1980EP0014752A1 Printer with and method for duplex printed sheet output
09/02/1980US4220699 Method for producing a large number of copies by means of copying apparatus
09/02/1980US4219927 Method of producing a multistylus head device
09/02/1980CA1084982A1 Copying apparatus with a transfer construction for electrostatic or powder images
09/02/1980CA1084981A1 Field lens for an electrophotographic printing machine
09/02/1980CA1084980A1 Deformation imaging in ionographic method and apparatus
09/02/1980CA1084770A1 Image transfer unit for electrophotographic copying machines
09/02/1980CA1084697A1 Toner applicator for electrostatic copier
09/02/1980CA1084695A1 Compositions and method for enhancing electrical life of polymers used in xerographic devices
08/1980
08/26/1980US4219327 Fusion fixing apparatus employing heat and pressure
08/26/1980US4219273 Optical apparatus for electrophotographic copying machine
08/26/1980US4219272 Electrophotographic copier with replaceable photoconductive sheet
08/26/1980US4219271 Image forming method and device for controlling image density
08/26/1980US4219270 Reproducing apparatus
08/26/1980CA1084577A1 Optical printer with character magnification
08/26/1980CA1084575A1 Process for fixing images
08/26/1980CA1084325A1 Dry developer particle of resistivity higher than 10 su14 xx ohm-cm comprising thermoplastic resin and magnetic material
08/20/1980EP0014548A2 Flying spot scanning apparatus
08/20/1980EP0014395A1 Indicator circuit including a bridge circuit with means for error indication independent of voltage source variation
08/19/1980US4218691 Recording apparatus with improved counter electrode
08/19/1980US4218619 Multi-copy ion-valve radiography
08/19/1980US4218499 Intermittent, on long footage of continuous web, such as rolled paper
08/19/1980US4218246 Method of electrophotographic recording involving removal of excess developer liquid by corona treatment
08/19/1980US4218135 Roll sheet cassette loading apparatus
08/19/1980US4218134 Optical system for copier
08/19/1980US4218130 Method for controlling a copying apparatus adapted to print images on opposite surfaces of a copy sheet
08/19/1980US4218129 Electrophotographic apparatus
08/19/1980US4218128 Duplex copying machine
08/19/1980US4218127 Scanning carriage drive system
08/19/1980US4218125 Pneumatic system for supporting a photoconductive surface
08/19/1980US4218124 Photo-sensitive screen for producing electrostatic latent image
08/19/1980US4218055 Apparatus for singularizing stacked dielectric receptor sheets for latent images
08/19/1980US4218054 Apparatus for feeding sheets to ionography imaging chambers
08/19/1980US4217821 Printing apparatus utilizing flexible metal sleeves as ink transfer means
08/19/1980US4217819 Device for the transfer process of characters, consisting of toner, that are applied to a continuously rotating band-shaped intermediate carrier
08/19/1980CA1084107A1 Operating point regulation for a corona discharge device
08/19/1980CA1084104A1 Electrode head
08/19/1980CA1084103A1 Document platen cover for photocopy machine
08/12/1980US4217093 Fixing arrangement in electrostatic copying machine
08/12/1980US4217052 Method for effecting registration for a copying apparatus
08/12/1980US4216740 Developing device for developing electrostatic images with a magnetic brush
08/12/1980CA1083657A1 Electrographic fusing apparatus and method
08/12/1980CA1083655A1 Apparatus for producing collated copies from two sided originals
08/12/1980CA1083520A1 Collator bins
08/06/1980EP0013730A1 Device for transporting an image carrier through a printing station and device for swinging this image carrier on/off an intermediate carrier in the printing station of a printing or copying machine
08/05/1980US4215933 Projection system for copying machines
08/05/1980US4215932 Replenishable photoconductive system
08/05/1980US4215930 Method of maintaining the correct conditions of an electrophotographically duplicated image
08/05/1980US4215929 Image forming method and apparatus capable of controlling an electrostatic image formation area
08/05/1980US4215588 Control device for an intermittently movable driver member
08/05/1980CA1082973A1 Carrier with coating of resin and copper tetra-4- (octadecylsulfonamido) phthalocyanine and use thereof in colour electrophotographic development
08/05/1980CA1082971A1 X-ray system with electrophoretic imaging
07/1980
07/29/1980US4215355 Improved electrographic recording apparatus employing an improved drive circuit
07/29/1980US4215193 Comprising a colorless spheroidal-shaped polymer/ d to ion exchange membrane
07/29/1980US4214935 Process for fusion-bonding of resins
07/29/1980US4214833 Operation timing control system for mechanical apparatus operable under program control
07/29/1980US4214832 Electrostatic copying machine comprising improved document scanning means
07/29/1980US4214831 Apparatus for producing duplex copies
07/29/1980US4214746 Sorting apparatus
07/29/1980US4214740 Sheet reversing mechanism
07/29/1980US4214733 Device for tensioning corona-discharge wires
07/29/1980US4214662 Sheet dispensing device for use with copying machines, and a container for the stack of sheets
07/29/1980US4214549 Roll fuser apparatus and release agent metering system therefor
07/29/1980CA1082614A1 Magnetic toner scavenging system
07/29/1980CA1082449A1 Xerographic development apparatus having a large reservoir for controlled flow through a narrow development zone
07/29/1980CA1082448A1 Developing system for electostatic reproduction machines
07/23/1980EP0013632A1 Sorting apparatus for sorting sheets
07/23/1980EP0013413A1 Apparatus for photocontrolled ion-flow electron radiography
07/22/1980US4214276 Printing methods for producing prints having images of variable size and text
07/22/1980US4214234 Range tracking analog to digital converter for use with a bridge
07/22/1980US4213696 Scan mechanism for a microfilm reader/printer
07/22/1980US4213694 Copy production machines
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