| Patents for H04N 1 - Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof (142,802) |
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| 03/11/1981 | EP0024815A1 Background light intensity compensation method and circuit for a line scan camera system |
| 03/11/1981 | EP0024521A1 Apparatus incorporating a linear array scanner for correcting deformities in electronic images produced by the scanner and method of correcting deformities in electronic images produced by linear array scanners |
| 03/10/1981 | US4255767 Electronically controlled magnetic recording |
| 03/10/1981 | US4255766 Facsimile signal superposing system |
| 03/10/1981 | US4255761 Apparatus for mixing image signals to obtain a printing master |
| 03/10/1981 | US4255040 Positive overlay electronic xerographic printer |
| 03/05/1981 | WO1981000659A1 Compressed data restoring system |
| 03/03/1981 | US4254439 Facsimile mid-page restart |
| 03/03/1981 | US4254438 Coding method for facsimile signal |
| 03/03/1981 | US4254425 Electric discharge printing device having a laminar stylus |
| 03/03/1981 | US4253724 Recording optical system |
| 03/03/1981 | CA1096971A1 Method and apparatus for form removal from contour compressed image data |
| 02/24/1981 | US4253102 Optical recording apparatus |
| 02/24/1981 | CA1096484A1 Facsimile receiver with improved fm demodulator |
| 02/24/1981 | CA1096483A1 Method and apparatus for driving facsimile transceivers |
| 02/19/1981 | WO1981000466A1 Autotypical analysis process of toning values |
| 02/18/1981 | EP0023962A1 Document scanning system |
| 02/17/1981 | US4251837 Three decision thresholding mode switch and method for mode selection |
| 02/17/1981 | US4251836 System for broadcasting facsimile signals |
| 02/17/1981 | US4251835 Image-forming system for obscuring poster lines |
| 02/17/1981 | US4251825 Non-impact printer using a modulated light beam |
| 02/17/1981 | US4251824 Liquid jet recording method with variable thermal viscosity modulation |
| 02/17/1981 | US4251822 Recording head |
| 02/17/1981 | US4251821 Character recording device |
| 02/17/1981 | US4251625 Method of producing a halftone picture by vibrating light source |
| 02/17/1981 | US4251153 Multiplexed photocopier system with detachable portable optical reader and memory |
| 02/17/1981 | US4251126 Light beam scanning device with opposed deflecting surfaces |
| 02/17/1981 | US4250810 Centrifugal clamp on a high speed print drum |
| 02/17/1981 | CA1095966A1 Electrostatic printing device |
| 02/11/1981 | EP0023816A1 Image size control apparatus |
| 02/10/1981 | US4250526 Optical information reading device |
| 02/10/1981 | US4250522 Color facsimile previewer |
| 02/10/1981 | US4250488 Device for scanning patterns with a regulated light source |
| 02/10/1981 | CA1095580A1 Apparatus for producing transparencies from signals from a facsimile reader |
| 02/05/1981 | WO1981000320A1 Engraving apparatus having improved frequency and scanning characteristics |
| 02/05/1981 | WO1981000300A1 Electrode assembly for facsimile machine |
| 02/04/1981 | EP0023452A1 Printing apparatus with pulverulent magnetic toner |
| 02/04/1981 | EP0023433A2 High speed ink jet recording apparatus |
| 02/03/1981 | US4249217 Separated sensor array abutment |
| 02/03/1981 | US4249216 Facsimile transceiver apparatus |
| 02/03/1981 | US4248517 Illuminating device for use in a copying apparatus, a facsimile apparatus, and the like |
| 02/03/1981 | US4248495 Projecting optical system with deflected optical axis maintained parallel to next optical axis |
| 02/03/1981 | CA1095164A1 Method of and apparatus for modifying a video signal to prevent unauthorized recording and reproduction thereof |
| 01/27/1981 | US4247874 Photoconductor device for imaging a linear object |
| 01/27/1981 | US4247873 Self-adaptive, all-or-nothing converter of an analog image analysis signal |
| 01/27/1981 | US4247872 Facsimile signal converter |
| 01/27/1981 | US4247799 Cationic dyes absorbing different wavelengths |
| 01/27/1981 | US4247160 Scanner with reflective pyramid error compensation |
| 01/27/1981 | US4246839 Nonimpact printer |
| 01/27/1981 | CA1094632A1 Rotary electrical printer and method |
| 01/21/1981 | EP0022704A1 Image printing array, its manufacturing method and image printing device |
| 01/20/1981 | US4246614 Binary graphic printer system having an electronic screen with shift control suited for rescreening |
| 01/20/1981 | US4246587 Thermal array protection method and apparatus |
| 01/20/1981 | CA1094146A1 No translation available |
| 01/20/1981 | CA1094145A1 No translation available |
| 01/14/1981 | EP0022306A1 Method and arrangement for error correction in facsimile transmission |
| 01/13/1981 | US4245260 Method for improved reproduction of edges by engraving screened printing forms |
| 01/13/1981 | US4245259 Inertia drive head for optical scanning and readout |
| 01/13/1981 | US4245258 Method and apparatus for reduction of false contours in electrically screened images |
| 01/13/1981 | US4245257 Transmission method and system for facsimile signal |
| 01/13/1981 | US4245247 Hard copy reproduction from video disc information |
| 01/13/1981 | US4245238 Non-linear processing of video image vertical detail information |
| 01/13/1981 | US4245164 Solid state image pickup device |
| 01/13/1981 | CA1093682A1 Method and apparatus for obscuring the raster lines in a photograph of a video monitor screen |
| 01/07/1981 | EP0021853A1 Self-scanned arrays of photosensors |
| 01/07/1981 | EP0021831A1 Pixel clock circuit and method of operating a raster imaging device |
| 01/07/1981 | EP0021754A1 Electro-optic modulator and use of the same |
| 01/07/1981 | EP0021389A1 Ink printing device for the printing of a recording support |
| 01/07/1981 | EP0021096A1 Imaging apparatus for generating electrical signals and its use in facsimile imaging apparatus |
| 01/07/1981 | EP0021094A1 Raster scanned rotating display system |
| 01/07/1981 | EP0021093A1 Apparatus for transmitting source radiation to a surface and for receiving radiation from the surface |
| 01/07/1981 | EP0020897A2 Device for determining the optimum scanning angle of printed matter |
| 01/07/1981 | EP0020494A1 Reproductive procedure for original models, which are explored in as much as concerns their degree of coloring, by a three component method. |
| 01/06/1981 | US4244007 Facsimile receiver signalling |
| 01/06/1981 | US4244005 Method and apparatus for avoiding or minimizing unwanted line-structures in the electronic reproduction of images |
| 01/06/1981 | US4244004 Method for analog-digital conversion, and a picture reproduction method employing the same |
| 01/06/1981 | US4243876 Background light intensity compensation circuit for a line scan camera system |
| 01/06/1981 | US4243294 Method and apparatus for generating synchronizing signal for a beam scanner |
| 12/30/1980 | US4242707 Digital scene storage |
| 12/30/1980 | US4242703 Projection apparatus for optical systems |
| 12/30/1980 | US4242701 Color hardcopy from electronic information |
| 12/30/1980 | US4242694 Solid-state color imaging device |
| 12/30/1980 | US4241990 Multi-purpose optical data processor |
| 12/30/1980 | CA1092700A1 Luminescent screen laser scanning technique |
| 12/24/1980 | WO1980002819A1 Laser device for manufacturing printing plates |
| 12/23/1980 | US4241415 Masking device for selectively preventing visualization of data from a data output system |
| 12/16/1980 | US4240118 Method for electro-optically sensing, transmitting pictorial information |
| 12/16/1980 | US4240117 Apparatus for electro-optically recording pictorial information for a facsimile transmission system |
| 12/16/1980 | US4239383 Illumination means for electrographic reproduction |
| 12/16/1980 | CA1091750A1 Digital half-tone grey scale expansion system |
| 12/10/1980 | EP0020076A1 Optical scanning system |
| 12/10/1980 | EP0019878A1 Time-axis picture-signal converter for facsimile and the like |
| 12/10/1980 | EP0019777A1 Electronically abutting parts of an electronic image produced by linear arrays of photosensitive elements |
| 12/10/1980 | EP0019694A2 Processor controlled printing device and operation thereof |
| 12/09/1980 | US4238775 Facsimile receiver signaling |
| 12/02/1980 | US4237495 Circuit for doubling the number of output bits of a photodiode array |
| 12/02/1980 | US4237494 Facsimile system |
| 12/02/1980 | US4237481 Image reproduction using sharp and unsharp signals |
| 12/02/1980 | US4236813 Multiplex photocopier system having plural scanners without memory |
| 12/02/1980 | CA1090868A1 Screen for electrophotographic printing machines |