| 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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| 12/10/1991 | US5072260 Image forming apparatus having analog and digital exposure means |
| 12/10/1991 | US5072245 Image recording apparatus employing optical and heat energy to record image |
| 12/10/1991 | US5072244 Superposed image forming apparatus with plural and adjustable image forming stations |
| 12/10/1991 | US5072119 Radiation image read-out apparatus and erasing apparatus |
| 12/10/1991 | US5072117 Radiation image read-out apparatus |
| 12/10/1991 | US5072114 Light beam scanning apparatus and light beam adjusting mechanism for use with such light beam scanning apparatus |
| 12/07/1991 | CA2043774A1 Data retrieval system, display apparatus and method of recording and displaying |
| 12/05/1991 | DE4017164A1 Engraving of photogravure printing cylinders - involves machine which can handle cylinders with different line spacings |
| 12/05/1991 | DE4017155A1 Facsimile transmission system - has image data converted to two dimensional spectral representation for transmission |
| 12/04/1991 | EP0459792A2 Electronic document processing systems |
| 12/04/1991 | EP0459646A2 Facsimile broadcasting receiver |
| 12/04/1991 | EP0459573A2 Optical article for multicolour imaging |
| 12/04/1991 | EP0459389A2 Image signal processing apparatus |
| 12/04/1991 | EP0459350A2 Method of and apparatus for generating image data representing integrated image |
| 12/04/1991 | EP0458978A1 Picture filing device and method thereof |
| 12/04/1991 | EP0458966A1 Mixed matrix image processing for rendering halftone images with variable dot sizes. |
| 12/04/1991 | EP0458964A1 Bidirectional hot melt ink jet printing. |
| 12/04/1991 | EP0458960A1 Method and apparatus for halftone image reproduction by forming an image dot using plural and differently exposed sublines |
| 12/04/1991 | EP0458935A1 Flare light compensation |
| 12/04/1991 | EP0458791A1 Payphone system. |
| 12/04/1991 | EP0458785A1 Device for producing separation films for print reproduction |
| 12/03/1991 | US5070532 Method for encoding color images |
| 12/03/1991 | US5070531 Method of and means for processing image data |
| 12/03/1991 | US5070467 Method and apparatus for combination information display and input operations |
| 12/03/1991 | US5070415 Image reading apparatus having a low friction member between the conveying roller and the transparent plate |
| 12/03/1991 | US5070414 Method and apparatus for reading image information formed on material |
| 12/03/1991 | US5070413 Color digital halftoning with vector error diffusion |
| 12/03/1991 | US5070412 Apparatus for generating an enlargement/reduction signal |
| 12/03/1991 | US5070411 Color image recording apparatus using masks for forming latent images on photosensitive recording medium with detection and control of color-separated light components |
| 12/03/1991 | US5070410 Apparatus and method using a combined read/write head for processing and storing read signals and for providing firing signals to thermally actuated ink ejection elements |
| 12/03/1991 | US5070409 Liquid crystal display device with display holding device |
| 12/03/1991 | US5070404 Method and apparatus for contemporaneous delivery of data |
| 12/03/1991 | US5070374 Color image forming apparatus |
| 12/03/1991 | US5070367 Color image forming apparatus with an automatic color selection mode |
| 12/03/1991 | US5070345 Interlaced ink jet printing |
| 12/03/1991 | US5070236 Image sensor with load capacitors formed from common and individual electrodes |
| 12/03/1991 | EP0483132A4 Apparatus and method for producing color corrected reproduction of coloured original images. |
| 12/02/1991 | WO1991019376A1 Real time transformation between colour spaces |
| 12/02/1991 | CA2083823A1 Real time transformation between colour spaces |
| 11/28/1991 | WO1991018479A1 Block adaptive linear predictive coding with adaptive gain and bias |
| 11/28/1991 | WO1991018473A1 Storage and retrieval of images having artificially enhanced color regions |
| 11/28/1991 | WO1991018472A2 A signal processing circuit for performing a pipelined matrix multiplication upon signals from several linear sensors |
| 11/28/1991 | WO1991018471A1 Pulse count modulation for thermal printing |
| 11/28/1991 | WO1991018470A1 Method and apparatus for compensating for sensitivity variations in the output of a solid state image sensor |
| 11/28/1991 | WO1991018469A1 Facsimile device having function of changing over linear density |
| 11/28/1991 | WO1991018366A1 A method of detecting skew in form images |
| 11/28/1991 | WO1991018361A1 Method and apparatus for encoding and decoding using wavelet-packets |
| 11/28/1991 | WO1991016784A3 Printing cylinder engraving |
| 11/28/1991 | DE4016833A1 Scanning large flat images for electronic storage and processing - using small hand scanner mounted in plotter covering large areas with accurate alignment of adjacent scanned sections |
| 11/27/1991 | EP0458693A2 Document data input system for a scanner |
| 11/27/1991 | EP0458650A2 Method and apparatus for interlaced multicolor printing |
| 11/27/1991 | EP0458540A2 Communication apparatus |
| 11/27/1991 | EP0458492A1 Beam splitter apparatus with adjustable image focus and registration |
| 11/27/1991 | EP0458346A1 Electrophotographic photosensitive member, and electrophotographic apparatus and facsimile employing the same |
| 11/27/1991 | EP0458308A2 Method of eliminating noise |
| 11/27/1991 | EP0458270A2 Diplay unit |
| 11/27/1991 | EP0249633B1 Copying apparatus and method with editing and production control capability |
| 11/26/1991 | US5068914 Apparatus for reducing artifacts in error diffused images |
| 11/26/1991 | US5068913 Image reader with platen criterial mark for determining document scan start |
| 11/26/1991 | US5068910 Image signal processor for reading dark and light characters from light and dark backgrounds respectively |
| 11/26/1991 | US5068905 Scaler gate array for scaling image data |
| 11/26/1991 | US5068904 Image memory circuit for use in a rotation of image data |
| 11/26/1991 | US5068888 Interactive facsimile information retrieval system and method |
| 11/26/1991 | US5068810 Process for the determination of colorimetric differences between two screen pattern fields printed by a printing machine and process for the color control or ink regulation of the print of a printing machine |
| 11/26/1991 | US5068803 Method and apparatus for filling contours in digital typefaces |
| 11/26/1991 | US5068747 Image reading apparatus |
| 11/26/1991 | US5068746 Image processing apparatus |
| 11/26/1991 | US5068745 Image filing method |
| 11/26/1991 | US5068744 Picture data compressing and recording apparatus for recording components of the picture independently |
| 11/26/1991 | US5068743 Facsimile recording apparatus with page cutting or continuous feed mode depending on mode setting or on number of pages to be received |
| 11/26/1991 | US5068741 Image output apparatus for reproducing, adjacent each other, leading image data portions of plural image units |
| 11/26/1991 | US5068739 Method to image transparent media utilizing integrated scanning |
| 11/26/1991 | US5068731 Video image enlargement and reduction system and method |
| 11/26/1991 | US5068677 Laser scanner with selected plural beam sources |
| 11/26/1991 | US5068676 Image data storing device for an image forming apparatus |
| 11/26/1991 | US5068675 Facsimile apparatus having heat fixation device |
| 11/26/1991 | US5068526 Photoelectric conversion device with voltage source means |
| 11/26/1991 | CA1292581C Color-matched printing |
| 11/26/1991 | CA1292555C Method for transmitting a high-resolution image over a narrow-band communication channel |
| 11/26/1991 | CA1292460C Document illuminating apparatus using light sources, a, b, and c in periodic arrays |
| 11/23/1991 | WO1991018382A1 Method and system for displaying color on a computer output device using dithering techniques |
| 11/23/1991 | CA2040715A1 Facsimile machine using thin film electroluminescent device |
| 11/21/1991 | EP0457623A2 Image sensor |
| 11/21/1991 | EP0457602A2 Data security in multi-carrier communication systems |
| 11/21/1991 | EP0457588A2 Optical scanner |
| 11/21/1991 | EP0457572A2 Outputting method and apparatus |
| 11/21/1991 | EP0457562A1 Control data array modification |
| 11/21/1991 | EP0457537A2 Color image processing apparatus |
| 11/21/1991 | EP0457519A2 Apparatus for generating a screened reproduction of an image |
| 11/21/1991 | EP0457511A2 Apparatus for generating a screened reproduction of an image |
| 11/21/1991 | EP0457482A1 Scanning method and apparatus |
| 11/21/1991 | EP0457427A2 Apparatus for sharpening a colour image |
| 11/21/1991 | EP0457330A2 Image forming apparatus |
| 11/21/1991 | EP0457281A2 Image reading apparatus |
| 11/21/1991 | EP0457229A2 Printing apparatus and information processing apparatus using the same |
| 11/21/1991 | EP0457192A1 Solid-state image pick-up device having electric field for accelerating electric charges from photo-electric converting region to shift register |
| 11/21/1991 | EP0457039A2 Pixel-depth converter for a computer video display |
| 11/21/1991 | EP0456954A2 Scanner with retractable roller feed |
| 11/21/1991 | EP0456832A1 Method and apparatus for color image processing |
| 11/21/1991 | EP0456816A1 Histogram/variance mechanism for detecting presence of an edge within block of image data |