Patents
Patents for H04N 1 - Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof (142,802)
10/1987
10/13/1987US4700236 Image processing apparatus with improved gamma-correction
10/13/1987US4700235 Method and apparatus for producing half-tone printing forms with rotated screens on the basis of randomly selected screen threshold values
10/13/1987US4700234 Image processing system
10/13/1987US4700233 Image sensors having alternating arrays of high and low sensitivity picture elements
10/13/1987US4700206 Image formation apparatus
10/13/1987US4700201 Dot corrected laser printer
10/13/1987US4700149 Matching beam modulators
10/13/1987US4700071 Method of recording and reproducing an electron microscope image
10/13/1987US4700066 Light beam scanning apparatus for reading out or recording an image
10/13/1987US4700061 Optical reader
10/13/1987US4700058 Film writing system with closed loop control for electronic images
10/13/1987US4699498 Image projector with liquid crystal light shutter
10/13/1987US4699446 Dynamic power control for an external cavity stabilized laser diode in a holographic scanner
10/13/1987US4699365 Recirculating document feeder
10/13/1987US4699034 Roll paper handling apparatus
10/08/1987WO1987006089A1 Digital color image processing method employing histogram normalization for tone and color reproduction
10/08/1987WO1987006088A1 Apparatus and method for controlling a thermal printer apparatus
10/08/1987WO1987006016A1 Scanning apparatus
10/08/1987WO1987006015A1 Scanning apparatus
10/07/1987EP0240384A1 Memory imaging system
10/07/1987EP0240347A2 Raster output scanners
10/07/1987EP0240202A1 Halftone image printing device
10/07/1987EP0240002A2 A laser recording apparatus
10/07/1987EP0240000A2 Apparatus for separating electromagnetic waves
10/07/1987EP0239955A2 Solid state image sensor with cell array of amorphous semiconductor photoelectric converting elements
10/07/1987EP0239936A2 A tresholding algorithm selection apparatus
10/07/1987EP0239840A2 Soft copy display of facsimile images
10/06/1987US4698778 Method of processing gradation information with variable magnification
10/06/1987US4698691 Halftone image processing method
10/06/1987US4698690 Image signal processor
10/06/1987US4698689 Progressive image transmission
10/06/1987US4698688 Image processing system
10/06/1987US4698669 Color picture reader and method for operating the same
10/06/1987US4698648 Image recording method and apparatus such as a light beam multiformat camera
10/06/1987US4698647 High resolution photographic film printer
10/06/1987US4698646 Thermal transfer recording system
10/06/1987US4698511 Document sheet size or position recognition device
10/06/1987US4698131 Abutted composite assembly gives document-width scanning and ease of repair
10/06/1987US4697910 Image processor
10/06/1987CA1227867A1 Image transmission
10/06/1987CA1227755A1 Method and apparatus for the recognition of hues and colors
10/06/1987CA1227696A1 Thermal transfer color printer for printing on sheets of paper
10/01/1987DE3709442A1 Data entry device
09/1987
09/30/1987EP0239480A1 Method for reproducing a picture starting from the digitization of the picture
09/30/1987EP0238976A2 Method of tint generation and apparatus therefor
09/24/1987WO1987005768A1 Workstation for use with a digital image communications network
09/24/1987WO1987005767A1 Communication system having a control channel and an image channel
09/24/1987WO1987005766A1 High resolution optical scanner
09/24/1987DE3708272A1 Image information reading device
09/23/1987EP0238254A2 Data compression using block list transform
09/23/1987EP0238034A2 Pixel-density conversion technique for continuous-tone image
09/23/1987EP0238027A2 Optical character recognition apparatus
09/23/1987EP0237940A2 Manual copying apparatus
09/22/1987US4695902 Color video printer includes a color viewer and image adjustment controls which are inhibited during exposure
09/22/1987US4695898 Facsimile machine using cut sheets of paper
09/22/1987US4695897 Image building apparatus
09/22/1987US4695896 Image forming apparatus
09/22/1987US4695895 Image processing system
09/22/1987US4695889 Charge accumulation read-out device with simultaneously read multiple output signals
09/22/1987US4695884 Correction of shading effects in video images
09/22/1987US4695859 Thin film light emitting diode, photonic circuit employing said diode imager employing said circuits
09/22/1987US4695849 Recording apparatus
09/22/1987US4695846 Ink-jet recording process
09/22/1987US4695726 Radiation image reproducing method and apparatus
09/22/1987US4695722 Optical scanner error compensator
09/22/1987US4695717 Semi-conductor device and electronic apparatus using the same
09/22/1987US4695678 Electronic device carrier
09/17/1987DE3708288A1 Method for reducing the amount of data for image coding
09/16/1987EP0237023A1 Radiation image read-out apparatus
09/16/1987EP0236781A2 Image data processing method and apparatus therefor
09/16/1987EP0236594A1 Method of and device for recognizing half-tone image information
09/16/1987EP0236481A1 Electrostatic printing apparatus
09/16/1987EP0236454A1 Contrast control for an electrostatic printer
09/15/1987US4694502 Color image reading apparatus
09/15/1987US4694456 Information signal reproducing apparatus
09/15/1987US4694357 Apparatus and method for video signal processing
09/15/1987US4694356 Modification of color component video signals to compensate for decreasing white sensitivity of photographic element
09/15/1987US4694355 Black and white level adjustment and normalization circuit for a color video printer
09/15/1987US4694354 Method and apparatus for printing trimming instructions for developer of photographs
09/15/1987US4694353 Digital scanner
09/15/1987US4694352 Image information processing system
09/15/1987US4694351 Picture signal processing apparatus
09/15/1987US4694336 Digital data transmission method
09/15/1987US4694332 Color image reader
09/15/1987US4694221 Device for the restitution and/or analyzing of color images using line-type fiber optics cathode ray tube
09/15/1987US4694164 Light beam scanning apparatus
09/15/1987US4694163 Apparatus for scanning sheet-shaped recording medium with a bending roller
09/15/1987US4694156 Pixel placement sensing arrangement using split detecting elements
09/15/1987US4693548 Device for recording information on a photosensitive medium for electrophotography
09/15/1987US4693459 Sheet feeding system in recording apparatus
09/12/1987CN86206431U Portable intelligent terminal for chinese character communication
09/09/1987EP0236080A2 Laser Beam printer
09/09/1987EP0235902A1 Digital image processing
09/09/1987EP0235631A2 Method of forming halftone screen
09/09/1987EP0235618A2 Copying apparatus for laser beam records or the like combined with a sheet film or sheet handling apparatus
09/09/1987EP0235398A1 Method and apparatus for producing a composite record from visually distinguishable images
09/09/1987EP0235200A1 Document scanning system with multi-camera overlap elimination arrangement
09/09/1987EP0148887B1 Disc film scanning apparatus
09/09/1987CN87101889A Optical storage
09/08/1987US4692879 Method of and apparatus for forming the address signals of a screen memory of a half tone dot generator