US Patent No: 4,801,950

Number of patents in Portfolio can not be more than 2000

Multi-beam roller phototracer

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Importance

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Abstract

The roller phototracer for producing images on photosensitive films inter alia for the manufacture of printed circuits, comprises a film-holding roller movable in rotation and an optics-carrying slide movable in translation along an axis parallel to the axis of the roller, the optics-carrying slide bearing an optical device optically connected to a laser emitter via at least one space filter and at least one acousto-optical modulator for directing a light beam towards the film or switching of the beam in order to light up or extinguish a set of lines of light spots on the film depending on the rotation of the roller and the elementary movements of the slide. The phototracer is characterised in that it also comprises structure for directing a number of light beams towards the film simultaneously and from the same laser emitter, and structure for bringing about a partial overlap of the light spots on the film.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SOCIETE D'ETUDES ET DE CONSTRUCTIONS DE MACHINES ET APPAREILS INDUSTRIELSALFORTVILLE1

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Frehling, Andre Maisons-Alfort, FR 1 28

Cited Art

Patent Info (Count) # Cites Year
 
DAINIPPON SCREEN MFG. CO., LTD. (1)
4,547,814 Method of recording a halftone picture electronically 16 1982
 
Iwatsu Electric Co., Ltd. (1)
4,513,326 Magnetic printing machine employing a multi-channel recording head with minimal cross-talk with secondary scanning head movement 1 1982

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
EDC BIOSYSTEMS, INC. (7)
6,596,239 Acoustically mediated fluid transfer methods and uses thereof 31 2000
7,083,117 Apparatus and method for droplet steering 2 2002
6,925,856 Non-contact techniques for measuring viscosity and surface tension information of a liquid 4 2002
7,429,359 Source and target management system for high throughput transfer of liquids 0 2003
6,863,362 Acoustically mediated liquid transfer method for generating chemical libraries 13 2003
7,968,060 Wave guide with isolated coupling interface 2 2007
8,137,640 Acoustically mediated fluid transfer methods and uses thereof 0 2007
 
EASTMAN KODAK COMPANY (3)
5,257,038 Focusing laser diode mount on a write head 9 1991
5,214,444 Optical fiber mount and support 20 1991
5,214,445 Multiple laser diode mount assembly with a write head 2 1991
 
PRESSTEK, INC. (3)
5,453,777 Method and apparatus for correcting and adjusting digital image output 35 1993
5,942,745 Method and apparatus for digital imaging with reduced periodic artifacts 7 1998
6,947,153 Method and apparatus for optimized image processing 0 2000
 
XEROX CORPORATION (3)
4,989,019 Multi-beam scanning system compensated for banding 18 1990
5,625,389 Ink-jet print head array and interlace method 19 1994
8,115,795 Two-dimensional ROS emitter geometry with low banding sensitivity 0 2009
 
KODAK I L, LTD. (2)
5,894,342 Imagesetter 0 1996
6,043,865 Imagesetter 5 1998
 
CANON KABUSHIKI KAISHA (1)
6,120,121 Recording apparatus and a method of forming driving data 6 1992
 
CREO SRL (1)
6,637,329 Method for improving registration of images on opposing sides of a printing medium 6 2001
 
DAETWYLER GRAPHICS AG (1)
5,856,648 Method and apparatus for producing wells in the surface of a rotogravure cyclinder with a laser 6 1996
 
FUJI PHOTO FILM CO., LTD. (1)
4,918,465 Multi-color beam scanner with simultaneous scanning along a plurality of scan lines 13 1988
 
HEIDELBERGER DRUCKMASCHINEN AG (1)
5,898,453 Method and apparatus for exposing recording material having a temperature compensated optical isolator 1 1997
 
HITACHI, LTD. (1)
5,666,598 Image forming method and apparatus using energy beam impingement on image forming particles to move the same 10 1995
 
Institut Problem Modelirovania V Energetike Akademii Nauk Ukrainskoi SSR (1)
4,864,555 Optical information carrier, method for erasing information therein, and optical storage device realizing this method 1 1987
 
SEIKO EPSON CORPORATION (1)
7,486,306 Optical writing device and method of manufacturing the same 1 2005
 
The Procter & Gamble Company (1)
7,275,807 Wave guide with isolated coupling interface 2 2003
 
Other [Check patent profile for assignment information] (1)
4,939,716 Optical information carrier 1 1989