Method and apparatus for recording a flat field image
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United States of America Patent
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Sep 25, 2001
Grant Date -
N/A
app pub date -
Apr 22, 1999
filing date -
Apr 22, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention features a flat field image printing apparatus. The printing apparatus includes: a light source responsive to an image modulated signal and producing a image modulated light beam; a beam deflector supported for rotary motion to deflect the image modulated light beam onto an image recording medium in response to the rotary motion; and a lens assembly configured to convert the deflected image modulated light beam into an achromatic focused beam spot which moves repeatedly in a first scan direction and over a range of scan angles to provide a highly resolved printed image across the recording medium. In other aspects, the invention features a high-speed printing apparatus employing multiple light sources, and an achromatic f-theta lens for use in such printing apparati.
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