Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1998-02-10
1999-08-24
Le, Que T.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
382275, H01J 4014
Patent
active
059427450
ABSTRACT:
In a digital imaging system including an array of imaging devices that apply an image to a recording medium such as a lithographic printing plate, elimination or reduction of longitudinal imaging artifacts is accomplished by blending the zones imaged by each the devices. In the course of a complete scan of the recording medium, the imaging devices each traverse a series of longitudinal columns of dot locations, and the devices are fired only at appropriate dot locations as determined by the digital image data. By operating adjacent imaging devices such that the zones they would ordinarily cover are blended, artifacts at the boundary between zones (such as seams) are hidden. While sufficient visual disruption to eliminate artifacts is ensured, noticeable visual artifacts are not created as a consequence of the disruption.
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Cabana Glenn E.
Kline John F.
Le Que T.
Presstek Inc.
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