Method and apparatus for diode-laser imaging with compensation f

Details Method and apparatus for diode-laser imaging with compensation f Method and apparatus for diode-laser imaging with compensation f

1997-12-12

2000-06-06

Le, N.

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Electric marking apparatus or processes

Electrostatic

347233, 347258, B41J 2385

Patent

active

060725117

ABSTRACT:
Compensation for the effects of duty cycle on the output level of an imaging device, and for the effects of periodically varying distance between the output of the imaging device and its target, is accomplished electronically. An exemplary apparatus includes a source of radiation (generally a laser) having an output level that varies both with an input power level and, undesirably, with the duty cycle. The radiation source is operated to produce, on the recording surface, an imagewise pattern of spots, and an adjustment facility compensates for output-level variations resulting from duty cycle--that is, from the recent pattern of laser activity.

REFERENCES:
patent: 5174205 (1992-12-01), Kline et al.
patent: 5822345 (1998-10-01), Sousa et al.

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