Image forming apparatus which corrects a deviation in a distance

Details Image forming apparatus which corrects a deviation in a distance Image forming apparatus which corrects a deviation in a distance

1994-06-23

1996-12-10

Reinhart, Mark J.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

347250, H04N 121

Patent

active

055835570

ABSTRACT:
In an image forming apparatus for simultaneously recording plural image lines on a recording medium by scanning simultaneously with plural light beams along parallel scanning lines in a primary scanning direction, two light beam detectors each having a starting-side are arranged in such a way that the starting-sides are not in parallel to each other so that the distance between the starting-sides differs depending on the scanning line. The difference in the distances of two light beams is measured, and the deviation between the two light beams is determined on the basis of the difference in the distances.

REFERENCES:
patent: 4206348 (1980-06-01), Davy et al.
patent: 4714960 (1987-12-01), Laakmann
patent: 5105296 (1992-04-01), Cho et al.
IBM Technical Disclosure Bulletin, vol. 15, No. 1, Jun. 1992, New York, pp. 5-6; D. H. Casler et al, "Deflection Sensor for Optical Scanners".

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