Apparatus for correcting positional deviation of light source em

Details Apparatus for correcting positional deviation of light source em Apparatus for correcting positional deviation of light source em

1996-11-18

1999-03-09

Le, N.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

347238, 347241, 369119, 369121, G03G 1504

Patent

active

058807667

ABSTRACT:
An apparatus for correcting positional deviation of the light source emitting light beams in an image recording apparatus is disclosed which corrects change of the image size (dimensions of the image) on the photosensitive member due to positional deviations of beam spots on the photosensitive member on account of physical distortions caused by external vibration, temperature change, and the like. Changes in the diameter of detective light beams are measured by photodetecting portions 5.sub.R and 5.sub.L and piezoelectric devices 6a and 6b are driven based on the results of the detection, whereby the semiconductor laser array 1 is moved so that the multiplication b/a for the image size may be kept constant.

REFERENCES:
patent: 4590490 (1986-05-01), Takanashi et al.
patent: 5043744 (1991-08-01), Fantuzzo et al.
patent: 5442171 (1995-08-01), Anzai
patent: 5627670 (1997-05-01), Minoura et al.
patent: 5671077 (1997-09-01), Imakawa et al.
patent: 5703860 (1997-12-01), Fukunaga et al.

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