Image forming apparatus with anti-banding implementation

Details Image forming apparatus with anti-banding implementation Image forming apparatus with anti-banding implementation

1993-06-16

1994-05-24

Grimley, A. T.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

346160, G01D 942

Patent

active

053153227

ABSTRACT:
An electrophotographic copier, laser printer, facsimile transceiver or similar image forming apparatus of the type having a rotary polygonal mirror. The apparatus detects a position where a laser beam is incident on a photo-conductive element in both a main scanning direction and a subscanning direction. Based on the detected incident position of the laser beam on the photo-conductive element, the laser beam is deflected to produce high quality images free from banding, which can be caused by any one of an irregular configuration of the polygonal mirror, a variation in the moving speed of a photoconductive element, or a variation in the position where a laser beam is incident due to mechanical vibrations.

REFERENCES:
patent: 4233612 (1980-11-01), Hirayama et al.
patent: 4404596 (1983-09-01), Juergensen et al.
patent: 4441126 (1984-04-01), Greenig et al.

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