Image forming apparatus having light beam intensity switching fo

Details Image forming apparatus having light beam intensity switching fo Image forming apparatus having light beam intensity switching fo

1992-05-11

1993-11-23

Grimley, A. T.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

358298, G01D 942

Patent

active

052648710

ABSTRACT:
An image forming apparatus for forming an image by using a scanning light beam includes a light beam generator for generating a light beam and for modulating the light beam in accordance with an image signal, a scanner for scanning a photosensitive member with the light beam, and a beam detector for detecting the light beam scanned by the scanning means at a predetermined position along the scanning path. Setting circuitry switches and sets a pixel density of an image to be formed. The light quantity of the light beam is controlled in accordance with the pixel density set by the setting circuitry, and/or the light beam detection level of the detector is switched in accordance with the pixel density set by the setting circuitry.

REFERENCES:
patent: 4768043 (1988-08-01), Saito et al.
patent: 4862289 (1989-08-01), Shimada
patent: 4872025 (1989-10-01), Sekiya et al.
patent: 5017944 (1991-05-01), Kitamura et al.

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