Image forming apparatus

Details Image forming apparatus Image forming apparatus

1989-04-14

1990-04-03

Evans, Arthur G.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

346154, G01D 1500

Patent

active

049144596

ABSTRACT:
An electrophotographic copier, facsimile machine, laser printer or similar image forming apparatus for reproducing an image on a paper sheet by transforming an image signal representative of the image into an image forming signal by pulse width modulation, causing a spot beam in the form of a laser beam which is modulated by the image forming signal to scan a photoconductive element to form an electrostatic latent image thereon, developing the latent image to render it visible, and transferring the visible image to a paper sheet. The laser beam output, the set pulse widths of the image forming signal (beam turn-on times) and the bias voltage for development are changed in association with the deterioration of the laser beam power and the sensitivity of the photoconductive element.

REFERENCES:
patent: 4283785 (1981-08-01), Miyauchi et al.

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