Image forming apparatus and image forming method that concentrat

Details Image forming apparatus and image forming method that concentrat Image forming apparatus and image forming method that concentrat

1996-10-11

1999-12-07

Le, N.

Incremental printing of symbolic information

Electric marking apparatus or processes

Electrostatic

347131, B41J 240, B41J 2405

Patent

active

059992026

ABSTRACT:
An image forming apparatus and an image forming method in which a latent image is formed by scanning the surface of an image bearing body with a laser light blinking in accordance with pulse-width modulation based on an image signal. Output-control-wave generating device generates an output control wave having a peak for a write time of each picture element. The output control wave is turned on and off by a gate circuit with timing determined by an exposure control signal generated by exposure control device. A signal output by the gate circuit is converted by a V/I converter into a driving current wave for controlling radiation of a laser light by an exposure unit. In this way, exposure energy produced by the exposure unit can be concentrated on an exposure time duration of each picture element, allowing the amount of mutual interference among picture elements to be reduced.

REFERENCES:
patent: 4914459 (1990-04-01), Mama et al.

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