Image-forming apparatus

Details Image-forming apparatus Image-forming apparatus

1993-02-26

1995-05-16

Reinhart, Mark J.

Incremental printing of symbolic information

Electric marking apparatus or processes

Electrostatic

347247, B41J 2435

Patent

active

054165067

ABSTRACT:
An image forming apparatus which comprises a laser light source, a light beam scanning unit which scans an image receiving member with a light beam, and an optical system for forming a spot of the light beam, which has a predetermined diameter. The light beam is modulated by a pulse modulation unit based on the density data of an image. The size of picture elements formed on the image receiving member is a function of parameters of the laser scanning unit and the pulse modulation unit, and the spot size is designed at least 1.7 times as large as the corresponding size of picture elements.

REFERENCES:
Noise Perception on Electrophotography, Dooley et al., Journal of Applied Photographic Engineering, 5(4):190-196 (1979).

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