Image bar printer compensated for vibration-generated scan line

Details Image bar printer compensated for vibration-generated scan line Image bar printer compensated for vibration-generated scan line

1987-12-30

1989-01-31

Braun, Fred L.

Photocopying

Projection printing and copying cameras

Illumination systems or details

346160, 355 1, 355 14E, 358300, G03B 2772

Patent

active

048019780

ABSTRACT:
In an electronic printer which utilizes an image write bar, a control circuit is provided to compensate for the effects of vibration in a rotating photoconductive member, typically a photoreceptor drum. In one embodiment an encoder is positioned so as to detect spatial displacements of indicia affixed to the photoconductor surface, Correction signals are generated and sent to control circuits which adjust the on/off timing of the write bar operation and/or the intensity of the image bar output. This adjustment results in compensation for the effects of photoconductor vibration.

REFERENCES:
patent: 4193679 (1980-03-01), Mochizuki et al.
patent: 4307409 (1981-11-01), Greenig et al.
patent: 4414583 (1983-11-01), Hooker
patent: 4472046 (1984-09-01), Kohyama
patent: 4477175 (1986-10-01), Snelling
patent: 4699497 (1987-10-01), Hinton et al.
patent: 4699502 (1987-10-01), Araki et al.
patent: 4701670 (1987-10-01), Watanabe et al.
patent: 4711566 (1987-12-01), Evans

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