Raster output scanner with process direction spot position contr

Details Raster output scanner with process direction spot position contr Raster output scanner with process direction spot position contr

1991-08-05

1994-02-15

Reinhart, Mark J.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

359206, H04N 121

Patent

active

052871258

ABSTRACT:
Compensation for process direction photoreceptor motion in a Raster Output Scan system is provided by moving the cylinder lens located between the laser source and a rotating spot scanning mechanism, e.g., a polygon. The cylinder lens is moved in the process direction in response to error signals generated by a SOS detector and timing marks on the photoreceptor drum surface, or an encoder on the drum shaft. The lens movement is obtained by sending motion error signals to a piezoelectric actuator which increases in length to impart the desired motion to the cylinder lens.

REFERENCES:
patent: 4040096 (1977-08-01), Starkweather
patent: 4121883 (1978-10-01), Goshima et al.
patent: 4404596 (1983-09-01), Juergensen et al.
patent: 4453170 (1985-06-01), Arao
patent: 4600837 (1986-07-01), DiStefano et al.
patent: 4660094 (1987-04-01), Yoshimoto et al.
patent: 4858019 (1989-08-01), Ohara et al.
patent: 4971413 (1990-11-01), Inoue

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