Printer for continuous form with justification control

Details Printer for continuous form with justification control Printer for continuous form with justification control

1988-05-18

1990-03-27

Evans, Arthur G.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

346107R, G01D 1500

Patent

active

049124900

ABSTRACT:
A justification system for use in an electrophotographic printer. The justification system comprises a detector which detects pulses occuring at intervals each covering a segment of a continuous form. A counter coupled to the detector counts the number of main scannings over the surface of a photoconductive drum during the time to feed each segment, as confirmed in the detector. The counted value is compared with a reference value by a differential arithmetic unit, the output of which is fed to a speed control to control the feed speed of the continuous form. This compensates for the fluctuations in printing positions of each segment due to systematic errors such, as expansion of the continuous form.

REFERENCES:
patent: 4761662 (1988-08-01), Yoshimoto et al.
U.S. Ser. No. 177,352, filed Apr. 1988, Kita et al.
U.S. Ser. No. 194,298, filed May 16, 1988, Negoro.
U.S. Ser. No. 195,661, filed Sep. 26, 1989, Negishi et al.
U.S. Ser. No. 218,866, filed Jul., 1988, Negoro et al.

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