Accumulator roller synchronization with image size adjustment

Details Accumulator roller synchronization with image size adjustment Accumulator roller synchronization with image size adjustment

1994-01-31

1995-09-12

Pendegrass, Joan H.

Incremental printing of symbolic information

Electric marking apparatus or processes

Electrostatic

355271, 347232, G03G 1501

Patent

active

054501148

ABSTRACT:
During manufacture of each printer (1) image size is corrected while close registration with the optical system (3) is assured by varying the pulses to a stepper motor driving accumulator roller (5). The length of an image printed using the optical sweep pulses to drive the stepper motor is observed and the change in frequency of stepper motor pulses is computed and entered as a factor in each printer of a control pulses system during manufacture. To assure registration with the optical system, the stepper motor is driven by each 200th optical sweep pulses and the control pulse system is reset and then supplies control pulses to the stepper motor until the next 200th optical sweep pulse.

REFERENCES:
patent: 4723145 (1988-02-01), Takada et al.
patent: 5175564 (1992-12-01), Jamzadeh
patent: 5200791 (1993-04-01), Dastin et al.
patent: 5227815 (1993-07-01), Dastin et al.
patent: 5264870 (1993-11-01), Egawa
patent: 5331341 (1994-07-01), Egawa et al.

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