Backlash reduction

Details Backlash reduction Backlash reduction

2006-01-17

2006-01-17

Lefkowitz, Edward (Department: 2858)

Typewriting machines

Sheet or web

For feeding sheet from stack or pack holder

C400S582000, C271S270000

Reexamination Certificate

active

06986615

ABSTRACT:
Backlash is reduced by stopping substrate short of a printing position, then slowly advancing the drive system to move the substrate to the printing position. Where a stepper motor drives a driven roller via a gear train, the stepper motor stops the substrate a predetermined number of steps shy of the printing position. The stepper motor is then advanced by the predetermined number of steps, taking up backlash and moving the substrate to the printing position.

REFERENCES:
patent: 4519700 (1985-05-01), Barker et al.
patent: 5149217 (1992-09-01), Narita
patent: 5961224 (1999-10-01), Baitz et al.
patent: 6312177 (2001-11-01), Nureki
patent: 6520701 (2003-02-01), Kaya

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