Intermittent paper feed mechanism

Details Intermittent paper feed mechanism Intermittent paper feed mechanism

1980-12-19

1982-09-14

Sewell, Paul T.

Typewriting machines

For line-spacing by incremental rotation of platen

By gear train

400571, 400577, 226157, 74126, B41J 1978, F16H 2702

Patent

active

043492878

ABSTRACT:
An intermittent paper feed mechanism comprises a driving wheel rotationally driven in an intermittent manner, a driven wheel disposed opposite to and rotated by the driving wheel, a stopper means for restricting the angle of rotation of the driving wheel and a coiled return spring for biasing the driving wheel in a direction opposite to its rotational driven direction. The driving and driven wheels, the stopper means and the return spring are coaxially mounted on a common shaft. The device of the invention enables a paper on which characters are printed by a printing head to be advanced at a high accuracy in an intermittent manner without using a stepping pulse motor.

REFERENCES:
patent: 3138961 (1964-06-01), Busch
patent: 3422941 (1969-01-01), Fredell
patent: 4050569 (1977-09-01), Crump et al.

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