Reciprocative typing control system

Details Reciprocative typing control system Reciprocative typing control system

1987-03-11

1988-06-21

Pieprz, William

Typewriting machines

Carriage or carriage-moving or movement-regulating mechanism

Carriage-feed mechanism

400306, B41J 1950, B41J 1958

Patent

active

047521449

ABSTRACT:
A reciprocative typing control system in which a typing head is driven reciprocally for typing letters at periodic separations in response to a typing signal A following a delay D. A timing signal is produced each time the head is driven by a predetermined distance less than the letter separation and the timing signals counted. In the forward direction a typing signal is produced when the count equals the number of timing signals totaling the separation. In the backward direction the typing signal is produced when the count plus the number of timing signals in delay D equals the number of timing signals totaling the separation.

REFERENCES:
patent: 4169683 (1979-10-01), Bernardis et al.
patent: 4210404 (1980-07-01), Hanger
patent: 4213714 (1980-07-01), Jones et al.
patent: 4284362 (1981-08-01), Jackson et al.
patent: 4343012 (1982-08-01), Knapp

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