Print head control

Typewriting machines – Carriage or carriage-moving or movement-regulating mechanism – Carriage-feed mechanism

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Details

400124, 400317, 400322, 318 87, B41J 1900

Patent

active

042036798

ABSTRACT:
A printer for printing characters on paper supported adjacent a path along which a print head can be traversed. Two servo-motors are mounted adjacent the path and each connected to the head by a toothed belt. Control means connects the servo-motors in one of two modes: in the first, one servo-motor is energized to pull the head on a printing traverse while the other servo-motor is connected as a dynamic brake; and in the other, the other servo-motor is energized to pull the head on a fly-back traverse while the other servo-motor idles. To stop the head either in a printing traverse or at the end of a fly-back traverse, the mode of connection of the control means is reversed.

REFERENCES:
patent: 3218529 (1965-11-01), Evans et al.
patent: 3236351 (1966-02-01), Fitch et al.
patent: 3244955 (1966-04-01), Turner et al.
patent: 3891077 (1975-06-01), Sauerbrunn
patent: 4075636 (1978-02-01), Galetto et al.
patent: 4076111 (1978-02-01), Robinson et al.

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