Apparatus for controlling reversing duration of hammer bank in s

Details Apparatus for controlling reversing duration of hammer bank in s Apparatus for controlling reversing duration of hammer bank in s

1990-02-12

1991-10-22

Eickholt, Eugene H.

Typewriting machines

Carriage or carriage-moving or movement-regulating mechanism

Carriage-feed mechanism

101 9304, B41J 1930, B41J 300

Patent

active

050590472

ABSTRACT:
A shuttle printer carries out printing on a printing paper when a hammer bank shuttles back and fourth. At the beginning of the hammer bank reversal at the right or left end in the hammer bank shuttling path, a braking force is exerted to a shuttle motor which drives the hammer bank and an acceleration force is exerted to the shuttle motor immediately after the hammer bank turns around. In order to set a reversing duration of the hammer bank at constant, the braking force and the acceleration force exerting durations are prolonged from a predetermined minimum to a value when the hammer bank reversing duration is shortened to an extent as desired, whereby a printing paper can be fed a predetermined amount within the hammer bank reversing duration as desired.

REFERENCES:
patent: 3941051 (1976-03-01), Barrus et al.
patent: 4180766 (1979-12-01), Matula
patent: 4473313 (1984-09-01), Nakano et al.
patent: 4480541 (1984-11-01), Grummett
patent: 4507002 (1985-03-01), Matsumoto et al.
patent: 4637307 (1987-01-01), Miller
patent: 4819556 (1989-04-01), Abe et al.
patent: 4854756 (1989-08-01), McCrimmon, Jr. et al.
patent: 4899052 (1989-12-01), Matsumoto

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