Printing timing correction device in shuttle type dot line print

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

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Details

101 9304, 101 9309, 400121, 400320, 400328, B41J 1930

Patent

active

045070024

ABSTRACT:
A printing timing correction device in a shuttle type dot line printer wherein a shuttle is reciprocated in directions perpendicularly intersecting a direction of feeding printing paper, printing needles regularly arranged on the shuttle are projected to recording paper to thereby conduct desirable printing operations and the shuttle performs non-constant velocity motion for which the rotation of a driving motor is transmitted by a crank mechanism.
The printing timings are varied against the printing needles performing non-constant velocity motion in accordance with the speed of the printing needles, whereby the printings are performed at equal interval positions on the printing paper. This correction is performed by varying the delay time periods of signals fed to the printing needle driving device.

REFERENCES:
patent: 4020939 (1977-05-01), Quaif et al.
patent: 4024941 (1977-05-01), Sekikawa et al.
patent: 4076111 (1978-02-01), Robinson et al.
patent: 4116567 (1978-09-01), San Pietro
patent: 4119383 (1978-10-01), Watanabe et al.
patent: 4180334 (1979-12-01), Watanabe et al.

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