Method of driving wire-dot print head

Details Method of driving wire-dot print head Method of driving wire-dot print head

1992-10-19

1994-04-12

Wiecking, David A.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

4001573, 400167, 101 9302, 101 9303, 101 9305, B41J 230

Patent

active

053020359

ABSTRACT:
To suppress a secondary bound of a print wire of a dot matrix printer which may occur after a single dot or continuous dots are printed and also to prevent both density variation of printed characters and printing ghost from occurring, a braking pulse is applied after application of a printing pulse in the case of printing the single dot and after a printing pulse of the trailing print cycle in the case of printing the continuous dots. The duration of the braking pulse to be applied after the application of the printing pulse in the trailing print cycle of the continuous dot printing is set to be shorter than the duration of the braking pulse applied after the printing pulse in the case of printing the single dot.

REFERENCES:
patent: 4102265 (1978-07-01), Deetz
patent: 4162858 (1979-07-01), Brandenburg
patent: 4291992 (1981-09-01), Barr et al.
patent: 4333398 (1982-06-01), Carson, Jr. et al.
patent: 4569607 (1986-02-01), Takemoto
patent: 5167459 (1992-12-01), Yano et al.
W. T. Pimbley; "Settle Out Control for Moving Print Hammer"; IBM TDB; vol. 21, No. 6, Nov. 1978; pp. 2283-2284.

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