Dot printing apparatus

Details Dot printing apparatus Dot printing apparatus

1992-06-23

1993-03-02

Eickholt, Eugene H.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, 310316, 310317, 4001572, B41J 302

Patent

active

051903830

ABSTRACT:
A dot printing apparatus in which the piezoelectric print head having the piezoelectric element connected to the printing wire is utilized and the secondary bounce of the printing wire is effectively controlled according to one of three dot printing modes (the normal continuous dot printing mode, the last dot printing mode in the continuous dot printing mode and the single dot printing mode), is disclosed. The dot is judged every time the dot printing is performed. And if judged the normal dot printing mode, the discharging of the piezoelectric element is conducted relatively fast after the dot printing in the present printing pitch is performed to charge the piezoelectric element, since the dot printing data exists in one or more printing pitches both before and after the present printing pitch, thus, the dot printing in printing pitch next to the present printing pitch is performed. And if judged the last dot printing mode, the electric energy stored in the piezoelectric element is partially removed at the first timing according to the discharging pulse with relatively narrow width, thereafter, the remained electric energy is completely removed. And further, if judged the single dot printing mode, the electric energy stored in the piezoelectric element is partially removed at the second timing later than the first timing according to the discharging pulse with the width wider than that in the last dot printing mode, thereafter, the remained electric energy is completely removed.

REFERENCES:
patent: 4348119 (1982-09-01), Carson, Jr. et al.
patent: 4737924 (1988-04-01), Miki
patent: 4743821 (1988-05-01), Hall
patent: 4810113 (1989-03-01), Itoh et al.
patent: 4844635 (1989-07-01), Malkemes
patent: 4850724 (1989-07-01), Fattori
patent: 4866326 (1989-09-01), Niikawa et al.
patent: 4947074 (1990-08-01), Suzuki
patent: 5030020 (1991-07-01), Kikuchi et al.
patent: 5039237 (1991-08-01), Tanuma et al.
patent: 5039238 (1991-08-01), Kikuchi et al.
patent: 5078517 (1992-01-01), Hiroshi et al.
patent: 5147141 (1992-09-01), Sakaida
IBM Technical disclosure Bulletin vol. 27, No. 12 dated May 1985 "Electronic Print Hammer Damping".

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