Typewriting machines – Typing by other than type-face or type-die – Character formation by impact
Patent
1989-03-22
1991-08-13
Wiecking, David A.
Typewriting machines
Typing by other than type-face or type-die
Character formation by impact
4001573, 101 9303, B41J 228, B41J 230
Patent
active
050392387
ABSTRACT:
In a dot-matrix printer including a wire-dot print head having print wires which print dots by impact on a printing medium, and a sensor for sensing the position of the print wires and generating signals indicating the position of the print wires, a parameter is set to determine a printing force with which each of the print wires impacts the printing medium. A control and driving circuit drives the print wire responsive to the signals from the sensors and the set parameter. The combination of the feature of setting a parameter for controlling the printing force and the feature of detecting the position of the print wire enables the control over printing force with a high reproducibility. So printing with an optimum printing force is ensured.
REFERENCES:
patent: 4192230 (1980-03-01), Blom
patent: 4347786 (1982-09-01), Sweat, Jr. et al.
patent: 4348119 (1982-09-01), Carson
patent: 4740094 (1988-04-01), Ueda
IBM Technical Disclosure Bulletin, vol. 29, No. 3, Aug. 1986, pp. 1412-1413.
Ishimizu Hideaki
Kikuchi Hiroshi
Komori Chihiro
Tanuma Jiro
Kelley Steven S.
OKI Electric Industry Co., Ltd.
Wiecking David A.
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