Typewriting machines – Typing by other than type-face or type-die – Character formation by impact
Patent
1982-09-17
1984-07-03
Sewell, Paul T.
Typewriting machines
Typing by other than type-face or type-die
Character formation by impact
101 9305, 400121, 310328, B41J 312
Patent
active
044576366
ABSTRACT:
A method of and an apparatus for actuating printing elements, particularly in matrix printers, is provided. The printing elements undergo a deflection at their free end by electronic measures. At one of their ends the printing elements are driven by at least one stationary clamped drive element, while their free end undergoes a deflection which due to the configuration of the printing element is substantially greater than the deflection of the driven end. The deflection of the free end may be measured and the measured value may be used for the abated return. The drive element operates piezoelectrically or magnetostrictively. The stationary clamping may be effected by a bracing element. Each printing element exhibits a cross section tapering towards the free end. This free end may print directly, or may actuate a further printing unit element.
REFERENCES:
patent: 2947886 (1960-08-01), McGunigle
patent: 3937990 (1976-02-01), Winston
patent: 4272200 (1981-06-01), Hehl
IBM Tech. Disc. Bulletin, by M. Jakubowski, vol. 12, No. 3, Aug. 1969, p. 481.
Sewell Paul T.
Smith, Jr. John C.
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