Print head having rolled spring arms with uniform response

Details Print head having rolled spring arms with uniform response Print head having rolled spring arms with uniform response

1986-06-26

1987-11-03

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, 267161, B41J 312, F16F 134

Patent

active

047040416

ABSTRACT:
A print head for use in an impact printer has resilient driving arms for actuating print hammer or print elements at a high speed. The arms extend radially inwardly, and are connected together at their outer ends and formed of a single rolled metal. The arms differ in at least one of length, width, thickness or shape, according to the angles that the longitudinal directions of the hammers make with the direction in which the metal has been rolled, so that the hammer can have the same natural frequency or produce the same resilient force.

REFERENCES:
patent: 4225250 (1980-09-01), Wagner
patent: 4493567 (1985-01-01), Tada
IBM Tech. Disc. Bulletin, R. L. Herman, vol. 27, No. 4B, Sep. 1984, pp. 2564-2565.

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