Print hammer in dot printer

Details Print hammer in dot printer Print hammer in dot printer

1979-06-01

1981-12-08

Pieprz, William

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9348, B41J 310

Patent

active

043044956

ABSTRACT:
A print hammer in a dot printer is formed with a contactor secured to the free end portion of a leaf spring or to a contactor base provided on the free end portion of the leaf spring. The contactor is made of a wear-resistive alloy selected from the group consisting of platinum group metal alloys, alloys of platinum group metal and transition metal, and alloys of platinum group metal, transition metal and boron.

REFERENCES:
patent: 3905294 (1975-09-01), Barrus et al.
patent: 3924528 (1975-12-01), Ludin
patent: 3941051 (1976-03-01), Barrus et al.
patent: 4044668 (1977-08-01), Barrus et al.
patent: 4121517 (1978-10-01), Dobson
patent: 4155660 (1979-05-01), Takahashi et al.
Skinner, "No Work Print Hammer", IBM Technical Disclosure Bulletin, vol. 21, No. 11, pp. 4452-4453, 4/79.

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