Print head for a dot matrix printer

Details Print head for a dot matrix printer Print head for a dot matrix printer

1990-06-18

1993-05-11

Burr, Edgar S.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, B41J 2235

Patent

active

052095851

ABSTRACT:
A print head for a dot matrix printer has a plurality of print needles slidably mounted in the head, a plurality of armatures operatively connected to the print needles, a plurality of electromagnets for respectively operating the armatures, a center ring for stopping the armature attracted by the electromagnet, and a residual sheet mounted on a core of each of the electromagnets for preventing the armature from sticking to the core.

REFERENCES:
patent: 4105940 (1979-08-01), Cacciola
patent: 4197021 (1980-04-01), Herbert
patent: 4382701 (1983-05-01), Davenport
patent: 4502799 (1985-03-01), Weeks et al.
patent: 5033884 (1991-07-01), Yamada et al.
patent: 5039236 (1991-08-01), Masuda et al.
patent: 5088844 (1992-02-01), Takeuchi et al.

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