Dot matrix print head assembly

Details Dot matrix print head assembly Dot matrix print head assembly

1988-05-06

1989-12-12

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, B41J 312

Patent

active

048863815

ABSTRACT:
A dot matrix print head assembly comprising a plurality of print wire members mounted in a wire guide housing and being operably associated with rigid armature members and electromagnet units in an electromagnetic drive housing with a transverse pivotal edge on each of the armature members pivotally supported by a flat pole end surface; the electromagnetic unit comprising a coil and a bobbin connected to a printed circuit board; and the electromagnetic unit being surrounded by and fixedly located within a block of plastic material.

REFERENCES:
patent: 4049107 (1977-09-01), Murat
patent: 4230038 (1980-10-01), Hebert
patent: 4433927 (1984-02-01), Cavallari
patent: 4600321 (1986-07-01), Kwan
patent: 4613242 (1986-09-01), Forsyth
patent: 4626115 (1986-12-01), Norigoe

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