Dot printer head

Details Dot printer head Dot printer head

1990-04-11

1991-10-15

Burr, Edgar S.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 4305, B41J 310

Patent

active

050569422

ABSTRACT:
According to the present invention, a plurality of cores with electromagnetic coils wound thereon are arranged annularly on one side of a polygonal plate-like yoke; a plurality of armatures with needles connected thereto are opposed to end faces of the cores; there is provided a polygonal, side magnetic path plate which has side magnetic paths each positioned between adjacent such armatures and which holds the armatures so as to permit the armatures to rise and fall; support rod portions coupled magnetically to the corners of the side magnetic path plate are formed on the yoke; and magnetic flux is passed through the support rod portions and the corners of the side magnetic path plate.

REFERENCES:
patent: 4737042 (1988-04-01), Hayashi et al.
patent: 4812061 (1989-03-01), Tsuyuki
patent: 4944615 (1990-07-01), Kato et al.

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