Print head for a dot printer

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

1979-09-19

1981-06-16

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, B41J 312

Patent

active

042734525

ABSTRACT:
A print head for a dot printer consisting of electromagnet units for driving a plurality of print wires, wherein the electromagnet unit is formed of a plurality of electromagnets and a plurality of armatures which are all assembled into a single magnetic circuit member; and the magnetic circuit member comprises a boss common to the electromagnets, yokes formed of radially arranged arms extending from the boss and parallel arranged arms extending in parallel from the outer ends of the radially arranged arms substantially at right angles thereto, magnetizing pole pieces extending from the intermediate portions of the radially arranged arms in parallel with the parallel arranged arms, and a yoke arm deformation-preventing ring connected to the outer ends of all the parallel arranged arms.

REFERENCES:
patent: 3896918 (1975-07-01), Schneider

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