Print head with permanent magnetic bias

Details Print head with permanent magnetic bias Print head with permanent magnetic bias

1983-11-21

1985-11-12

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, B41J 312

Patent

active

045524718

ABSTRACT:
A print head includes a coil carrier having upwardly bent legs serving as yokes and being arranged around or upon a permanent magnet whose outer face is coplanar with the end faces of the yokes; a cover plate is mounted on and in that plane having apertures adjacent the space between the permanent magnet and the closest yoke. A set of armature plates is resiliently mounted on the other side of the cover plate respectively adjacent the apertures which are filled with nonmagnetizable material, and the magnet plate of each armature has affixed to it thin, side-wall type members converging towards a main apex-point to which the stylus is mounted.

REFERENCES:
patent: 4049107 (1977-09-01), Murat
patent: 4401392 (1983-08-01), Blomquist et al.

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