Print head

Details Print head Print head

1980-07-03

1982-06-22

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, B41J 312

Patent

active

043359698

ABSTRACT:
A guide member for print needles and a base plate with guide apertures traversed by the rear end of the needles are bolted to a magnetic core element, having annularly arranged poles; a cover is also bolted thereto, sandwiching a case in between. The cover centers an annular element having radial spring arms which hold one end each of a plurality of armatures respectively against the annularly arranged poles. The spring arm ends and the armature ends have interlinked, raised edges for obtaining a hinged link. The other ends of the armatures engage the rear ends of the needles. The annular element carries the respective electromagnetic coils and cores.

REFERENCES:
patent: 3929214 (1975-12-01), Hebert
patent: 4165940 (1979-08-01), Cacciola
patent: 4208138 (1980-06-01), Volke
patent: 4240756 (1980-12-01), Ku et al.
patent: 4244658 (1981-01-01), Mori

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