Matrix print head assembly

Details Matrix print head assembly Matrix print head assembly

1978-03-17

1980-10-28

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, B41J 312

Patent

active

042304121

ABSTRACT:
A wire matrix print head assembly having a plurality of circumferentially spaced armature members in which each armature member is operatively associated with a pair of radially spaced magnetic pole members and a coil associated therewith, each armature member being mounted between the pole members and the wire printing members with the end surfaces of the pole members facing the direction of movement of the armatures during printing movement from a non-print position to a print position, the inner pole member end surface providing a pivotal support surface for the armature member and also providing a locating surface engageable with a portion of the armature housing opposite thereto, a resilient biasing member mounted on the armature housing portion and engaging the armature member opposite the pivotal support surface, a resilient support and locating member engaging the radially innermost end portion of the armature opposite the associated wire printing member, and an axially adjustable sleeve means for supporting and locating the resilient support and locating member.

REFERENCES:
patent: 3333667 (1967-08-01), Nordin
patent: 3929214 (1975-12-01), Hebert
patent: 4009772 (1977-03-01), Glaser
patent: 4060161 (1977-11-01), Nelson et al.

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