Wire matrix print head assembly

Details Wire matrix print head assembly Wire matrix print head assembly

1979-09-24

1984-10-23

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, B41J 312

Patent

active

044785283

ABSTRACT:
A wire matrix print head assembly in which the print wires are operably supported in one-piece bearing and guide passage block member in an elongated wire housing with wire actuating armature members arranged in a circular array between radially innermost and outermost poles of electromagnetic armature actuating devices and an armature retaining cover member centrally adjustably connected to the wire housing and having armature confining slots holding the armatures in pivotally displaceable operable association with the poles, the armatures being pivotally supported on the radially outermost edge surfaces of the outermost poles with or without resilient biasing devices continuously holding the armatures in engagement with the pole pivot surfaces without applying a moment of force and peripheral portions of the cover member being mounted in rigid abutting engagement with end surfaces of the outermost poles.

REFERENCES:
patent: 4117435 (1978-09-01), Hishida et al.
patent: 4222674 (1980-09-01), Mori et al.

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