Wire dot printer with improved wire dot head

Details Wire dot printer with improved wire dot head Wire dot printer with improved wire dot head

1986-01-27

1987-10-06

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, 400686, 400719, 335271, 335277, B41J 312

Patent

active

046979395

ABSTRACT:
A wire dot printer has a wire dot head comprising a plurality of electromagnets for attracting each armature to thereby project each wire to a printing position, a first cover provided with a guide for guiding the wires to the printing position, holding means for holding the electromagnets, the holding means being formed of a material of high heat radiation efficiency, and a second cover connected to the holding means with high heat conducting efficiency and covering the electromagnets and the armatures, the second cover being provided with radiation fins at a plurality of locations thereon.

REFERENCES:
patent: 3770092 (1973-11-01), Grim
patent: 3897865 (1975-08-01), Darwin
patent: 4009772 (1977-03-01), Glaser et al.
patent: 4140406 (1979-02-01), Wolf et al.
patent: 4260270 (1981-04-01), Cavallari
patent: 4279525 (1981-07-01), Johnston
patent: 4375338 (1983-03-01), Mitsuishi
patent: 4411538 (1983-10-01), Asano
patent: 4441828 (1984-04-01), Ochiai et al.
The Condensed Chemical Dictionary, Sixth Edition, Reinhold Publishing Corporation, New York, 1961, p. 919.

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