Armature with angled bore for print needle fastening

Details Armature with angled bore for print needle fastening Armature with angled bore for print needle fastening

1991-08-02

1992-12-29

Wiecking, David A.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, B41J 226

Patent

active

051746646

ABSTRACT:
A matrix printhead having a plurality of electromagnetic drives arranged in a cluster including a plurality of drive elements further having a plurality of reciprocating print needles, wires or styli, includes additionally a fastening structure for each of these needles, wires or styli to the drive elements in that the drive element has a width dimension which is larger than a diameter or a representative diameter dimension for the print needle, wire or stylus so as to accomodate an opening in the fastening area having said width and having a cross sectional contour which matches at least in parts the contour of the periphery of the needle to be inserted, there may be an extra slot and the needle as inserted is brazed or soldered to a opening. The opening is at an angle of between 40 and 60 degrees to the plane of the armature.

REFERENCES:
patent: 4136978 (1979-01-01), Bellinger
patent: 4248540 (1981-02-01), Bellinger
patent: 4394093 (1983-07-01), Asano et al.
patent: 4403875 (1983-09-01), Asano
patent: 4457635 (1984-07-01), Takezawa et al.
patent: 4544288 (1985-10-01), Suzuki et al.
patent: 4552064 (1985-11-01), Sanders
patent: 4555192 (1985-11-01), Ochiai
patent: 4569604 (1986-02-01), Adachi
patent: 4572681 (1986-02-01), Miyazawa
patent: 4974975 (1990-12-01), Andou et al.

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