Dot matrix printer with improved wire guide

Details Dot matrix printer with improved wire guide Dot matrix printer with improved wire guide

1991-06-14

1993-08-24

Wiecking, David A.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

B41J 2265

Patent

active

052383130

ABSTRACT:
An impact dot head of a printer provided with a plurality of printing wires. The top end guide and/or the nose formed with protrusions at the sides thereof and with holes for slidably guiding the tips of the printing wires. The top end guide is inserted into a hole and grooves of a nose. The protrusions are then deformed to interlock within the apertures in one of the nose and top end guide, so that the respective end surfaces of the top end guide and the nose surface confronting the printing medium are in a predetermined relation, preferably essentially flush. Further, a method is provided for mass producing the impact dot head at a relatively low cost by using heat to deform the projections made of a thermoplastic resin.

REFERENCES:
patent: 3835975 (1974-09-01), Howard
patent: 4185929 (1980-01-01), Hebert
patent: 4501506 (1985-02-01), Weeks et al.
patent: 4662764 (1987-05-01), Cavallari
patent: 5048985 (1991-09-01), Mitsuishi

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