Printer with impact dot head

Details Printer with impact dot head Printer with impact dot head

1992-08-10

1993-05-25

Burr, Edgar S.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, B41J 2235

Patent

active

052134237

ABSTRACT:
An impact dot head for a printer includes a frame and a plurality of printing wires movably supported on the frame in a predetermined array. Each printing wire is bent by a different predetermined amount to be guided when moved. A plurality of armatures are respectively coupled to a respective one of the printing wires for moving the printing wires. A plurality of magnetic cores are respectively associated with each one of the armatures for selectively driving the armatures. Each of the armatures is driven by its respective magnetic core between a rest position and a printing position. A retaining member is supported on the frame and has a plurality of openings each of which is respectfully associated with one of the armatures. A plurality of coil springs each of which is supported in a respective one of the openings normally biases the armatures in the rest position. Each of the openings has a depth corresponding to the amount of bending of the printing wire associated therewith.

REFERENCES:
patent: 4613246 (1986-09-01), Sugiura et al.
patent: 4723854 (1988-02-01), Sakaida et al.
patent: 4986676 (1991-01-01), Kimura et al.
patent: 4993854 (1991-02-01), Sato
patent: 4995743 (1991-02-01), Bernardis et al.

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