High speed wire printing device

Details High speed wire printing device High speed wire printing device

1977-12-13

1979-10-02

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

400323, B41J 312

Patent

active

041696832

ABSTRACT:
A high-speed wire printing device wherein the wires are slidably mounted on a carriage movable in front of a recording medium and individually actuated by controlling electromagnets to print alphanumeric characters and graphic symbols on the medium in accordance with a dot matrix formed of lines and columns. The printing extremities of the wires are aligned on two side-by-side columns. At each actuation cycle of the electromagnets, the carriage is shifted at a constant speed in front of the medium by a distance that is substantially equal to twice the distance between two columns of the matrix. An electronic circuit for the actuation of the electromagnets actuates both selectively and alternately the wires arranged in two side-by-side columns.

REFERENCES:
patent: 3764994 (1973-10-01), Brooks et al.
patent: 4079824 (1978-03-01), Ku

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