Wire matrix print head

Details Wire matrix print head Wire matrix print head

1979-11-02

1981-07-21

Sewell, Paul T.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, B41J 312

Patent

active

042795214

ABSTRACT:
A wire matrix print head has a first group of wires activated by a first group of electromagnetic means disposed on the circumference of a circle and substantially equally angularly spaced from each other. A second group of print wires is activated by a second group of electromagnetic means disposed on the circumference of a circle with each of the electromagnetic means of the second group having its longitudinal axis out of alignment with the longitudinal axis of each of the electromagnetic means of the first group. The print head includes guide means to transform the two groups of wires, which have their ends remote from the ends causing printing disposed on the circumferences of two circles, into a row and column matrix for causing printing.

REFERENCES:
patent: 3729079 (1973-04-01), Zenner et al.
patent: 3893220 (1975-07-01), Bittner
patent: 3900094 (1975-08-01), Larsen et al.
patent: 3904011 (1975-09-01), Matschke
patent: 4060161 (1977-11-01), Nelson et al.
patent: 4101017 (1978-07-01), Englund et al.
patent: 4218150 (1980-08-01), Swaim

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