Matrix printing device

Details Matrix printing device Matrix printing device

1984-10-15

1986-12-16

Pearson, Charles

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, B41J 304

Patent

active

046293434

ABSTRACT:
A matrix printing device includes a housing body which can effect a translational movement relative to a printing surface in use, a plurality of wires slidable in the housing body and each having one end for acting on the print surface as a result of a thrust exerted on the other end, and a plurality of oscillating operating members each of which can exert a thrust on a respective wire. Electromagnetic excitation circuits selectively oscillate each of the operating members from a rest position to a position of thrusting the respective wire. The operating members are fixed to a single resilient support element. The position of fixing of each operating member to the support element and the resilient properties of the support element determine, respectively, the path of oscillation of the operating member and the degree of resilient force which returns the member to the rest position.

REFERENCES:
patent: 4225250 (1980-09-01), Wagner et al.
patent: 4244658 (1981-01-01), Mori
patent: 4377348 (1983-03-01), Isobe et al.
patent: 4407591 (1983-10-01), Adamoli et al.
patent: 4423969 (1984-01-01), Kobryn
patent: 4453840 (1984-06-01), Hodne
patent: 4511269 (1985-04-01), Takahashi et al.
patent: 4539905 (1985-09-01), Zenner

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