Print head for dot matrix printers

Details Print head for dot matrix printers Print head for dot matrix printers

1993-05-07

1993-11-16

Burr, Edgar S.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, B41J 312

Patent

active

052617530

ABSTRACT:
A print head for use in dot matrix printers for producing characters and symbols formed from dots. The print head is composed of a plurality of stylus actuator assemblies arranged one after the other in two interlocking rows and with all the styli level with each other on a head frame. Each of the stylus actuator assemblies comprises an electromagnetic actuator fixed to the head frame and energized by an impact driving current, a yoke base fixed to the stylus actuator assembly, and an armature pivotally supported on the yoke base and at one end thereof having a stylus for printing and at the other end thereof having a plunger attracted by the electromagnetic actuator, whereby the stylus is impacted onto a recording paper. All armatures of the stylus actuator assemblies have bent portions provided on the same side thereof with respect to the direction in which the print head traverses.

REFERENCES:
patent: 4394093 (1983-07-01), Asano et al.
patent: 4772141 (1988-09-01), Sanders et al.
patent: 4828409 (1989-05-01), Sparshott et al.

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