Double print head

Details Double print head Double print head

1988-12-22

1991-01-29

Burr, Edgar S.

Typewriting machines

Typing by other than type-face or type-die

Character formation by impact

101 9305, B41J 2505

Patent

active

049882228

ABSTRACT:
A dot matrix double print head including a front actuator and a rear actuator is disclosed. Each actuators has a print wire unit in which a plurality of print wires are slidably mounted, a plurality of electromagnets, and a plurality of armatures corresponding to the number of electromagnets. The length of the armature of the rear actuator is smaller than that of the front actuator, and thereby the moments of inertia of each of the armatures and print wires of both the actuators approach each other.

REFERENCES:
patent: 4225250 (1980-09-01), Wagner
patent: 4279521 (1981-07-01), Kightlinger
patent: 4669898 (1987-06-01), Yeh

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