Actuator for dot matrix printhead
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United States of America Patent
Stats
-
Jun 23, 1987
Issued Date -
N/A
app pub date -
Dec 9, 1985
filing date -
Aug 26, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved dot matrix actuator is provided which includes a magnetic circuit formed of a yoke assembly and a pivotal armature. The armature is pivotally supported with respect to the yoke by means of a flexure assembly which eliminates the need for a true pivot between the two elements. The elements are shaped so as to maintain a constant small air gap therebetween so as to maximize the magnetic efficiency of the device while eliminating wear. The device is operated just below saturation of the magnetic circuit in order to maximize efficiency. In addition, the actuator includes several features for maximizing its speed and operational efficiency.
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