Free flight hammer for impact printer
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United States of America Patent
Stats
-
Aug 30, 1983
Issued Date -
N/A
app pub date -
Jan 18, 1982
filing date -
Sep 14, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The hammer of a serial impact printer comprises a solenoid including a stationary magnetic structure with an opening extending therethrough and a movable magnetic structure adapted to move through the opening. The movable magnetic structure is accelerated by the flux path from the stationary magnetic structure and through the movable magnetic structure as the gap between the movable and stationary magnetic structures closes such that the movable magnetic structure is in substantially unobstructed free flight before the impact area coupled to the movable magnetic structure strikes the character element. The character element in turn strikes a print receiving medium supported by a platen, typically through an ink-bearing ribbon.
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Cited Art Landscape
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