Printer apparatus using electromagnet
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United States of America Patent
Stats
-
Jun 7, 1983
Grant Date -
N/A
app pub date -
Nov 6, 1980
filing date -
Nov 6, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A printer of the needle or hammer impact type prints by release of spring-stored energy, driving the needle or hammer against a platen or character ring. A rotating cam restores the printing member to a locked standby condition after impact, and an electromagnet attracts a moveable core to allow release of the printing member at selected times for printing. The gap between the moveable and fixed cores of the electromagnet is periodically closed mechanically and electrical energization of the electromagnet only maintains the attracted state of the fixed and moveable cores.
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