Character spacing circuit for controlling print hammer firing
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United States of America Patent
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-
May 12, 1987
Issued Date -
N/A
app pub date -
Jul 18, 1986
filing date -
Oct 27, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A circuit for controlling the firing of a print hammer so as to maintain constant intercharacter spacing during printing. The speed of a motor which moves a document in printing relationship with a printer is used to ascertain the instantaneous velocity of the document just prior to the firing of a hammer associated with the printer. An up/down counter is used in determining the delay, if any, in firing the hammer to compensate for instantaneous velocities which are slower than the fastest velocity of document travel expected.
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