Ribbon feed mechanism providing a constant relative velocity between ribbon and print head
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United States of America Patent
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-
Dec 30, 1986
Grant Date -
N/A
app pub date -
Feb 22, 1985
filing date -
Feb 22, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A ribbon feed mechanism for a bi-directional printer that produces a constant relative ribbon to print-head velocity. The invention produces the constant relative velocity by coupling the ribbon to the print-head through a reciprocating shuttle, which moves in an opposite direction to and at one-half the speed of the print-head. As the shuttle reciprocates it engages the ribbon such that a constant length is maintained between the ribbon supply and the print-head and between the print-head and the ribbon take-up. The ribbon is taken up at a constant speed. By this method, the relative ribbon to print-head speed is fixed at the ribbon take-up speed.
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Cited Art Landscape
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