Universal ribbon cartridge for high-speed printers
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United States of America Patent
Stats
-
Jan 29, 1991
Grant Date -
N/A
app pub date -
Oct 9, 1986
filing date -
Oct 9, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A ribbon movement controlling cartridge includes a smudge guard/ribbon guide which contains exposed ribbon in a fixed stationary position during cartridge transportation and storage. When the guide is engaged with a printhead, it releases ribbon passage therethrough and acts as a smudge guard/ribbon guide during normal cartridge usage. A Mobius loop forming structure (along a first path for fabric ribbons) includes a central aperture therethrough so as to alternately permit direct non-inverting ribbon passage through the same structure along a second path intersecting the first path, for carbon film-type ribbons. A limited usage metering and self-stopping mechanism insures against over-extended usage of the cartridge. A unique key locking tab arrangement permits a proper cartridge to be positively engaged with a printer while also permitting easy disengagement for cartridge removal and replacement.
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