Printer with feed fault detection
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United States of America Patent
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-
Aug 26, 1997
Issued Date -
N/A
app pub date -
May 25, 1995
filing date -
Jan 22, 1993
priority date (Note) -
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status (Latency Note)
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Abstract
A thermal printer utilizes a donor web bearing a transfer ink to create enhanced printed images on a strip of sheet material with half-tones, color and other attractive features. The donor web is mounted on supply and take-up spools within a cassette that is removable from the printer in order to change the color or other printing characteristics of the web for various printing operations. A drag brake mounted in the printer connects with the supply spool through a disengageable coupling to maintain tension on the donor web during printing and to allow the web and cassette to be removed from the printer. A feed detection sensor in the form of an optical encoder is also contained within the printer and coupled to the supply spool through the same disengageable coupling utilized by the drag brake to detect feed faults.
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