Sheet thickness sensing technique and recording head automatic adjusting technique of ink jet recording apparatus using same
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United States of America Patent
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Sep 15, 1998
Grant Date -
N/A
app pub date -
Jun 26, 1997
filing date -
Jun 26, 1996
priority date (Note) -
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Abstract
A sheet thickness sensing apparatus of an image recording apparatus includes a thickness sensing circuit for generating a sheet thickness value corresponding to a reflective optical quantity sensed by a reflective optical sensor which is separately installed opposite to a reflective surface moving correspondingly according to the thickness of a fed sheet. A head driving enable time or a head gap is adjusted correspondingly to the thickness of the sheet.
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