Compliant pressure roller with uniform nip pressure
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United States of America Patent
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Aug 21, 2007
Issued Date -
N/A
app pub date -
Mar 5, 2004
filing date -
Mar 5, 2004
priority date (Note) -
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Abstract
A compliant pressure roller (10) for creating uniform pressure at a nip (42) has a stationary inner core (12). A plurality of shoes (14) is pivotally mounted to the stationary inner core. Non-magnetic dividers (16) create a plurality of annular chambers (18) and one shoe occupies one of the chambers. A magneto-rheological fluid fills each of the chambers and a plurality of magnetic field generators (13) changes a magnetic field in each of the chambers. A thin, rotatable shell (24) surrounds the plurality of chambers, shoes, and stationary inner core.
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