Pressure member configured to inhibit wrinkle formation and fixing device
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United States of America Patent
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Aug 16, 2016
Grant Date -
Jan 21, 2016
app pub date -
Jul 15, 2015
filing date -
Jul 17, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A pressure member includes a base, an elastic layer outside the base, and a surface layer on the elastic layer, the surface layer containing a fluorine-containing resin. The surface layer is fixed on the elastic layer in a state of being stretched in the longitudinal direction of the pressure member, the elastic layer has a porosity of 20% by volume or more and 60% by volume or less, and when the elastic modulus of the elastic layer in the thickness direction is defined as E (ND) and the elastic modulus of the elastic layer in the longitudinal direction of the pressure member is defined as E (MD), E (MD)/E (ND) is larger than 1.0.
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