Fixing device including heating roller and pressure roller
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United States of America Patent
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Jan 29, 2008
Grant Date -
Jan 5, 2006
app pub date -
Jul 1, 2005
filing date -
Jul 2, 2004
priority date (Note) -
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Abstract
A fixing device wherein supposing that the total load given to a heating roller and a pressure roller is W (kgf) and the area of the pressure contact portion of the heating roller with respect to the pressure roller (nip area) is S (cm.sup.2), the nip pressure (=W/S) is 2.7 kgf/cm.sup.2 or more and the length of the pressure contact portion in the direction parallel to the direction of conveyance of a recording material is defined to be 14 mm or more.
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