Fixing device, image forming apparatus and method for evaluating fixing device
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United States of America Patent
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Jun 11, 2013
Grant Date -
Jun 16, 2011
app pub date -
Dec 3, 2010
filing date -
Dec 10, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A fixing device includes a fixing roller and a pressure roller. The fixing roller and the pressure roller each have an elastic layer formed between a core bar and a release layer, which release layer serves as a surface of the fixing roller and the pressure roller. The pressure roller has a lower Asker-C hardness than that of the fixing roller, and has a greater micro rubber hardness than that of the fixing roller. This prevents the surface of the pressure roller from deteriorating in a short period of time.
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