Patent ID: 9104144
Filing Date: 2015-08-11
Classification: G03G

Abstract:
1. A fixing device comprising: a fixing rotary body that heats toner while rotating and fixes the toner on a recording medium; a pressurizing rotary body that sandwiches and pressurizes the toner and the recording medium by the fixing rotary body; and a supporting part that supports the fixing rotary body from the inside so that a peak pressure on an outlet side of the recording medium becomes less than or equal to a peak pressure on an inlet side, in a contact part where the fixing rotary body and the pressurizing rotary body come into contact with each other, wherein the supporting part supports the fixing rotary body from the inside so that an integration value of pressures on the outlet side of the recording medium becomes less than or equal to an integration value of pressures on the inlet side, in the contact part, wherein the toner has a particle diameter of 4.5 [μm] or less and a softening point of 100 [° C.] or higher and 140 [° C.] or lower, wherein the smoothness of the recording medium showing a surface state is 740 [sec] or more and 2000 [sec] or less, and wherein the peak pressure on the inlet side is 392 [kPa] or higher and 589 [kPa] or lower and the peak pressure on the outlet side is 294 [kPa] or higher and 392 [kPa] or lower.