Fixing device and image forming appatarus including the fixing device

A fixing device comprising:

• a heated rotational body having a pattern for position recognition on a surface;
• a heating unit heating the heated rotational body;
• a pressuring rotational body coming into pressure contact with the heated rotational body, a fixing nip area where an unfixed toner image on a recording medium is melted and fixed being formed between the pressing rotational body and the heated rotational body;
• a pressing mechanism configured to press the pressing rotational body on the heated rotational body;
• a drive unit configured to drive the pressing rotational body to be rotated;
• a position recognition part configured to recognize a specific point contained in the pattern at a prescribed period;
• a rotational state determination part configured to determine a variation in a rotational speed of the heated rotational body and a meandering state of the heated rotational body based on a position of the specific point recognized at the prescribed period;
• a drive control part configured to control the drive unit based on the variation in the rotational speed of the heated rotational body;
• and
• a pressing control part configured to control the pressing mechanism based on the meandering state of the heated rotational body such that pressing forces applied to end portions in a rotational axial direction of the pressing rotational body are relatively changed.