| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an image forming apparatus configured to prevent fixing failure or sheet deformation even if a result of detecting a surface temperature of a pressure roller is omitted.SOLUTION: An image forming apparatus for fixing an image formed on a recording medium with developer, by heat and pressure includes: a fixing member supported in a rotatable manner to heat the developer; a pressure member for pressing the recording medium held with the fixing member; a temperature detection unit which detects a temperature of the fixing member; a temperature control unit which controls the temperature of the fixing member; a rotation control unit which controls rotation of the fixing member; an environment value detection unit which detects an atmospheric temperature; a timer unit which measures the time required until the end of warm-up of the fixing member; and a rotation time setting unit which sets rotation time of the fixing member. When the atmospheric temperature is lower than a predetermined temperature, the rotation time setting unit changes the rotation time after the rotation control unit reaches a warm-up temperature, on the basis of a time measured by the timer unit.</p> |
