Patent ID: 7689136

Claim:
An image forming apparatus, comprising: a rotatable photosensitive member; image forming means including charging means for charging said photosensitive member, exposing means for exposing said photosensitive member to form an electrostatic image thereon, developing means for developing the electrostatic image formed on said photosensitive member by said exposing means, with toner, and transferring means for transferring a toner image developed by said developing means onto a recording material; fixing means for fixing the toner image transferred by said transferring means onto the recording material; a temperature sensor for detecting an environment temperature of the image forming apparatus; and control means for, when said fixing means having a temperature lower than a predetermined temperature is heated up to an image formation allowable temperature, controlling said image forming means to (i) execute a first adjustment process for adjusting an image forming condition of said image forming means in a period of heating said fixing means up to the image formation allowable temperature in a case said temperature sensor detects a first temperature, and (ii) execute a second adjustment process for which a required time period is shorter than that for the first adjustment process in a period of heating said fixing means up to the image formation allowable temperature in a case in which said temperature sensor detects a second temperature higher than the first temperature.