Fixing device equipped with separating means having a sheet separation function and fixing temperature detection function.

摘要

A fixing device includes a fixing roller (11) having a heater (11a), a press roller (12) for pinching a sheet (P) with the fixing roller, and a separating member (22) for separating the sheet from the fixing roller after the sheet has passed between the pinching area between the two rollers. The separating member (22) has a leaf spring contacting the fixing roller to separate the sheet therefrom, and a detector (23), provided on the contact portion of the spring, for detecting the surface temperature of the fixing roller and for controlling the heater to set the surface temperature at a predetermined value.