Operation - Toshiba e-STUDIO520 Service Manual

14.2 Operation

At the fuser unit, the toner is fused on the paper which has been separated and transported from the
photoconductive drum by having heat and pressure applied to it. The pressure and fuser rollers are
rotated by the driving of the fuser motor (M3). The fuser roller has an IH coil (IH-COIL) inside, which
does not rotate itself. The fuser and pressure rollers are always pressured by a spring force. After being
fused, the paper is separated smoothly from the fuser roller by the separation fingers.
The thermistors (THM1, 2 and 3) detect the fuser roller temperature to control it, and when the temper-
ature becomes abnormally high, which is detected by thermostats (THMO1 and 2), the power supply to
the IH coil (IH-COIL) is cut off.
e-STUDIO520/600/720/850 FUSER UNIT March 2005 © TOSHIBA TEC
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