e-STUDIO556/656/756/856(Ver03) © 2012 TOSHIBA TEC CORPORATION All rights reserved
OUTLINE OF THE MACHINE
3 - 82
3.15 Fuser Unit
3.15.1 Outline
The toner is fused on the paper separated from the photoconductive drum by having heat and pressure
applied to it. The paper is then discharged through the paper exit section. The fuser unit consists of the
IH coil (IH-COIL), fuser roller, pressure roller, separation fingers, cleaning web, thermistors (THM1, 2, 3
and 4), thermostat (THMO1 and 2), fuser exit rollers, fuser transport sensor (S9), etc.
Fig. 3-49
3.15.2 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
temperature becomes abnormally high, which is detected by thermostats (THMO1 and 2), the power
supply to the IH coil (IH-COIL) is cut off.
Cleaning web
Web motor
Fuser exit
roller
Separation
finger
Pressure roller
Pressure roller
thermistor
IH coil
Fuser roller
thermostat
Fuser roller
thermistor
Web detection
sensor
Fuser transport
sensor
Web pushing roller
Fuser roller
Fuser entrance
guide
Fuser unit
Jam release knob
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