Fuser Unit / Paper Exit Section; General Description; Operation - Toshiba e-STUDIO453 Service Manual

13. FUSER UNIT / PAPER EXIT SECTION

13.1 General Description

Toner is fused by applying heat and pressure on the transferred image on the paper which is transport-
ed to the fuser unit. The paper is then transported to the receiving tray, paper exiting options or ADU.
The fuser unit consists of the IH coil, fuser roller, pressure roller, separation fingers, cleaning roller,
thermistors, thermostat, exit roller, exit sensor, etc.
Thermostat
Thermistor

13.2 Operation

The fuser roller is pressed with the spring force from the pressure roller side, and is rotated by the
main motor drive. Then the paper transported to the fuser unit is hold between the fuser roller and
pressure roller and the toner is fused on the paper with heat and pressure. After this, the separation
fingers separate the paper from the fuser roller or pressure roller. Then the paper is transported to the
receiving tray, paper exiting options or ADU through the exit roller. In addition, the IH coil in the fuser
roller does not structurally rotate.
The thermistors control the temperature of fuser roller and detect temperature abnormalities. If the
temperature becomes excessively high, the thermostat is opened to stop the power supply to the IH
coil.
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Exit roller
IH coil
Fuser roller
Fig. 13-101
13 - 1
Exit sensor
Separation finger
Cleaning roller
Pressure roller
e-STUDIO350/352/353/450/452/453
FUSER UNIT / PAPER EXIT SECTION
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