Operation - Toshiba e-STUDIO281c Service Manual

16.4 Operation

The fuser belt is located between the fuser roller and pressure roller. The fuser roller is pressed with the
spring force from the pressure roller side, and it is rotated by the transport motor (M9) drive. The fuser
belt also rotates simultaneously. Then the paper transported to the fuser unit is hold between the fuser
belt and pressure roller and the toner is fused on the paper with heat and pressure. After this, the sepa-
ration fingers, separation roller and separation plate separate the paper from the fuser belt. Then the
paper is transported to the inner tray, paper exiting options or ADU through the exit roller. In addition,
the IH coil (IH-COIL) in the fuser roller does not structurally rotate.
The main and front edge thermistor (THM2, 1) control the temperature of fuser roller and sub thermistor
(THM3) detect the temperature abnormalities of fuser roller. If the temperature becomes excessively
high, the fuser thermostat is opened to stop the power supply to the IH coil (IH-COIL).
When transporting OHP film or thick paper in color modes, the transport speed is lowered to the range
from 1/2 to 1/3 in order to improve fusing efficiency. The exit motor (M7) which drives the exit roller is
decelerated at the same time.
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June 2005 © TOSHIBA TEC e-STUDIO281c/351c/451c FUSER UNIT / PAPER EXIT SECTION
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