Operation - Toshiba e-STUDIO2006 Service Manual

3.14.4

Operation

The fuser roller is pressed by the pressure roller with the spring force. The fuser roller is rotated by the
main motor drive, and the pressure roller is rotated by the rotation of the fuser roller. In addition, the
heater lamps in the fuser roller do not structurally rotate.
2 heater lamps having different functions are installed; one applies heat to the center part of the fuser
roller and the other applies heat to both ends of the roller. In this equipment, the surface temperature of
the fuser roller at any paper size can be maintained by controlling the turning ON/OFF of the 2 heater
lamps. The thermistors control the temperature of the fuser roller and detect temperature abnormalities.
If the temperature becomes excessively high, the thermostat is opened to stop the power supply to the
heater lamps.
Then the paper transported to the fuser unit is held between the fuser roller and pressure roller, and
toner is fused on the paper with heat and pressure. After this, the separation fingers separate the paper
from the fuser roller. Then the paper is transported to the inner tray through the exit roller. The paper
transport status of the fuser/exit unit is detected by the exit sensor.
When the power is turned ON, the warming up of the fuser unit is started: the heater lamps are turned
ON. If the temperature of the fuser roller does not reach or exceeds a specified temperature within a
specified period of time, it is judged that the heater is abnormal. When the specified temperature has
been reached normally, the equipment goes into the ready state.
When printing is not performed within a specified period of time during ready, the equipment enters the
Auto Power Save Mode and turns the heater lamp. OFF or lowers the control temperature to save
power consumption. And if printing is not performed within another specified period of time after the
equipment has entered the Auto Power Save Mode, the equipment then enters the Auto Shut Off mode
to turn OFF the heater lamp.
e-STUDIO2006/2306/2506/2007/2307/2507/2303A/2303AM/2803AM/2309A/2809A © 2013-2017 TOSHIBA TEC CORPORATION All rights reserved
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