Second Btr & Fuser - Epson AcuLaser C1100 Service Manual

EPSON AcuLaser C1100
2.5.4 Second BTR & FUSER
MAIN FUNCTIONS
2ND BTR ASSY
The Second BTR (2ND BTR ASSY) is a conductive roll. It contacts the back of
paper (back of the side to be printed on) and a voltage is applied from the HVPS.
MOT ASSY MICRO
MOT ASSY MICRO makes the BTR contact the paper during 2nd transfer
process, and releases BTR from the paper after the 2nd transfer. When the Motor
starts to operate, the shaft rotates to rotate the cam attached to the shaft. The lever
attached with the BTR is pressed by the eccentric cam, and the BTR contacts the
paper to transfer the toner image to the paper. After completion of the transfer, the
lever returns to its original position by spring force when the Motor starts to
operate again. This causes the BTR to return to the non-contact position.
SENSOR 2BTR RETRACT
The position of BTR is detected by the SENSOR 2BTR RETRACT. The shaft
with the cam for contacting/releasing BTR is provided with a Sensor actuator. The
non-contact state of BTR is detected by the actuator shielding the Sensor, and the
contact state of the BTR is detected when the Sensor is subjected to light.
FUSER ASSY
The FUSER ASSY fixes the completed toner image transferred on the paper by
heat and pressure. It also functions to feed paper before and after fixing, and feed
paper to the eject tray or Duplex by switching the gate inside the Fuser.
The Fuser consists of the following parts:
Heat Roll
Belt
Heater Lamp
Exit Roll
Thermostat
Temp. Sensor
Exit Sensor
OPERATING PRINCIPLES
Figure 2-49. Retracting operation of Second BTR
Temp. Sensor
Figure 2-50. Main Components of FUSER
Xerographic
SENSOR 2BTR RETRACT
2ND BTR ASSY
MOT ASSY MICRO
Leg_Sec06_070FB
FUSER ASSY Exit Roll
Exit Sensor
Temp. Sensor
Thermostat
Belt
Heat Roll
Heater Lamp
Leg_Sec06_060EA
Revision B
106