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e-STUDIO3511/4511 TRANSFER UNIT 14 - 2 November 2003 © TOSHIBA TEC
14
14.3 Functions
(1) Transfer belt
The transfer belt is made by forming resin which has an electrical resistance with high precision.
The main motor drive rotates the transfer belt drive roller and that makes to rotate the transfer
belt as well.
(2) 1st transfer roller
When the 1st transfer bias from high-voltage power supply is applied, the toner is transferred
from photoconductive drum to the transfer belt. The spring presses to contact the transfer belt
with the photoconductive drum.
(3) Transfer belt cleaning blade
Removes the residual toner, paper dust or foreign objects on the transfer belt surface. Transfer
belt contact clutch performs contact/release movement.
(4) Transfer belt cleaner contact clutch
Performs contact/release movement between the transfer cleaning blade and transfer belt.
(5) Used toner auger
Transports the scraped residual toner and paper dust to the toner bag. The transfer belt cleaner
auger motor drives this auger.
(6) Drive roller-1
Rotates the transfer belt. This roller is driven by the transmitted drive from the main motor.
(7) Tension roller
Applies the tensile force to the transfer belt with its spring.
(8) Idling roller
Retains the contacting position of the transfer belt and the photoconductive drum.
(9) Drive roller-2
Contacts the transfer belt cleaning blade to the transfer belt easily. Also retains the contacting
position of the transfer belt and the photoconductive drum.
(10) Transfer belt home position sensor-1 and 2
Detects the home position of transfer belt. This reflection type sensor detects the reflection tape
inside of the transfer belt.
(11) 2nd transfer roller
When the 2nd transfer bias from high-voltage power supply is applied, the toner is transferred
from the transfer belt to the paper.