Toshiba e-STUDIO170F Service Manual page 207

[ 4 ] Image Transfer Section
Image transfer is the process of transferring the toner image created on the drum in the developing pro-
cess to paper.
Roller image transfer is used instead of corona image transfer as the image transfer method. In roller
image transfer, there is little generation of ozone due to corona discharge. Also, there is no blur of toner
because the paper is always pressed by the drum and the image transfer roller.
When cleaning the image transfer roller and before printing, the reverse bias is applied.
The image transfer roller is cleaned when the power is turned ON, the print is started, the print is fin-
ished and the equipment is rebooted after the jam release. The residual potential on the paper is dis-
charged by the discharge needle.
Drum
January 2005 © TOSHIBA TEC
Drum
Image transfer roller
Paper
Discharge needle
Image transfer roller
Reverse bias
Fig.5-12
5 - 15
Paper
Image transfer bias
e-STUDIO170F Mechanical Description
5