Transfer - Kyocera Mita Ecosys FS-1010 Service Manual

(4) Transfer

The image developed by toner on the drum A is transferred onto the paper because of the electrical
attraction between the toner itself and the transfer roller B. The transfer roller is negatively biased
so that the positively charged toner is attracted onto the paper while it is pinched by the drum and
the transfer roller.
The nominal transfer bias is set to approximately -1.8 kV (limit) with the -6 µA current. Since the
ideal potential of the transfer bias depends on the thickness of paper, the bias is raised to approximately
-2.5 kV/-6 µA for thicker paper. On the other hand, the bias current is reduced to -1.8 kV/-6 µA for
thin paper.
Transfer bias
High voltage board
YC1-A5
YC1-A5
YC1-A7
YC-T
YC1-A8
YC1-A8
Figure 4-1-9 Transfer
4-11
A
B
Bias
board
RTHVDR
YC11-14
THVDR
YC12-2
HVISEL
YC11-12
PSEL1
YC11-9
PSEL2
YC11-7
Engine board
FS-1010