Kyocera FS-1010 service manual Transfer

(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.

A

Transfer bias

B

High voltage board

YC1-A5

YC1-A5

YC-TYC1-A7 YC1-A8

YC1-A8

Bias

board

RTHVDR

THVDR

HVISEL

PSEL1

PSEL2

Engine board

YC11-14

YC12-2

YC11-12

YC11-9

YC11-7

Figure 4-1-9 Transfer

The nominal transfer bias is set to approximately -1.8 kV (limit) with the -6 ∝A 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 ∝A for thicker paper. On the other hand, the bias current is reduced to -1.8 kV/-6 ∝A for thin paper.

FS-1010

4-11