Toshiba e-STUDIO203S Service Manual page 36

Step-3: Developing (DC bias)
A bias potential is applied to the MG roller in the two component
magnetic brush developing method, and the toner is charged nega-
tive through friction with the carrier.
Non-image area of the drum surface charged with negative poten-
tial repel the toner, whereas the laser exposed portions where no
negative charges exist, attract the toner. As a result, a visible image
appears on the drum surface.
:Carrier (Magnetized particle)
:Toner (Charge negative by friction)
(N) (S) Permanent magnet
(provided in three locations)
N
N
MG roller
DC
400V 8V
Toner is attracted over the shadowed area because of the develop-
ing bias.
S
e-STUDIO203S/203SD
Step-4: Transfer
The visible image on the drum surface is transferred onto the print
paper by applying a positive charge from the transfer corona to the
backside of the print paper.
Step-5: Separation
Since the print paper is charged positively by the transfer corona, it
is discharged by the separation corona. The separation corona is
applied negative charge.
Step-6: Cleaning
Toner remaining on the drum is removed and collected by the
cleaning blade. It is transported to the waste toner collecting section
in the cleaning unit by the waste toner transport roller.
COPY PROCESS 6 - 3
08/09
2.7kV
About DC 5.2kV