Oki Data CONFIDENTIAL
42930511TH Rev. 2 30 /
OPC drum
Development roller
Sponge roller
Development blade
Electrification roller
(4) Development
The negatively charged toner comes in contact with the OPC drum to fuse the electrostatic
latent image by electrostatic force, to create a significant image on the surface of the OPC
drum.
1 The sponge roller precipitates toner on the development roller. The toner is then
negatively electrified.
2 The development blade removes excess toner from the development roller, then a
thin toner layer is created on the development roller.
3 The toner is sucked into the electrostatic latent image where the OPC drum and
development roller comes in contact.
Transfer roller
Paper
Conveyance belt
OPC drum
Power
supply
unit
(5) Transfer
The transfer roller is made of a conductive sponge. Paper is pressed against the OPC
drum surface, then the paper and OPC drum surface is adhered.
Paper is pressed against the surface of the OPC drum, then conveyed by the transfer roller
from behind. The toner and positive electrical load (that is reverse with the toner) is applied,
then the toner image is transferred to the paper.
When the power source applies powerful positive power on the transfer roller, the positive
electrical load induced by the transfer roller is transferred to the paper surface at the
contact point between the transfer roller and paper. The negative electrical load toner is
then sucked from the OPC drum surface on to the paper surface.
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