Agitation System - Ricoh MP C3004 Field Service Manual

The dry two-component magnetic brush development system gives a suitable electrostatic charge to the
toner using magnetic particles called carriers which form a magnetic brush due to their magnetism, and
cause toner to adhere electrostatically to the drum surface.

Agitation system

For MP C4504/C5504/C6004, all colors of PCDU and for MP C3004/C3504 K of PCDU
This device uses an OD (One-way circulation of Developer) system.
The developer supply/recovery route is divided to make the toner density uniform in the
longitudinal direction of the unit, and stabilize the solid image.
The amount of developer adhering to the development roller is controlled by a doctor blade, and
supplies toner to the surface of the OPC drum.
No. Description
1 Developer supply coil
2 Lower case
3 Developer collection coil
4 Upper case
5 Inner pressure adjustment filter
PCDU (Photo Conductor and Development Unit)
No. Description
6 Separation plate
7 Development roller
8 OPC drum
9 Doctor blade
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