Ricoh Beluga-C1 Training page 180

Toner Supply and Mixing
Toner
agitator
Paddle
roller
Toner agitator: Transfers toner out of the cartridge
Paddle roller: Mixes the toner with developer backspill from the
separator
Slide 180
This slide shows how toner gets to the development unit from the toner cartridge,
and how it mixes with the developer in the development unit.
The toner goes directly to the development unit from the cartridge. There is no
hopper between the cartridge and the development unit. But the cover where the
cartridge is installed is known as the 'hopper cover', and the area where the
cartridge stays is known as the 'hopper'.
The mixing is the same as in other models. Details are as follows:
The toner agitator moves toner from the toner cartridge to the development
unit.
The paddle roller gets developer in its paddles and moves it to the
development roller. Magnets in the development roller pull the developer to
the sleeve of the development roller.
The sleeve turns, and this moves developer to the drum.
The doctor blade adjusts the layer of developer to the correct thickness and
makes a backspill to the cross-mixing mechanism.
The movement of the paddle roller and development roller increases the air
pressure in the unit. A hole with a filter on top of the unit releases air
pressure to decrease toner scattering.
The quantity of toner that is supplied is controlled by the toner supply clutch
on/off timing, which in turn is controlled by the ID sensor.
Toner supply control will be explained in this section of the course.
Hole and
filter
180
Beluga-C1/C1.5 Training
Doctor
blade
Development
roller