TONER SUPPLY August, 2006
6-64
1. Soft Toner Cartridge (STC)
Four toner cartridges are set in the toner hopper. They are inserted left to right
in this order Y, C, M and K.
2. Flexible Tubing
A flexible tube connects the toner cartridge to the toner pump.
3. Toner Pump
Consists of a rotor mounted on a drive shaft that creates a vacuum between
itself and the toner cartridge. The rotor is idle until it is engaged by the toner
pump clutch.
4. Toner Pump Clutch
The toner pump clutch is driven by the toner hopper motor. This clutch engages
the drive shaft and rotor of the toner pump when more toner is needed.
5. Sub Hopper
Receives the toner from the toner pump. The sub hopper functions as a
reserve tank for the development unit.
6. Toner Supply Clutch
The toner supply clutch is driven by the toner hopper motor. Engages the toner
supply auger in the sub hopper to send the toner from the sub hopper into the
development unit below.
7. Toner End Sensor
This sensor is on the sub hopper, and detects toner end. The number of pages
that can be printed is based on page count or pixel count, whichever limit is
exceeded first.
8. Toner Hopper Motor
The toner hopper motor is on the right side of the toner hopper. This motor
drives all the toner pump clutches and toner supply clutches in each toner
hopper (Y, M, C, K).
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