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6 January 1990
4.7 TONER SUPPLY
[C]
[B]
[A]
[B]
To allow a compact design, the toner supply mechanism is built into the toner
cartridge. An agitator [A] in the toner cartridge turns when the toner supply
solenoid is on (toner supply spring clutch engaged). As the agitator rotates,
mylar strips [B] on the ends of the agitator force toner through small holes (0.5
mm) in a plastic strip [C] along one side of the toner cartridge. The toner
particles thus ejected from the cartridge fall into the development unit and are
mixed into the developer. The toner agitator turns at 120 rpm and the toner
supply rate is approximately 36 grams per minute.
When supplying toner, the CPU turns on the toner supply solenoid the length
of time required to supply the amount of toner specified by service program
#17.
2-26
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