Oki C9850 Maintenance Manual page 47

Toner High level State
• The agitation bar interlocks and turns with
the agitation gear.
• Since there is a toner even if a agitation
bar reaches the maximum height, the
other side of the bar is still inside the
toner. Therefore, the agitation bar turns by
the force of the agitation gear.
Toner Low Level State
• When the agitation bar reaches the
maximum height, the agitation bar falls
in the minimum height by prudence since
there is no resistance by the toner. At this
time, the minimum height length of stay of
a target board becomes long. This time is
measured and a toner low level state is
detected.
Toner Supply Operation
• When continuation 3 cycle detection of
the toner low level state is carried out, a
toner supply agitator and a toner cartridge
agitation spring will rotate, and the toner
of a toner cartridge will be supplied to the
inside of an image drum cartridge. Then,
when one cycle of toner high level is de-
tected, toner supply agitator and a toner
cartridge agitation spring will stop, and
toner supply will stop.
43627911TH Rev. 3
Agitation bar
Target board
Toner cartridge
agitation spring
Toner supply agitator
Agitation bar
Target board
Oki Data CONFIDENTIAL
Rotation direction of
toner supply agitator
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