Canon Vizcam 1000, Руководство по обслуживанию

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COPYRIGHT © 2001 CANON INC. CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
3-119
3. OPERATION AND TIMING
The Bk toner hopper is equipped with a toner sensor, which is a piezoelectric oscillator.
The level of toner inside the main hopper is monitored by a sensor (TS5), and the level of toner inside the
sub hopper is monitored by another sensor (TS4).
When the level of toner inside the sub hopper falls under the sensor, the message “ADD TONER” will be
indicated on the control panel after copying.
Figure 3-550
Toner is supplied to the main hopper as follows:
When a specific period of time passes after toner supply operation, the signal from the sensor is read by
the DC controller; if the absence of toner is detected, the sub hopper starts to supply toner.
If the main hopper toner sensor (TS5) detects the absence of toner eight times in a row despite toner
supply operation, ‘E020’ will be indicated on the control panel after copying operation.
Figure 3-551
Toner level detection (lower) signal (BKTEPL*)
Toner level detection (upper) signal (BKTEPU*)
DC
controller
PCB
Toner level
sensor (upper)
(TS4)
Toner level
sensor (lower)
(TS5)
Bk toner supply clutch (upper; CL4)
Toner level sensor (lower; TS5)
Bk toner supply clutch (lower; CL5)
Image formation Image formation
Sheet
gap
Supply to developing
assembly
1.2 sec
0.7 sec
1.2 sec
Toner absent
Toner present