Konica Minolta bizhub C658 Service Manual page 1818

bizhub C658/C558/C458/C368/C308/C258
[1]
[1] Toner empty sensor: OFF
[3] Toner empty sensor: ON
6.4.3 Toner replenishing from toner hopper to developing unit
(1) Toner replenishing control
• Control of replenishing the developing unit with toner from the toner hopper is performed only when the developing unit is driven.
• The toner replenishing time (the amount of toner supplied) during the toner replenishing control is determined based on the T/C ratio
detected by the TCR sensor (noncontact magnetic type) disposed at the developing unit for each color of toner and the amount of toner
to be consumed (estimated) for the image to be printed.
• If replenishing is interrupted by a paper misfeed, the front door opened or closed, or any similar event, the required replenishing time is
carried forward to the next replenishing control sequence.
• For details of the TCR sensor, see "
(2) Toner replenishing mechanism
• Four toner supply motors drive the toner conveying screws and the toner agitating blades provided in the toner hoppers of four different
colors of toner.
• The toner supply motor of each color drives the toner conveying screw and the toner agitating blade.
• The toner agitating blade rotates to agitate toner in the toner hopper.
• The toner conveying screw rotates to replenish the developing unit with toner.
[3]
[2]
[1]
[12]
[1] Drive from toner supply motor/Y
[3] Drive from toner supply motor/C
[5] Toner conveying screw/K
[7] Toner conveying screw/C
[9] Toner conveying screw/M
[11] Toner conveying screw/Y
(3) Toner agitating blade drive
1. Toner conveying screw is rotated by the driving of the toner supply motor.
2. The rotation of the toner conveying screw is transmitted to the toner agitating blade drive gear, which results in the toner agitating blade
being rotated. The toner agitating blade rotates to agitate toner in the toner hopper.
3. The cam mounted coaxially with the toner agitating blade moves the detection plate and actuator up and down.
*: For details of the toner empty sensor, see "
O THEORY OF OPERATION bizhub C658/C558/C458/C368/C308/C258 > 6. TONER
[3]
[2]
O.5.3.7 Toner density control".
[7]
[8]
[9]
[10]
[11]
O.6.4.9 Toner empty detection
O-43
[2] Toner
- -
[4]
[5]
[6]
[2] Drive from toner supply motor/M
[4] Toner supply motor/K (M6)
[6] Toner agitating blade/K
[8] Toner agitating blade/C
[10] Toner agitating blade/M
[12] Toner agitating blade/Y
control".
SUPPLY SECTION