Olivetti d-Color MF4003 Service Manual page 592

d-Color MF4003/MF3303
[10]
[9]
[8]
[1] Color motor (M2)
[3] Cleaning roller/K
[5] Cleaning roller/C
[7] Cleaning roller/M
[9] Cleaning roller/Y
(3) Operation
(a) Charge mechanism
[1] Charging roller
Charge roller
• Charge rollers are used for charging the photoconductor.
• As compared with the charge wire, the charge roller applies a lower voltage and thus produces a smaller amount of ozone. The main
body is not therefore mounted with any ozone filter.
• The charge roller is driven to follow the movement of the photoconductor.
Cleaning roller
• The cleaning roller removes toner stick to the charge roller.
• The cleaning roller is driven to follow the movement of the charge roller.
(b) Charge corona control
• High voltage DC negative charge is applied to the charge roller. Charge discharged the surface of the photoconductor to become
uniformly charged via the charge roller.
• The charge corona voltage supplied from the high voltage unit is applied to the terminal of the charge roller of each color.
Service Manual
[7]
[6]
[5]
P THEORY OF OPERATION > 1. d-Color MF4003/MF3303
[1]
[3]
[4]
[2] Main motor (M1)
[4] Charging roller/K
[6] Charging roller/C
[8] Charging roller/M
[10] Charging roller/Y
[1]
[2]
[2] Cleaning roller
P-18
[2]
Y119930-3