Operation; Charge Corona Unit On/Off Control; Ozone Ventilation Mechanism - Konica Minolta magicolor 4690MF Service Manual

12. Print unit section (charge corona)

12.2 Operation

12.2.1

Charge corona unit ON/OFF control

Polygon motor
semiconductor laser
Transport motor (M3)
Color PC drum motor (M2)
Color developing motor (M1)
K developing motor (M5)
Charge YMC
12.2.2

Ozone ventilation mechanism

• Ozone stagnant in areas near the charge corona unit reduces sensitivity of the photo
conductor, causing white bands to occur in the image.
• The ozone filter is used to remove ozone produced by the charge corona unit, thereby
preventing sensitivity of the photo conductor surface from being degraded.
• Outside air is drawn in through the opening provided at the front end of the charge
corona unit and is discharged together with ozone through the opening provided in the
rear.
• The ozone ventilation fan motor located in the rear of the main body draws air to allow
the discharged ozone to be removed by the ozone filter.
Ozone ventilation fan motor (FM3)
32
Charge K
Ozone filter
Theory of operation Ver. 1.0 May 2008
K
C
M
A011T2C574AA
Y
A011T2C579AA