Canon imageRUNNER ADVANCE 6075 Series Service Manual

Contents

Canon imageRUNNER ADVANCE 6075 Series Service Manual Manual pdf 110 page image

22 2-562-56Technology > Image Formation System > Controls > DevelopingTechnology > Image Formation System > Controls > DevelopingThe shutter is open or closed by the cleaning mechanism of the Primary Charging Wire.The Primary Charging Shutter is made of fiber and usually taken up by the bobbin.The drive of the Primary Charging Wire Cleaning Motor (M6) moves the Cleaning Pad to therear and the shutter taken up by the bobbin becomes extended to make the Shutter closed.Because the Shutter comes between the Grid Wire and the Photosensitive Drum, dischargeproducts from the Primary Charging Assembly do not reach the Photosensitive Drum.The Primary Charging Shutter Position Sensor (PS94) detects opening/close of the shutter.Charging ShutterPrimary Charging WireCleaning Motor(M6)Primary ChargingShutter Sensor(PS94)ScrewPrimary Charging WireGrid WireGrid WireCharging ShutterPhotosensitive DrumPrimary Charging WireE060-0001 Primary Charging Shutter HP open errorE060-0002 Primary Charging Shutter HP close errorF-2-76■ Developing● Developing Bias ControlTo form a toner image on the Photosensitive Drum by charging toner on the DevelopingCylinder.The developing bias (AC, DC positive), which has been generated on the Develop HighVoltage PCB (PCB12), is applied to the Developing Cylinder.• Developing DC bias• The bias to generate potential difference with the Photosensitive Drum.• The bias value is determined based on the environment and the estimated life.• Developing AC bias• The bias to improve image quality.• The bias value is fixed.Developing CylinderPhotosensitive DrumAC+DC positiveDeveloping High Voltage PCB(PCB12)F-2-77