Phaser 3300MFP Service Manual 2-13Theory of OperationTransfer AssemblyThe Transfer Assembly consists of the Transfer Roller and gear.The transfer roller delivers the toner from the OPC drum to the paper.■ TR Voltage: +1.3 KV ± 5% (based on 200 ΜΩ, in accordance with mediaarea, Transfer table)■ -1.20 KV ± 10% (In cleaning)■ Transfer Efficiency: 85% or more (All environment: preferable media)■ Voltage System: Voltage PWM Control System■ Transfer Roller■ Hardness: 40 °C ± 3% (ASKER-C)■ Valid length: 224.2 + 0.5/-0 mm■ OD:ϕ 15.0 ± 0.5 mm■ SHAFT Material: SUM -24L + Non-electrolysis Ni. Coating■ Life Span: Print over 70,000 sheets (in 15 ~ 30 °C)Driver AssemblyMotor■ Spec: BLDCφ 62 + PMφ 55 Motor (2-2 Bipolar) + PMφ 42 Motor (2-2Bipolar)■ Pull-Out Torque:■ BLDCφ 62: 1500 gf.cm (based on actual value) or more (1342.4 rpm,1.8 A)■ PMφ 55: 1490 gf.cm (based on actual value) or more (711 pps, 0.9 A)■ PMφ 42: 240 gf.cm (based on actual value) or more (1850 pps, 0.6 A)■ TORQUE MARGIN (Tp/o VTsys): BLDCφ 62 Motor: 1500/1100 gf.cm =1.36■ PMφ 55 Motor: 1490/1053 gf.cm = 1.41■ PMφ 42 Motor: 240/165 gf.cm = 1.45■ Driving Frequency: BLDCφ 62 Motor: 1342.4 rpm (1006.8 Clock)■ PMφ 55 Motor: 888.75 rpm (711 pps)■ PMφ 42 Motor: 1156.25 rpm (1850 pps)■ It is a power delivery unit by gearing: BLDCφ 62 Motor -> Pickup/Feeder/Print Cartridge■ PMφ 55 Motor -> Fuser/Exit■ PMφ 42 Motor -> Duplex
