REGISTRATION/ADU/REVERSE/PAPER EXIT hp Color 9850mfp II UNIT EXPLANATION 2-50 Symbol Name Function or method [6] Decurler roller Paper conveyance and paper curl correction in the reverse section Motor drive [7] Fixing section Fixing of paper that has been transferred See "12. Fixing Section." [8] ADU conveyance roller 1 Paper conveyance while in the double side copy mode Motor drive [9] Separation discharge plate unit Separation of the transfer belt and the paper that has been transferred Constant current AC + DC bias applied discharging method Constant current method AC output range: 0 to 300 µA Constant voltage method DC output range:
-60 to 0 µA [10] 2nd transfer roller L Transfer of toner from the transfer belt onto paper Pressure/release mechanism by means of cam Driven idly by the transfer belt [11] Transfer belt unit Image formation for paper transfer See "5. Transfer belt unit." [12] Pre-transfer guide plate Conveyance guide of paper supplied High voltage applied to prevent toner adhesion:
-500 V ± 50 V (constant voltage) [13] Pressure arm 2nd transfer roller L pressure/release Motor drive [14] Registration roller For paper conveyance in the registration section and the cor- rection of paper skew caused by the paper stopper Motor drive [15] Registration cleaning sheet Cleaning of the registration roller PET method [16] Loop roller For paper conveyance in the registration section and loop for- mation while in paper skew correction Motor drive [17] ADU pre-registration roller For paper conveyance while in the double side copy mode and the correction of paper skew correction caused by the paper stopper Motor drive [18] Intermediate conveyance roller 3 Paper conveyance from the paper feed trays 1 to 3, the by- pass tray and HCI Motor drive [19] By-pass tray By-pass paper feed See "9.
By-pass feed section." [20] Intermediate conveyance roller 2 Paper conveyance from the paper feed trays 1 to 3 and HCI Motor drive [21] ADU lock solenoid (SD6) ADU lock 24VDC drive HV2 High voltage unit 2 Supply of high voltage to the separation discharge plate unit and the pre-transfer guide plate Pressure rise method by the inverter from 24VDC