Sharp Digital Copier, AL-840, AL-800 service manual Transfer/separation section

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c. Transfer/separation section

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No.		Parts	Note
No.			Note
	Name	Function/operation

1	Transfer roller	Transfers toner images on the OPC drum onto the paper.

2	Transfer roller	Connects the transfer roller and the transfer voltage output (high voltage PWB).
	electrode

3	Pressure spring	Applies pressure to the transfer roller, paper, and the OPC drum to improve
		transfer efficiency.

4	Separation electrode	Reduces paper charging potential to facilitate separation of paper.

5	Earth electrode	Connects the separation electrode and the earth (high voltage PWB).

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Image 19

Contents Model AL-800/840 Operating Principle Scanner read section Fusing/paper exit sectionHigh voltage power PWB Power PWBPaper path and imaging Copy modeImage process and data flow Printer mode Data Flow DiagramPUS Paper feed, paper transport sectionOutline Major partsPaper Size PE Sensor PempPUS PIN SensorOperation Paper release operation Scanner reading section Sensor MhpsCCD CCD OUT CCDAsic IC8 Mcupcu PWB Wiring diagramScanner writing section Block diagramMcupcu PWB LSU PWB SyncICU PWB Image process section Image forming process diagram OPC Photoconductor sectionDevelopment section Transfer/separation section CPU IC5 System diagramSeparation electrode Photoconductor drum unitDeveloping unit Transfer charger rollerActual image forming process Paper Transfer roller Residual toner OPC drum OPC drum surface potential OPC drum surface potential and developing biasModel Fusing/paper exit sectionRTH AMP CN2 AC PowerHlon HLL CompCPU IC5 MEN MMT0 MMT1 Wiring diagramDrive section AsicMajor sections operations and functions Electrical sectionPower PWB High voltage power PWBCopy lamp control PWB Operation PWB Copyright 1998 by Sharp Corporation

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