Ricoh A-P4 - Page 19

Drum Toner Seals......................................................................................................................................316
New PCDU Unit Detection ......................................................................................................................316
New Unit Detection Mechanism.....................................................................................................316
What Happens When a New Unit Is Detected..............................................................................318
Drum Charge.................................................................................................................................................319
Overview of Drum Charge.......................................................................................................................319
Charge Roller Voltage Correction...........................................................................................................320
Correction for Environmental Conditions........................................................................................320
Correction for Paper Width and Thickness (By-pass Tray only)...................................................321
ID Sensor Pattern Production Timing........................................................................................................321
Drum Charge Roller Cleaning..................................................................................................................323
Development..................................................................................................................................................324
Overview of Development........................................................................................................................324
Drive Mechanism.......................................................................................................................................325
Developer Mixing.....................................................................................................................................325
Development Bias......................................................................................................................................326
Development Bias Mechanism........................................................................................................326
Correction for Paper Width and Thickness (By-pass Tray only)...................................................326
Toner Supply..............................................................................................................................................328
Toner Bottle Replenishment Mechanism.........................................................................................328
Toner Supply Mechanism................................................................................................................329
Toner Density Control.......................................................................................................................329
Sensor Control Mode.......................................................................................................................330
TD Sensor..........................................................................................................................................330
ID Sensor...........................................................................................................................................330
Image Pixel Count Mode.................................................................................................................330
Toner Near End/End Detection...............................................................................................................331
Standard Method for Toner Near-End/End Condition Detection...............................................331
Adjustable Near-end Warning Method.........................................................................................331
Toner End Recovery..................................................................................................................................331
Toner Supply with Abnormal Sensors......................................................................................................332
Drum Cleaning and Toner Recycling...........................................................................................................333
Drum Cleaning...........................................................................................................................................333
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