G179 x SM
6.5.2 DRUM CLEANING ..........................................................................6-14
6.5.3 DRIVE MECHANISM.......................................................................6-15
6.5.4 DRUM PAWLS ................................................................................6-15
6.5.5 NEW PCDU UNIT DETECTION ......................................................6-16
New Unit Detection Mechanism ..........................................................6-16
What Happens When a New Unit Is Detected ....................................6-17
6.6 DRUM CHARGE.......................................................................................6-18
6.6.1 OVERVIEW .....................................................................................6-18
6.6.2 CHARGE ROLLER VOLTAGE CORRECTION ...............................6-19
Correction for Environmental Conditions ............................................6-19
Correction for Paper Width and Thickness .........................................6-20
6.6.3 ID SENSOR PATTERN PRODUCTION TIMING.............................6-21
6.6.4 DRUM CHARGE ROLLER CLEANING ...........................................6-21
6.7 DEVELOPMENT ......................................................................................6-22
6.7.1 OVERVIEW .....................................................................................6-22
6.7.2 DRIVE MECHANISM.......................................................................6-23
6.7.3 DEVELOPER MIXING.....................................................................6-23
6.7.4 DEVELOPMENT BIAS ....................................................................6-24
Mechanism .........................................................................................6-24
Correction for paper width and thickness (by-pass tray only)..............6-24
6.7.5 TONER SUPPLY.............................................................................6-26
Toner Bottle Replenishment Mechanism ............................................6-26
Toner Supply Mechanism ...................................................................6-27
Toner Density Control .........................................................................6-27
Sensor Control Mode ..........................................................................6-27
Image Pixel Count Mode.....................................................................6-28
6.7.6 TONER NEAR END/END DETECTION ..........................................6-28
Toner Near End ..................................................................................6-28
Toner End ...........................................................................................6-28
6.7.7 TONER END RECOVERY ..............................................................6-29
6.7.8 TONER SUPPLY WITH ABNORMAL SENSORS ...........................6-29
6.8 DRUM CLEANING AND TONER RECYCLING........................................6-30
6.8.1 DRUM CLEANING ..........................................................................6-30
6.8.2 TONER RECYCLING ......................................................................6-31
6.9 PAPER FEED...........................................................................................6-32
6.9.1 OVERVIEW .....................................................................................6-32
6.9.2 PAPER FEED DRIVE......................................................................6-33
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