Ricoh Aficio MP 3350B - Page 22

D017/D018/D019/D020 x SM
6.7.2 DRIVE .............................................................................................6-33
6.8 DRUM CHARGE.......................................................................................6-34
6.8.1 OVERVIEW .....................................................................................6-34
6.8.2 CHARGE ROLLER VOLTAGE CORRECTION ...............................6-35
6.8.3 ID SENSOR PATTERN PRODUCTION TIMING.............................6-36
6.8.4 DRUM CHARGE ROLLER CLEANING ...........................................6-36
6.9 DEVELOPMENT ......................................................................................6-37
6.9.1 OVERVIEW .....................................................................................6-37
6.9.2 DRIVE .............................................................................................6-38
6.9.3 DEVELOPER MIXING.....................................................................6-38
6.9.4 DEVELOPMENT BIAS ....................................................................6-39
6.9.5 TONER SUPPLY.............................................................................6-40
Toner Bottle Replenishment Mechanism ............................................6-40
Toner Supply Mechanism ...................................................................6-41
6.9.6 TONER DENSITY CONTROL .........................................................6-41
Overview.............................................................................................6-41
Toner Density Sensor Initial Setting....................................................6-44
Toner Density Measurement...............................................................6-44
Vsp/Vsg Detection ..............................................................................6-44
Toner Supply Reference Voltage (Vref) Determination.......................6-44
Toner Supply Determination ...............................................................6-45
Toner Supply Motor On Time Determinations.....................................6-45
6.9.7 TONER SUPPLY IN ABNORMAL SENSOR CONDITIONS............6-46
ID sensor ............................................................................................6-46
TD Sensor...........................................................................................6-46
6.9.8 TONER NEAR-END/END DETECTION AND RECOVERY.............6-47
Toner Near-end Detection ..................................................................6-47
Toner Near-end Recovery ..................................................................6-47
Toner End Detection ...........................................................................6-47
Toner End Recovery ...........................................................................6-47
6.10 DRUM CLEANING AND TONER RECYCLING ..................................6-48
6.10.1 DRUM CLEANING.....................................................................6-48
6.10.2 TONER RECYCLING ................................................................6-49
6.11 PAPER FEED .....................................................................................6-50
6.11.1 OVERVIEW................................................................................6-50
6.11.2 PAPER FEED DRIVE ................................................................6-51
6.11.3 PAPER FEED AND SEPARATION............................................6-52