Ricoh A-C4 - Page 12

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Toner Near End ..................................................................................6-67
Toner End ...........................................................................................6-67
6.9.7 TONER END RECOVERY .............................................................6-68
6.9.8 TONER SUPPLY WITH ABNORMAL SENSORS ..........................6-68
6.10 DRUM CLEANING AND TONER RECYCLING.....................................6-69
6.10.1 DRUM CLEANING........................................................................6-69
6.10.2 TONER RECYCLING ...................................................................6-69
6.11 PAPER FEED........................................................................................6-70
6.11.1 OVERVIEW ..................................................................................6-70
6.11.2 PAPER FEED DRIVE ...................................................................6-71
6.11.3 PICK-UP AND SEPARATION ROLLER
RELEASE MECHANISM .............................................................6-71
6.11.4 PAPER LIFT .................................................................................6-72
6.11.5 PAPER END DETECTION ...........................................................6-73
6.11.6 PAPER REGISTRATION..............................................................6-74
6.11.7 PAPER SIZE DETECTION...........................................................6-75
6.12 BY-PASS TRAY ....................................................................................6-76
6.12.1 OVERVIEW ..................................................................................6-76
6.12.2 BY-PASS TRAY OPERATION .....................................................6-77
6.12.3 BY-PASS PAPER SIZE DETECTION ..........................................6-78
6.13 DUPLEX UNIT.......................................................................................6-79
6.13.1 OVERVIEW ..................................................................................6-79
6.13.2 DUPLEX DRIVE LAYOUT ............................................................6-80
6.13.3 DUPLEX BASIC OPERATION .....................................................6-81
Longer than A4 lengthwise/LT lengthwise ..........................................6-81
Up to A4 lengthwise/LT lengthwise.....................................................6-81
6.13.4 DUPLEX UNIT FEED IN AND EXIT MECHANISM.......................6-82
Feed-in................................................................................................6-82
Inversion and Exit ...............................................................................6-82
6.14 IMAGE TRANSFER AND PAPER SEPARATION .................................6-83
6.14.1 OVERVIEW ..................................................................................6-83
6.14.2 BELT DRIVE MECHANISM..........................................................6-84
6.14.3 TRANSFER BELT UNIT CONTACT MECHANISM ......................6-84
6.14.4 IMAGE TRANSFER AND PAPER
SEPARATION MECHANISM........................................................6-85
6.14.5 TRANSFER BELT CHARGE ........................................................6-86
Mechanism .........................................................................................6-86
Correction for paper width and thickness............................................6-87
Currents applied to leading edge, image areas - by-pass feed...........6-88
6.14.6 TRANSFER BELT CLEANING MECHANISM ..............................6-89
6.15 IMAGE FUSING AND PAPER EXIT......................................................6-90
6.15.1 OVERVIEW ..................................................................................6-90
6.15.2 FUSING DRIVE ............................................................................6-91
6.15.3 FUSING DRIVE RELEASE MECHANISM....................................6-91
6.15.4 FUSING ENTRANCE GUIDE SHIFT MECHANISM .....................6-92
6.15.5 EXIT GUIDE PLATE AND DE-CURLER ROLLERS.....................6-92
6.15.6 PRESSURE ROLLER...................................................................6-93
6.15.7 CLEANING MECHANISM ............................................................6-94
6.15.8 HOT ROLLER STRIPPER CLEANING.........................................6-95