vii
6.9.7 TONER SUPPLY IN ABNORMAL SENSOR CONDITIONS...........6-48
ID Sensor............................................................................................6-48
TD Sensor...........................................................................................6-48
6.9.8 TONER NEAR END/END DETECTION AND RECOVERY............6-49
Toner Near End Detection ..................................................................6-49
Toner Near End Recovery ..................................................................6-49
Toner End Detection ...........................................................................6-49
Toner End Recovery ...........................................................................6-49
6.10 DRUM CLEANING AND TONER RECYCLING.....................................6-50
6.10.1 DRUM CLEANING........................................................................6-50
6.10.2 TONER RECYCLING ...................................................................6-50
6.11 PAPER FEED........................................................................................6-51
6.11.1 OVERVIEW ..................................................................................6-51
6.11.2 PAPER FEED DRIVE MECHANISM ............................................6-52
6.11.3 PAPER FEED AND SEPARATION MECHANISM........................6-52
6.11.4 PAPER LIFT MECHANISM ..........................................................6-53
6.11.5 PAPER END DETECTION ...........................................................6-53
6.11.6 PAPER SIZE DETECTION...........................................................6-54
Paper Tray ..........................................................................................6-54
By-pass Tray.......................................................................................6-55
6.11.7 SIDE FENCES..............................................................................6-56
6.11.8 PAPER REGISTRATION..............................................................6-56
6.12 IMAGE TRANSFER AND PAPER SEPARATION .................................6-57
6.12.1 OVERVIEW ..................................................................................6-57
6.12.2 IMAGE TRANSFER CURRENT TIMING......................................6-58
6.12.3 TRANSFER ROLLER CLEANING................................................6-59
6.12.4 PAPER SEPARATION MECHANISM...........................................6-59
6.13 IMAGE FUSING AND PAPER EXIT......................................................6-60
6.13.1 OVERVIEW ..................................................................................6-60
6.13.2 FUSING DRIVE AND RELEASE MECHANISM ...........................6-60
6.13.3 FUSING ENTRANCE GUIDE SHIFT............................................6-61
6.13.4 PRESSURE ROLLER...................................................................6-61
6.13.5 FUSING TEMPERATURE CONTROL..........................................6-62
Overview.............................................................................................6-62
Fusing Lamp Control...........................................................................6-64
Fusing Temperature Control for Thick Paper at the By-pass Tray......6-65
Pre-heat Mode (Fusing Idling) ............................................................6-65
To Prevent Offset when Making Multiple Copies
on Small-width Paper..........................................................................6-65
Reduced Copy Speed with Narrow Paper ..........................................6-65
6.13.6 OVERHEAT PROTECTION .........................................................6-66
6.14 DUPLEX UNIT.......................................................................................6-67
6.14.1 OVERALL .....................................................................................6-67
6.14.2 DRIVE MECHANISM....................................................................6-68
6.14.3 BASIC OPERATION.....................................................................6-69
Larger than A4 Short-edge/LT Short-edge..........................................6-69
Up to A4 Short-edge/LT Short-edge ...................................................6-70
6.14.4 FEED IN AND EXIT MECHANISM ...............................................6-71
6.15 ENERGY SAVER MODES ....................................................................6-72
