Ricoh B003 Service Manual page 810

6.12 BY-PASS TRAY............................................................................... 6-61
6.12.1 OVERVIEW............................................................................. 6-61
6.12.2 BY-PASS TRAY OPERATION.................................................. 6-62
6.12.3 BY-PASS PAPER SIZE DETECTION....................................... 6-63
6.13 DUPLEX UNIT................................................................................. 6-64
6.13.1 OVERVIEW............................................................................. 6-64
6.13.2 DUPLEX DRIVE LAYOUT ........................................................ 6-65
6.13.3 DUPLEX BASIC OPERATION.................................................. 6-66
Larger than A4 lengthwise/LT lengthwise ........................................ 6-66
Up to A4 lengthwise/LT lengthwise ................................................. 6-66
6.13.4 DUPLEX UNIT FEED IN AND EXIT MECHANISM ..................... 6-67
Feed-in......................................................................................... 6-67
Inversion and Exit .......................................................................... 6-67
6.14 IMAGE TRANSFER AND PAPER SEPARATION............................... 6-68
6.14.1 OVERVIEW............................................................................. 6-68
6.14.2 BELT DRIVE MECHANISM ...................................................... 6-69
6.14.3 TRANSFER BELT UNIT CONTACT MECHANISM .................... 6-69
6.14.4 IMAGE TRANSFER AND PAPER SEPARATION MECHANISM . 6-70
6.14.5 TRANSFER BELT CHARGE .................................................... 6-71
Mechanism ................................................................................... 6-71
Correction for paper width and thickness......................................... 6-72
Currents applied to leading edge and image areas, and for
by-pass feed.............................................................................. 6-73
6.14.6 TRANSFER BELT CLEANING MECHANISM ............................ 6-74
6.15 IMAGE FUSING AND PAPER EXIT.................................................. 6-75
6.15.1 OVERVIEW............................................................................. 6-75
6.15.2 FUSING DRIVE....................................................................... 6-76
6.15.3 FUSING DRIVE RELEASE MECHANISM ................................. 6-76
6.15.4 FUSING ENTRANCE GUIDE SHIFT MECHANISM ................... 6-77
6.15.5 EXIT GUIDE PLATE AND DE-CURLER ROLLERS ................... 6-77
6.15.6 PRESSURE ROLLER .............................................................. 6-78
6.15.7 CLEANING MECHANISM ........................................................ 6-78
6.15.8 FUSING TEMPERATURE CONTROL....................................... 6-79
Temperature Control...................................................................... 6-79
Fusing Idling Temperature ............................................................. 6-80
6.15.9 OVERHEAT PROTECTION...................................................... 6-80
6.16 ENERGY SAVER MODES ............................................................... 6-81
6.16.1 OVERVIEW............................................................................. 6-81
6.16.2 ENERGY SAVER MODE ......................................................... 6-82
Entering the energy saver mode ..................................................... 6-82
What happens in energy saver mode.............................................. 6-82
Return to stand-by mode................................................................ 6-82
6.16.3 AUTO OFF MODE................................................................... 6-83
Entering off stand-by and off modes................................................ 6-83
Off Stand-by mode ........................................................................ 6-83
Off Mode ...................................................................................... 6-83
Returning to stand-by mode ........................................................... 6-83
6.17 SOFTWARE HISTORY...........................................................6.84
6.17.1 ENGINE SOFTWARE MODIFICATION HISTORY......................6.84
B003/B004/B006/B007
CÓPIA NÃO CONTROLADA
viii
CÓPIA NÃO CONTROLADA
Rev. 02/2002
SM