Ricoh B089 Manuel d'entretien - Page 3

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2.6 DRUM CHARGE .....................................................................................2-28

2.6.1 OVERVIEW ....................................................................................2-28

2.6.1 CHARGE ROLLER VOLTAGE CORRECTION ..............................2-29

2.6.2 ID SENSOR PATTERN PRODUCTION TIMING............................2-30

2.6.3 DRUM CHARGE ROLLER CLEANING ..........................................2-31

2.7 DEVELOPMENT .....................................................................................2-32

2.7.1 OVERVIEW ....................................................................................2-32

2.7.2 DRIVE.............................................................................................2-33

2.7.3 DEVELOPER MIXING ....................................................................2-34

2.7.4 DEVELOPMENT BIAS ...................................................................2-35

2.7.5 TONER SUPPLY ............................................................................2-36

2.7.6 TONER DENSITY CONTROL ........................................................2-38

2.7.7 TONER SUPPLY IN ABNORMAL SENSOR CONDITIONS...........2-42

2.7.8 TONER NEAR END/END DETECTION AND RECOVERY............2-42

2.8 DRUM CLEANING AND TONER RECYCLING.......................................2-44

2.8.1 DRUM CLEANING..........................................................................2-44

2.8.2 TONER RECYCLING .....................................................................2-45

2.9 PAPER FEED..........................................................................................2-46

2.9.1 OVERVIEW ....................................................................................2-46

2.9.2 PAPER FEED DRIVE MECHANISM ..............................................2-47

2.9.3 PAPER FEED AND SEPARATION MECHANISM..........................2-48

2.9.4 PAPER LIFT MECHANISM ............................................................2-49

2.9.5 PAPER END DETECTION .............................................................2-50

2.9.6 PAPER HEIGHT DETECTION .......................................................2-51

2.9.7 FEED PRESSURE ADJUSTMENT FOR PAPER SIZE..................2-52

2.9.8 PAPER SIZE DETECTION.............................................................2-55

2.9.9 SPECIAL PAPER SETTING...........................................................2-56

2.9.10 SIDE AND END FENCES.............................................................2-57

2.9.11 PAPER REGISTRATION..............................................................2-58

2.10 IMAGE TRANSFER AND PAPER SEPARATION .................................2-59

2.10.1 OVERVIEW ..................................................................................2-59

2.10.2 IMAGE TRANSFER CURRENT TIMING......................................2-60

2.10.3 TRANSFER ROLLER CLEANING................................................2-61

2.10.4 PAPER SEPARATION MECHANISM...........................................2-61

2.11 IMAGE FUSING AND PAPER EXIT......................................................2-62

2.11.1 OVERVIEW ..................................................................................2-62

2.11.2 FUSING DRIVE AND RELEASE MECHANISM ...........................2-63

2.11.3 FUSING ENTRANCE GUIDE SHIFT MECHANISM .....................2-64

2.11.4 PRESSURE ROLLER...................................................................2-65

2.11.5 CLEANING MECHANISM ............................................................2-65

2.11.6 FUSING TEMPERATURE CONTROL..........................................2-66

2.11.7 OVERHEAT PROTECTION .........................................................2-68

2.11.8 PAPER EXIT ................................................................................2-68

2.12 ENERGY SAVER MODES ....................................................................2-69

2.12.1 OVERVIEW ..................................................................................2-69

2.12.2 ENERGY SAVER MODE..............................................................2-70

2.12.3 AUTO OFF MODE........................................................................2-71

B089/B093