SM xv D014/D015/D078/D079
DETAILED DESCRIPTIONS
6. DETAILED DESCRIPTIONS....................................................6-1
6.1 GENERAL OVERVIEW.........................................................................6-1
6.1.1 MAIN MACHINE ..........................................................................6-1
6.2 LASER UNIT.........................................................................................6-3
6.2.1 DUAL BEAM WRITING................................................................6-3
6.2.2 LD SAFETY SWITCHES..............................................................6-3
6.3 BOARDS...............................................................................................6-5
6.3.1 OVERVIEW OF IMPORTANT COMPONENTS...........................6-5
6.3.2 IPU...............................................................................................6-6
SBU (Sensor Board Unit) ................................................................6-6
IPU (Image Processing Unit)...........................................................6-8
6.4 COPY PROCESS OVERVIEW .............................................................6-9
6.4.1 RAISING AND LOWERING OF THE ITB UNIT ...........................6-9
6.4.2 THE COPY PROCESS ..............................................................6-10
6.5 SCANNER UNIT .................................................................................6-13
6.5.1 OVERVIEW................................................................................6-13
6.5.2 ORIGINAL SIZE DETECTION ...................................................6-14
6.5.3 SCANNER UNIT FAN AND ANTI-CONDENSATION HEATER.6-17
6.6 PHOTOCONDUCTOR UNITS (PCU) .................................................6-18
6.6.1 OVERVIEW................................................................................6-18
6.6.2 AROUND THE DRUM ...............................................................6-20
6.6.3 DRUM DRIVE ............................................................................6-22
6.6.4 DRUM CHARGE........................................................................6-23
YCM PCUs....................................................................................6-23
K PCU ...........................................................................................6-24
6.6.5 DRUM CLEANING AND LUBRICATION ...................................6-25
6.6.6 PCU VENTILATION...................................................................6-26
Ozone Ventilation..........................................................................6-26
6.6.7 DEVELOPMENT UNIT ..............................................................6-27
Overview .......................................................................................6-27
Development Unit Operation .........................................................6-28
Development, PCU Unit Drive.......................................................6-29
6.7 USED TONER COLLECTION.............................................................6-30
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