Gestetner B070 Service Manual page 21

DETAILED DESCRIPTION
6. DETAILED DESCRIPTION .......................................................... 6-1
6.1 COMPONENT LAYOUT ............................................................................6-1
6.1.1 COPIER ENGINE .............................................................................6-1
6.2 PAPER PATH............................................................................................6-2
6.3 COPY PROCESS......................................................................................6-3
6.4 DRIVE LAYOUT ........................................................................................6-5
6.4.1 COPIER ENGINE .............................................................................6-5
6.5 ELECTRICAL COMPONENT DESCRIPTIONS ........................................6-6
6.5.1 COPIER ENGINE .............................................................................6-6
6.5.2 ADF ................................................................................................6-14
6.6 ADF .........................................................................................................6-15
6.6.1 OVERVIEW ....................................................................................6-15
6.6.2 PICK-UP ROLLER RELEASE ........................................................6-16
6.6.3 BOTTOM PLATE LIFT....................................................................6-17
6.6.4 PICK-UP AND SEPARATION ........................................................6-18
6.6.5 ORIGINAL FEED ............................................................................6-19
6.6.6 ORIGINAL SIZE DETECTION........................................................6-20
Original Length ...................................................................................6-20
Original Width .....................................................................................6-20
Original Width Sensor Location ..........................................................6-20
Detectable Paper Sizes ......................................................................6-20
6.6.7 ORIGINAL TRANSPORT ...............................................................6-21
6.6.8 ORIGINAL SKEW CORRECTION ..................................................6-22
6.6.9 ORIGINAL INVERSION AND FEED-OUT ......................................6-23
General Operation ..............................................................................6-23
Original Inversion ................................................................................6-24
Original Exit (Single-Sided Original Mode)..........................................6-25
Original Exit (Double-Sided Original Mode) ........................................6-26
6.6.10 ADF JAM CONDITIONS...............................................................6-27
Feed-in................................................................................................6-27
Feed-out .............................................................................................6-27
Inversion .............................................................................................6-27
6.7 SCANNING..............................................................................................6-28
6.7.1 OVERVIEW ....................................................................................6-28
6.7.2 SCANNER DRIVE ..........................................................................6-29
Magnification and Reduction...............................................................6-29
6.7.3 ORIGINAL SIZE DETECTION........................................................6-30
6.7.4 AUTO IMAGE DENSITY (ADS) ......................................................6-32
6.8 BOARD STRUCTURE.............................................................................6-33
6.8.1 BLOCK DIAGRAM..........................................................................6-33
6.8.2 COMPONENT DESCRIPTIONS ....................................................6-34
HDD (Hard Disk Drive)........................................................................6-36
6.9 IMAGE PROCESSING ............................................................................6-37
6.9.1 IMAGE PROCESSING STEPS AND RELATED SP MODES.........6-37
6.9.2 IMAGE PROCESSING OVERVIEW ...............................................6-38
6.9.3 IMAGE PROCESSING FLOW........................................................6-39
SM
CÓPIA NÃO CONTROLADA
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CÓPIA NÃO CONTROLADA
B070/B071