Ricoh B064 - Page 24

Rev. 06/2005
6.4.4 BOTTOM PLATE LIFT....................................................................6-15
6.4.5 ORIGINAL SEPARATION ..............................................................6-16
6.4.6 ORIGINAL TRANSPORT ...............................................................6-17
6.4.7 ORIGINAL SKEW CORRECTION..................................................6-18
6.4.8 ORIGINAL SIZE DETECTION........................................................6-20
6.4.9 ADF SCANNING ............................................................................6-23
6.4.10 JAM DETECTION.........................................................................6-24
6.5 SCANNING (B140 SERIES/B064 SERIES) ............................................6-25
6.5.1 OVERVIEW ....................................................................................6-25
6.5.2 SCANNER DRIVE ..........................................................................6-26
6.5.3 ORIGINAL SIZE DETECTION........................................................6-27
Sensors...............................................................................................6-27
Detection Timing.................................................................................6-28
6.5.4 SCANNING MAGNIFICATION .......................................................6-29
Book Mode..........................................................................................6-29
6.5.5 AUTO IMAGE DENSITY (ADS)......................................................6-30
Xenon Lamp → CCD ADS..................................................................6-30
CIS ADS .............................................................................................6-30
6.6 IMAGE PROCESSING............................................................................6-31
6.6.1 OVERVIEW ....................................................................................6-31
6.6.2 IMAGE PROCESSING FLOW........................................................6-32
6.6.3 IMAGE PROCESSING MODES.....................................................6-33
6.6.4 IMAGE QUALITY SP ADJUSTMENTS...........................................6-34
Custom Settings for Each Mode: Image Quality .................................6-34
Custom Settings for Each Mode: Line Width Correction.....................6-36
Custom Setting: Duplex Scanning Mode Original Image Quality
Settings...............................................................................................6-38
Settings Adjustable for Each Original Mode........................................6-39
6.6.5 RELATION BETWEEN THE SP AND UP SETTINGS....................6-40
6.6.6 IMAGE PROCESSING TROUBLESHOOTING ..............................6-42
Removing Background from Coarse Paper ........................................6-42
Improving the Appearance of a Copy of a Color Document................6-42
Removing Vertical White Lines During Duplex Scanning....................6-43
Equalizing Duplex Scanned Image Quality of Front/Back Sides.........6-44
Equalizing Image Quality of Front Sides for Duplex and Simplex
Modes.................................................................................................6-44
6.7 LASER EXPOSURE................................................................................6-45
6.7.1 OVERVIEW ....................................................................................6-45
6.7.2 OPTICAL PATH..............................................................................6-46
6.7.3 FOUR-BEAM EXPOSURE .............................................................6-47
6.7.4 COOLING FAN...............................................................................6-48
6.7.5 LD SAFETY SWITCHES ................................................................6-49
6.8 DRUM UNIT ............................................................................................6-50
6.8.1 OVERVIEW ....................................................................................6-50
6.8.2 OPC DRUM....................................................................................6-51
6.8.3 DRUM DRIVE.................................................................................6-51
6.8.4 DRUM CHARGE.............................................................................6-52
6.8.5 CHARGE CORONA WIRE CLEANING..........................................6-53
6.8.6 DRUM PICK-OFF MECHANISM ....................................................6-54
B064 Series/B140 Series/G126 xii SM