COPYRIGHT © 2002 CANON INC. CANON CLC1100/1130/1150/1160/1180 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)viCHAPTER 3 EXPOSURE SYSTEMI. OPERATION................................3-1A. Outline ....................................3-1B. Basic Sequence ofOperations..............................3-21. Sequence ofOperations........................3-22. Scanner Home PositionSensor and Operation ......3-3II. SCANNER DRIVE SYSTEM.......3-4A. Controlling the ScannerMotor ......................................3-41. Outline ..............................3-42. Operations........................3-5B. Changing the ReproductionRatio .......................................3-5III. CONTROLLING THE INTENSITYOF THE SCANNING LAMP ........3-6A. Outline ....................................3-6B. Operations..............................3-71. Turning On/Off theScanning Lamp ................3-72. Detecting the Activationof the Scanning Lamp ......3-73. Detecting an Error in theActivation of theScanning Lamp ................3-74. Controlling the Intensityof the Scanning Lamp ......3-7IV. DISASSEMBLY/ASSEMBLY .......3-8A. Original Exposure System .....3-91. Removing the ScanningLamp ................................3-92. Orienting the ScanningLamp ................................3-93. Removing the StandardWhite Plate .................... 3-104. Mounting the StandardWhite Plate .................... 3-10B. Scanner Drive Assembly ..... 3-111. Removing the ScannerDrive Motor .................... 3-112. Adjusting the Tension of theBelt When Mounting theScanner Drive Motor ..... 3-113. Routing the ScannerCable ............................. 3-11CHAPTER 4 IMAGE PROCESSING SYSTEMI. OUTLINE .....................................4-1II. CCD/CCD DRIVE ........................4-2A. Controlling the CCD ...............4-2B. CCD Driver Circuit..................4-2III. ANALOG IMAGEPROCESSING ............................4-3IV. DIGITAL IMAGEPROCESSING ............................4-4A. Outline ....................................4-4B. Shading Correction ................4-6a. Shading Correction ..........4-6C. 3-Line CCD PositionMatching Circuit ......................4-7D. Sensor Color CorrectionCircuit .....................................4-7E. Original Position DetectionCircuit .....................................4-8F. Black Detection Circuit andEdge/Line WidthDetection Circuit .....................4-9G. Chromatic Space CorrectionCircuit .................................. 4-10H. Direct Mapping Circuit......... 4-10I. Logarithmic Correction andBGR-to-YMC Conversion .... 4-11a. Logarithmic Correction .. 4-11b. BGR-to-YMC Conversion4-11J. Toner Color CorrectionCircuit .................................. 4-12K. Coloring/ContourProcessing .......................... 4-12L. Density Processing ............. 4-13M. Enlargement/Reduction,Shift, and Edit Processing ... 4-13N. Sharpness/FilterProcessing .......................... 4-14O. Anti-CounterfeitMechanism .......................... 4-141. Counterfeit TracingMechanism .................... 4-14
