COPYRIGHT © 2002 CANON INC.
2001 2001
CANON iR1600/iR2000/iR1610/iR2010 SERIES REV.0 MAR. 2002
xi
CONTENTS
1 Outline of Operation .......................... 3-1
1.1
Outline ....................................... 3-1
2 Reader Drive System ......................... 3-2
2.1
Outline ....................................... 3-2
2.2
Controlling the Reader Motor ... 3-3
2.2.1
Moving the Carriage in
Reverse After an
Image Scan .......................... 3-3
3 Detecting the Size of Originals ......... 3-4
3.1
Outline ....................................... 3-4
3.2
Detection by the
Original Size Sensors ................ 3-4
3.3
Detecting the Size of
Originals .................................... 3-6
3.4
Detection by the ADF ............... 3-7
4 Image Processing ............................... 3-8
4.1
Outline ....................................... 3-8
4.2
Contact Sensor ........................... 3-9
4.2.1
Outline of the Contact
Sensor .................................. 3-9
4.2.2
Construction of the Contact
Sensor (CS) ....................... 3-10
4.3
A/D Conversion ....................... 3-11
4.4
Shading Correction .................. 3-11
4.4.1
Black Shading
Correction .......................... 3-12
4.4.2
White Shading
Correction .......................... 3-12
4.5
Re-Ordering ............................. 3-12
4.6
ABC
(auto background control) ....... 3-13
CHAPTER 3 IMAGE READING/PROCESSING SYSTEM
4.7
LED Intensity Adjustment ...... 3-14
4.8
Enlargement/Reduction ........... 3-14
4.8.1
Enlargement/Reduction in
Main Scanning Direction .. 3-14
4.8.2
Changing the Reproduction
Ratio in Sub Scanning
Direction ............................ 3-16
4.9
Edge Emphasis ........................ 3-17
4.10 Editing ..................................... 3-17
4.11 Density Conversion (LUT, i.e.,
look-up table processing) ........ 3-17
4.11.1 Density Adjustment
(F-value conversion) ......... 3-17
4.11.2 Density Correction
(
γ
correction) ..................... 3-17
4.12 Binary Processing .................... 3-18
4.12.1 Error Diffusion .................. 3-18
4.13 Image Memory Control ........... 3-18
4.13.1 Compression/Expansion,
Rotation, and Enlargement/
Reduction .......................... 3-18
4.13.2 SDRAM ............................. 3-18
4.14 Output Image Processing ........ 3-19
4.14.1 Smoothing ......................... 3-19
5 Disassembly and Assembly ............. 3-20
5.1
Copyboard Glass ..................... 3-21
5.1.1
Removing the
Copyboard Glass ............... 3-21
5.1.2
After Replacing the
Copyboard Glass ............... 3-22
1.3.2
Wiring Diagram of the Electrical
Components (1/2) ................ 2-7
1.3.3
Wiring Diagram of Electrical
Components (2/2) ................ 2-8
1.4
Basic Sequence of Operation .... 2-9
1.4.1
Outline ................................. 2-9
1.4.2
Basic Sequence of Operation
(power-on) ......................... 2-10
1.4.3
Basic Sequence of Operation
(printing) ........................... 2-11
1.5
Controlling the Main Motor
(M101) ..................................... 2-13
1.5.1
Outline ............................... 2-13
Содержание iR1600 Series
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