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CONTENTS
CHAPTER 1 INTRODUCTION
CHAPTER 2 BASIC OPERATION
I.
FEATURES ..............................................1-1
II.
SPECIFICATIONS ...................................1-2
III.
NAMES OF PARTS .................................1-6
A. External view......................................1-6
B. Cross sectional diagram ....................1-8
IV.
OPERATION EXPLANATION................1-10
A. Control panel....................................1-10
B. Basic operation ................................1-13
C. Advanced features ...........................1-13
D. User mode .......................................1-14
V.
ROUTINE MAINTENANCE TO BE
CARRIED OUT BY THE USER .............1-32
VI.
SAFETY .................................................1-33
A.
Laser beam safety.......................1-33
B. Toner safety .....................................1-36
VII. COPYING PROCESS ............................1-37
A. Outline..............................................1-37
I.
BASIC OPERATION ................................2-1
A. Function configuration........................2-1
B. Copy operation overview ...................2-2
II.
ELECTRICAL CIRCUIT OVERVIEW .......2-3
III.
BASIC SEQUENCES...............................2-4
IV.
MAIN MOTOR..........................................2-5
V.
PRINCIPAL CIRCUIT PCB
INPUT/OUTPUT.......................................2-6
CHAPTER 3 EXPOSURE SYSTEM
CHAPTER 4 IMAGE PROCESSING SYSTEM
I.
OPERATION OVERVIEW........................3-1
A. Overview ............................................3-1
B. Exposure system sequence ...............3-2
II.
SCANNER DRIVE SYSTEM....................3-3
A. Document scanner motor...................3-3
B. Charging the magnification ratio ........3-4
C. Scanning lamp control .......................3-4
III.
DISASSEMBLY, ASSEMBLY ..................3-5
A. Scanning lamp ...................................3-6
B. Document scanning motor .................3-8
I.
OVERVIEW..............................................4-1
II.
ANALOG IMAGE PROCESSING.............4-2
A. Overview ............................................4-2
B. CCD/CCD drive circuit .......................4-2
C. A-D conversion circuit /
ABC circuit .........................................4-3
III.
DIGITAL IMAGE PROCESSING..............4-4
A. Overview ............................................4-4
B. Shading correction .............................4-5
C. Magnification ratio process ................4-7
D. Edge emphasis / smoothing
process ..............................................4-7
E. Logarithmic correction........................4-8
F. Half tone density processing ..............4-9
G. Binarisation ........................................4-9
IV.
DISASSEMBLY, ASSEMBLY ................4-10
A. CCD unit ..........................................4-11
COPYRIGHT © 1999 CANON INC. CANON GP160 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
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Содержание GP160
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