Canon NP6317 Specifications Page 37
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CHAPTER 3 EXPOSURE SYSTEM
COPYRIGHT
©
1999 CANON INC. CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
3-1
I. BASIC OPERATION
A. Changing the Reproduction Ratio
The reproduction ratio across the drum is varied by changing the position of the lens and the
position of No. 4 and No. 5 mirrors. It is moved by the lens drive system. The reproduction ratio
around the drum is varied by changing the speed of the scanner. Figure 3-101 shows how the
position of the lens and mirror is varied to change the reproduction ratio across the drum.
Figure 3-101
The scanner drive system changes the reproduction ratio around the drum by varying the speed
at which mirror 1 moves relative to the peripheral speed of the drum. (The scanner consists of
mirror 1 and the scanning lamp.)
The mirror speed is higher than the drum peripheral speed for REDUCTION and lower for
ENLARGEMENT.
Note:
For DIRECT copying, the speed of the mirror is the same as the peripheral speed of the
drum.
100%
50%
200%
No. 4/5 mirror
Lens
- FY8-13G5-000 1
- COPYRIGHT © 1999 CANON INC 2
- Printed in Japan 2
- Imprimé au Japon 2
- INTRODUCTION 3
- CONTENTS 5
- CHAPTER 6 FIXING SYSTEM 7
- CHAPTER 8 INSTALLATION 7
- CHAPTER 10 TROUBLESHOOTING 8
- CHAPTER 1 9
- GENERAL DESCRIPTION 9
- I. FEATURES 11
- II. SPECIFICATIONS 12
- D. Others 13
- III. NAMES OF PARTS 15
- [10][4][2] 16
- Blank Page 17
- IV. OPERATION 18
- V. IMAGE FORMATION 21
- CHAPTER 2 23
- BASIC OPERATION 23
- CHAPTER 2 BASIC OPERATION 26
- Figure 2-102 27
- C. Inputs to DC Controller 28
- Figure 2-104 29
- D. DC Controller Outputs 30
- Figure 2-106 31
- Figure 2-107 32
- Scanner is set for 33
- HOME position 33
- Table 2-101b 34
- CHAPTER 3 35
- EXPOSURE SYSTEM 35
- I. BASIC OPERATION 37
- II. LENS DRIVE SYSTEM 38
- CHAPTER 3 EXPOSURE SYSTEM 39
- SOLENOID DRIVE 40
- Table 3-301 41
- C. Basic Scanner Operation 42
- Figure 3-403 46
- V. DISASSEMBLY AND ASSEMBLY 47
- B. Scanner Drive Assembly 50
- C. Exposure Assembly 53
- D. Blank Assembly 55
- E. No. 4/5 Mirror Mount 56
- CHAPTER 4 57
- IMAGE FORMATION SYSTEM 57
- I. PROCESSES 59
- Figure 4-102 60
- A. Outline 61
- B. Mechanism 62
- Photosensitive 64
- L) of light 66
- B. Operation 67
- AC driver/ 70
- DC power 70
- D. Adjustment 71
- A. Outlines 72
- B. Remaining Toner Sensor 72
- C. Torque Limiter 73
- VII.BLANKING 74
- Blank exposure 75
- Cut-offs SL4 76
- VIII. DISASSEMBLY AND 77
- B. Corona System 78
- C. Primary/Transfer Corona 80
- Assembly 80
- Transfer corona assembly 81
- (about 5 mm) 81
- (about 2 mm) 81
- Magnetic side seal 83
- Magnetic cylinder 83
- CHAPTER 5 89
- PICK-UP/FEEDING SYSTEM 89
- Pick-up roller 91
- Control ring 91
- Figure 5-102 92
- Figure 5-103 93
- C. Identifying the Paper Size 94
- Figure 5-105 96
- II. JAM DETECTION 97
- 1 sec 1 sec 98
- COPYRIGHT 100
- III. FEEDER SYSTEM 101
- Base plate 104
- B. Feeder Assembly 107
- CHAPTER 6 111
- FIXING SYSTEM 111
- I. BASIC OPERATIONS 113
- Figure 6-101 114
- Figure 6-102 115
- III. DISASSEMBLY AND 116
- ASSEMBLY 116
- CHAPTER 6 FIXING SYSTEM 117
- Paper guide 124
- CHAPTER 7 129
- I. POWER SUPPLY 131
- Figure 7-101 132
- II. DISASSEMBLY AND 133
- [1] [3] [4] 134
- [7] [6] [5] 134
- B. Control Panel 137
- C. Copyboard Cover 139
- CHAPTER 8 143
- INSTALLATION 143
- I. LOCATION 145
- A. Unpacking 146
- Dummy drum 147
- Drum unit 148
- Light-blocking 148
- C. Checking the Operation 149
- D. Adding Toner 150
- E. Checking the Image 151
- CHAPTER 8 INSTALLATION 152
- III. RELOCATING THE COPIER 153
- IV. INSTALLING THE 154
- CONTROL CARD-V 154
- CHAPTER 9 157
- MAINTENANCE AND SERVICING 157
- II. DURABLE PARTS 160
- CHAPTER 10 163
- TROUBLESHOOTING 163
- I. MAINTENANCE AND INSPECTION 165
- Figure 10-102 166
- 2.0 ±1.5 mm 167
- 10.0 ±1.5 mm 168
- CHAPTER 10 TROUBLESHOOTING 169
- Figure 10-209 171
- Pulley 2 172
- For reference: 174
- Figure 10-213 Top View 174
- Photosensitive drum 176
- 1.8 ±0.2 mm 176
- Lower transfer guide 176
- Transfer assembly roller 176
- Primary corona assembly 177
- (about 2 mm) 177
- (about 5 mm) 177
- Trasnfer corona assembly 177
- Approx. 10.5 mm 178
- Approx. 10 mm 178
- Registration roller 180
- Multifeeder 180
- B. Electrical 181
- When the setting is lowered 182
- When the setting is raised 182
- 4. Checking Photointerrupters 184
- III. IMAGE TROUBLESHOOTING 185
- 6. Fogging (overall) 192
- 14. Faulty fixing 196
- 18. Blurred image 198
- 21. Blank image 199
- 22. Black image 200
- IV. OPERATION TROUBLESHOOTING 201
- 12. AC power is not supplied 207
- 13. DC power is not supplied 208
- 14. Drum does not rotate 209
- 18. Scanner does not move 211
- Figure10-401 212
- 22. Lens does not move 215
- 23. Counter does not operate 215
- 219
- A. Paper Jams 220
- 1. Copy paper 224
- 2. Wrinkles 225
- ELECTRICAL PARTS 226
- Figure 10-702 227
- Figure 10-703 228
- Figure 10-704 229
- VIII. SERVICE MODE 230
- C. Guide to Service Mode 231
- Table 10-802 232
- Table 10-803 232
- IX. SELF DIAGNOSIS 233
- APPENDIX 237
- A. GENERAL TIMING CHART 239
- Main motor (M1) 240
- Scanner cooling fan 240
- Pre-exposure lamp 240
- C. GENERAL CURCUIT DIAGRAM 243
- D. SOLVENTS AND OILS LIST 245
- This pubication is printed on 248
- 70% reprocessed paper 248
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