Brother HL-1040 Manual do Utilizador Página 47
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2.5.2 Exposure Stage
After the drum is positively charged, it is exposed to the light emitted from the laser unit.
Fig. 2-38
The area exposed to the laser beam is the image to be printed. The surface potential of
the exposed area is reduced, forming the electrostatic image to be printed.
1 Cycle of drum
Surface Potential (V)
+1150
+700
+400
+300
123
4
(a)
(b)
Time
1
2
3
4
Primary charging
Laser beam exposure and developing
(a) Unexposed area
( Non image area )
(b) Exposed area
( Image area )
Transfer the image to paper
Erase the residual potential
Drum
Sleeve
Fig. 2-39
Drum
Paper
Laser beam
f lens
Polygon mirror
Motor
Lens
Laser diode
Laser detector
Laser Beam
- APPENDICES 6
- 1. FEATURES 7
- 2. SPECIFICATIONS 9
- 69.8 to 229 mm 11
- 105 to 356mm (face down) 11
- Feeding direction 11
- 2.7 Effective Printing Area 13
- Printable area 13
- 3. SAFETY INFORMATION 15
- Fig. 1-1 16
- Fig. 1-2 16
- 1. ELECTRONICS 17
- Low-voltage power 18
- supply block 18
- High-voltage power 18
- supply block 18
- 1.2 Main PCB Block Diagram 20
- HL-820/1020 20
- Fig. 2-5 21
- Fig. 2-6 22
- Fig. 2-7 23
- Fig. 2-8 24
- CPU Receive Mode 26
- DMA Receive Mode 26
- (11) Engine control I/O 27
- Fig. 2-11 31
- Fig. 2-12 31
- Fig. 2-13 32
- Fig. 2-14 32
- Fig. 2-15 33
- Fig. 2-16 34
- Fig. 2-17 34
- Fig. 2-18 34
- Fig. 2-19 35
- Fig. 2-20 35
- Fig. 2-21 35
- Fig. 2-22 36
- 1.3.10 Engine I/O 37
- HL-820/1020/1040 37
- Fig. 2-24 38
- Fig. 2-25 39
- Fig. 2-26 39
- Fig. 2-27 40
- Fig. 2-28 41
- 2. MECHANICS 42
- 2.5.2 Exposure Stage 47
- 1. SAFETY PRECAUTIONS 50
- 2. DISASSEMBLY FLOW 51
- 3. DISASSEMBLY PROCEDURE 52
- 3.5 MP Sheet Feeder ASSY 54
- 3.7 Scanner Unit 57
- Caution: 59
- 3.10 Panel Sensor PCB ASSY 60
- (1) Remove the main shield 60
- 3.15 Drive Unit 64
- PR980109 64
- 4. PACKING 67
- 1. INTRODUCTION 68
- 2. CONSUMABLE PARTS 70
- 3. IMAGE DEFECTS 71
- I-1 Light 72
- I-2 Dark 73
- I-3 Completely blank 74
- I-4 All black 75
- I-5 Dirt on the back of paper 76
- (Fig.4-5) 77
- I-9 White vertical streaks 78
- I-10 Faulty registration 78
- I-11 Poor fixing 79
- I-12 Image distortion 79
- I-13 Faint print 80
- I-14 White spots 80
- I-15 Black spots 81
- I-16 Black band 82
- I-17 Gray background 83
- I-18 Hollow print 83
- I-20 Horizontal lines 84
- I-21 Light rain 85
- I-22 Ghost 85
- Fig. 4-7 87
- Feed shaft roller 87
- For feed roller 87
- 4. PAPER JAM 88
- P8-1 P8-4 Approx. 24V 89
- P8-2 P8-3 Approx. 5V 89
- M-3 Main motor unrotated 90
- M-4 No paper supplied 90
- M-7 BD failure 91
- M-8 Scanner failure 92
- F-1 Double feeding 93
- F-2 Wrinkles 93
- 6. INSPECTION MODE 94
- Fig. 4.8 95
- Fig. 4-9 96
- SERIAL I/F 100
- CODE UK4007000 101
- B48K312CIR 101
- CODE UK4041000 103
- B512001CIR 103
- CODE UK4010000 108
- B48K303CIR 108
- Low-voltage 109
- PS Circuit (110 - 120V) 109
- PS Circuit (220 - 240V) 110
- High-voltage PS CircuitNAME 113
- Drum Life 115
- 00000030303030202 115
- PARTS REFERENCE LIST 117
- B48K056 - 201A 118
- CONTENTS 119
- (Legend model only) 120
- T/I NO. PR98176 123
- MODEL: LT-24CL 133
- MODEL LT-24CL 54S-X06 137
- REGULATIONS 142
- CLASS 1LASER PRODUCT 143
- APPAREIL Å LASER DE CLASSE 1 143
- LASER KLASSE 1 PRODUKT 143
- SAFETY INSTRUCTIONS 144
- 1. PRODUCT OUTLINE 148
- 2. SPECIFICATIONS 149
- 3. INSTALLATION 150
- 3.2 Unpacking 151
- 3.3 Installation Procedures 152
- INSTALLATION 153
- 4. MAINTENANCE 157
- 5. DISASSEMBLY 158
- 5.2 Paper Size Sensor (PSU) 159
- 5.3 Paper Feeding Clutch 159
- DISASSEMBLY 160
- 6. CLEARING PAPER JAMS 161
- GENERAL DRAWING 162
- Quick Setup Guide 173
- To Use the Printer Safely 174
- Action 2: Place the printer 177
- Starter Sheet 178
- Troubleshooting 184
- Printing a Test Sample Page 186
- LAMPS AND SWITCH 195
- REPLACING THE TONER CARTRIDGE 198
- REPLACING THE DRUM UNIT 201
- ALARM INDICATIONS AT A GLANCE 204
- PRINTER SPECIFICATIONS 209
- Disconnect device 212
- For Finland and Sweden 212
- LUOKAN 1 LASERLAITE 212
- KLASS 1 LASER APPARAT 212
- Re-pack the printer 213
- HL-800/1000 Series 215
- TABLE OF CONTENTS 216
- Inside the Printer 218
- Shipment of the Printer 219
- CHAPTER 1 221
- INTRODUCTION 221
- ABOUT YOUR PRINTER 222
- Features 223
- Power Supply 227
- Environment 227
- CHAPTER 2 229
- PAPER HANDLING 229
- USER’S GUIDE 230
- CHAPTER 2 PAPER HANDLING 231
- Fig. 2-1 Fan the Paper and 231
- Straighten the Paper 231
- Fig. 2-2 Envelopes 232
- Fig. 2-3 Printable Area 232
- MULTI-PURPOSE SHEET FEEDER 233
- MANUAL FEED SLOT 237
- CHAPTER 3 240
- CONTROL PANEL 240
- CHAPTER 3 CONTROL PANEL 242
- CHAPTER 4 244
- CHAPTER 4 OPTIONS 246
- MAINTENANCE 253
- CHAPTER 5 253
- CHAPTER 5 MAINTENANCE 255
- Fig. 5-3 Inside the Printer 255
- Fig. 5-13 Inside the Printer 260
- CLEANING THE PRINTER 263
- Fig. 5-21 Inside the Printer 264
- Scanner Window 265
- RE-PACKING THE PRINTER 267
- CHAPTER 6 269
- TROUBLESHOOTING 269
- CHAPTER 6 TROUBLESHOOTING 271
- PAPER JAMS 273
- Q & A 276
- Print Quality 282
- CHAPTER 7 285
- APPENDIX 285
- CHAPTER 7 APPENDIX 287
- RESIDENT FONTS 291
- SYMBOL SETS/CHARACTER SETS 293
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