Epson EPL-N2700 Specifications Page 69
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EPL-N2700 Revision A
Operating Principles Printer Mechanism Operating Principles 69
2.1.6.2 Charging Section
Before producing an electrostatic latent image on the surface of the PC
drum with a laser beam, the PC drum is charged by static electricity with
the rotating charge bush so that the surface of the PC drum is
negatively charged. The charging system uses the rotating charge
brush system. Since this charging system can apply charge directly to
the PC drum, charging is possible at a low voltage, producing negligible
amount of ozone.
The negative level of the surface of the PC drum will be reduced when a
laser beam is applied. (Negative voltage level reduces.)
NOTE: Note: For the laser beam emission, see Section 2.1.5 “Print
Head Unit (Exposure Section)”.
Figure 2-22. Charging Section Mechanism
2.1.6.3 Development Section
The development section feeds toner to the electrostatic latent image
on the surface of the PC drum to produce a visible toner image.
The toner in the toner hopper is agitated by the two agitator blades to
feed toner to the toner feed roller. Then, the toner is fed to the sleeve
roller which is negatively biased. Accordingly, the toner is negatively
charged by the sleeve roller. The toner regulating plates acts to regulate
the amount of toner fed to the sleeve roller. To regulate the toner, a
voltage lower than the sleeve roller is applied to the toner regulating
plates.
Since the toner is negatively charged by the sleeve roller, the toner will
stick to the electrostatic latent image where the negative voltage is
reduced. On the other hand, toner does not stick to the part where no
laser beam is applied since the part maintains the negatively charged
voltage with the charge brush.
Figure 2-23. Development Section
Laser beam
Charge Brush
PC Drum
Charge bias
Developer bias
Agitator Blade
Toner bias
Mirror
Seal bias
Toner Empty Sensor
Mirror/Window Cleaner
Toner Regulating Plate
PC Drum
Sleeve Roller
Bottom Seal
Toner Feed Roller
- 1
- PRECAUTIONS 3
- Safety Information 4
- Laser Beam 5
- Safety Component 5
- Warning/Caution Label 5
- Revision Status 7
- Contents 8
- Disassembly/Assembly 9
- Adjustment 9
- Maintenance 9
- Troubleshooting 9
- Appendix 10
- PRODUCT DESCRIPTION 11
- 1.1 Overview 12
- 1.2 Basic Specifications 13
- 1.2.2 Configuration 14
- 1.2.3 Engine Specifications 15
- 1.2.4 Paper Specifications 17
- 1.2.5 Process Specifications 20
- 1.2.6 Paper Specifications 20
- G uaranteed 21
- 4m m 4m m 21
- < Top View > 23
- 1.2.10 Safety Approval 26
- 1.2.11 Consumable Item 27
- 1.3.2 Parallel Interface 29
- 1.3.3 Serial Interface 29
- 1.3.4 Ethernet I/F 30
- 1.3.5 Type-B I/F 31
- 1.4 Panel Operation 32
- 1.4.2 Panel Settings 34
- Setting Menu 38
- <5-bin unit> 39
- <10-bin unit> 39
- 1.4.3 One-Touch Setting 41
- 1.4.4 Special Functions 41
- 1.4.5 Maintenance Mode 43
- 1.4.5.1 Engine Status Sheet 44
- 559 m m (D ) 48
- 534 m m (W ) 48
- 428 m m (H ) 48
- Top View 48
- Front View 48
- OPERATING PRINCIPLES 50
- (universal cassette) 52
- 2.1.2 Gear/Roller Location 53
- 2.1.3.1 Switches and Sensors 55
- 2.1.4 Paper Feeding Section 56
- Light is blocked: 57
- Output = H 57
- MP Cassette 57
- 2.1.4.2 Cassette 1 60
- 4108s031 65
- 2.1.6 Imaging Cartridge 68
- 2.1.6.2 Charging Section 69
- 2.1.6.3 Development Section 69
- 2.1.6.4 Transfer Section 71
- 2.1.6.5 Fusing Section 72
- 2.1.6.6 Paper Exit Section 74
- Cartridge 75
- 2.2.1 System Layout 76
- 2.2.1.2 Electrical Section 77
- TROUBLESHOOTING 79
- 3.1 Overview 80
- Troubleshooting Overview 81 81
- 3.1.1.2 Message Descriptions 82
- 3.1.2 Service-call Error 83
- Troubleshooting Overview 84 84
- 3.1.3 Adding on RAM 85
- 3.1.4 Troubleshooting 85
- Troubleshooting Overview 86 86
- DISASSEMBLY/ASSEMBLY 87
- W ARNING 88
- 4.1.3 Small Parts 89
- 4.2 Disassembly Procedure 91
- 4.2.1 ROM DIMM Removal 92
- 4.2.4 Transfer Section 95
- 4.2.5 Separating the Printer 99
- 4.2.6 Rear Cover Removal 100
- EPSON EPL-N2700 Rev. A 101
- 4.2.11 Top Cover Removal 102
- 4.2.17 Front Cover Removal 109
- 4.2.18 Control Panel Removal 109
- 4.2.21 Fusing Section 113
- 4.2.22 Drive Unit Removal 121
- ADJUSTMENT 133
- EPL-N2700 Revision A 134
- Adjustment 134 134
- MAINTENANCE 135
- 6.1 Overview 136
- Maintenance Overview 137 137
- APPENDIX 138
- 7.1 Connector Summary 139
- 7.2 Component Layout 141
- 7.3 Exploded Diagrams 142
- 7.3.2 Frames 144
- 7.3.3 Fussing Section (A) 146
- 7.3.4 Fusing Section (B) 148
- 7.3.5 Transport Section (A) 150
- 7.3.6 Transport Section (B) 152
- 7.3.7 Electrical Components 154
- 7.3.8 Paper Take-up Section 156
- 7.3.9 Drive Section 158
- 7.3.10 Paper Tray Unit 160
- 7.4 Circuit Diagrams 162
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