Chapter 7
7-11
Transfer bias for cleaning: -2600 V
The transfer bias is used at time of image formation, while a voltage of a specific level is applied between sheets for cleaning of the transfer roller.
7.9.3 Cleaning
7.9.3.1 Transfer Roller Cleaning Mechanism
0006-6318
iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 / / / iR3530 /
The machine uses the transfer roller cleaning mechanism to return the toner sticking to the transfer roller back to the photosensitive drum by applying a cleaning
bias to the roller.
Once the toner reaches the drum, it is scraped by the photosensitive drum cleaning blade for collection in the waste toner box.
7.9.4 Separation Mechanism
7.9.4.1 Controlling the Static Eliminator Bias
0006-6001
iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 / / / iR3530 /
Static Eliminator Bias
1st side: -2300 V
2nd side: -3000 V
A DC bias is applied between sheets while an image is being formed. (It is applied until the ongoing job is over.)
7.10 Transfer Mechanism
7.10.1 Transfer Guide Bias
7.10.1.1 Transfer Guide Bias Control
0007-5295
iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 / / / iR3530 /
To prevent soiling of the transfer guide with toner or the photosensitive drum with toner images, the following transfer guide bias is applied to the transfer guide.
The surface of the transfer guide is covered with an insulating sheet.
Transfer guide bias
1st side: -570 V
2nd side: -740 V
7.11 Photosensitive Drum Cleaning
7.11.1 Outline
0006-6033
iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 / / / iR3530 /
The photosensitive drum cleaning mechanism uses the photosensitive drum cleaning blade to scrape off the residual toner left behind from transfer; the toner thus
collected is moved to the waste toner box.
7.11.2 Collection of Waste Toner
0006-6034
iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 / / / iR3530 /
The waste toner scraped off by the cleaning blade is moved by the waste toner feedscrew to the waste toner box found at the front of the machine. The waste toner
feedscrew is operated by the drive from the drum flange.
7.11.3 Checking the Waste Toner Box
0006-6036
iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 / / / iR3530 /
To prevent leakage of waste toner from the waste toner box or to prevent overloading the waste toner feedscrew, the machine is equipped with a waste toner detec-
tion mechanism. The waste toner box can hold about 2043 cc of toner, and the machine identifies the waste toner box as being full when there is about 1766 cc of
toner or when the toner comes to weigh about 1050 g.
When the weight of waste toner increases, the waste toner case itself lowers on its own, thus causing the machine to assume that the case has become full.
Содержание iR3570 Series
Страница 1: ...Jan 17 2007 Service Manual iR4570 3570 2870 2270 Series...
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Страница 27: ...Chapter 1 Introduction...
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Страница 71: ...Chapter 2 Installation...
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Страница 147: ...Chapter 3 Basic Operation...
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Страница 155: ...Chapter 4 Main Controller...
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Страница 187: ...Chapter 5 Original Exposure System...
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Страница 219: ...Chapter 6 Laser Exposure...
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Страница 231: ...Chapter 7 Image Formation...
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Страница 279: ...Chapter 7 7 43 F 7 241 2 Remove the screw 1 F 7 242 3 Detach the static eliminator 1 to the front F 7 243...
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Страница 281: ...Chapter 8 Pickup Feeding System...
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Страница 421: ...Chapter 10 External and Controls...
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Страница 437: ...Chapter 10 10 11 F 10 12 2 Remove the check mark from SNMP Status Enabled...
Страница 438: ...Chapter 10 10 12 F 10 13...
Страница 440: ...Chapter 10 10 14 F 10 15...
Страница 475: ...Chapter 11 MEAP...
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Страница 481: ...Chapter 12 Maintenance and Inspection...
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Страница 509: ...Chapter 13 Standards and Adjustments...
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Страница 521: ...Chapter 14 Correcting Faulty Images...
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Страница 537: ...Chapter 14 14 9 43mm s b Z x i j B iR4570_395 s u A B FM2 0287...
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Страница 585: ...Chapter 15 Self Diagnosis...
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Страница 623: ...Chapter 16 Service Mode...
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Страница 679: ...Chapter 17 Upgrading...
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Страница 712: ...Chapter 17 17 30 F 17 55 2 Select the data to download F 17 56 3 Click Start...
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Страница 715: ...Chapter 18 Service Tools...
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Страница 717: ...Contents Contents 18 1 Service Tools 18 1 18 1 1 Special Tools 18 1 18 1 2 Oils and Solvents 18 1...
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Страница 721: ...Jan 17 2007...
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