Chapter 8
8-34
8.10 Detecting the Double-Feed
8.10.1 Detecting Double Feeding
0011-7360
iR7105 / iR7095 / iR7086
The machine uses the ultra-sonic wave sensor (for transmission, reception) located downstream of the registration roller to check for double feeding, and stops the
ongoing printing operation upon detection. Ultrasonic waves are often characterized as follows, and
may be used for the detection of double feeding regardless of the type of medium used (plain
paper, heavy paper, colored paper, transparency, etc.).
- propagation is subject to significant attenuation between different densities (e.g., air and paper).
- propagation is free of attenuation in regard to the color or thickness of the object being checked.
F-8-54
[1] Double feeding sensor (transmission)
[2] Double feeding sensor (reception)
[3] Registration roller
MEMO:
Some models (for sale in specific countries) may not come standard with this detection mechanism. Its use requires a Double Feeding Detection Kit (optional).
<Timing of Detection>
- interval extending several 100s of msec after the registration roller clutch goes on
<Sequence of Operation>
1) The mechanism is started.
2) The machine identifies double feeding.
3) The machine turns off the fixing motor as soon as the paper reaches the fixing nip area.
- The paper stops at the fixing nip area, with paper found downstream thereof discharged outside the machine.
- The control panel screen indicates the presence of a jam (0C00).
Delivery speed switching clutch (CL21)
Turns on in reversal delivery mode to speed up the rotation of the external delivery roller.
Reversing flapper solenoid (SL11)
Turns off in reversal delivery mode to lead paper to the reversing assembly.
Reversal motor (M11)
Moves paper to the reversing assembly.
Parts (notation)
Description
[1]
[2]
[3]
Содержание iR7086
Страница 1: ...Sep 7 2007 Service Manual iR7105 7095 7086 Series...
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Страница 26: ...Contents...
Страница 27: ...Chapter 1 Introduction...
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Страница 32: ...Chapter 1 1 2 Not all products are necessarily available in all sales areas...
Страница 55: ...Chapter 2 Installation...
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Страница 151: ...Chapter 3 Basic Operation...
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Страница 159: ...Chapter 4 Main Controller...
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Страница 183: ...Chapter 5 Original Exposure System...
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Страница 229: ...Chapter 6 Laser Exposure...
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Страница 238: ...Chapter 6 6 6 F 6 7 1 Laser light 2 Laser shutter 1 2 1 2 2 1...
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Страница 241: ...Chapter 7 Image Formation...
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Страница 295: ...Chapter 8 Pickup Feeding System...
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Страница 353: ...Chapter 9 Fixing System...
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Страница 379: ...Chapter 10 External and Controls...
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Страница 417: ...Chapter 11 MEAP...
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Страница 467: ...Chapter 12 RDS...
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Страница 479: ...Chapter 13 Maintenance and Inspection...
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Страница 497: ...Chapter 14 Standards and Adjustments...
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Страница 527: ...Chapter 15 Correcting Faulty Images...
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Страница 561: ...Chapter 16 Self Diagnosis...
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Страница 585: ...Chapter 17 Service Mode...
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Страница 689: ...Chapter 18 Upgrading...
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Страница 713: ...Chapter 18 18 22 formatting and download the system software once again...
Страница 726: ...Chapter 19 Service Tools...
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Страница 728: ...Contents Contents 19 1 Service Tools 19 1 19 1 1 Special Tools Table 19 1 19 1 2 Solvents Oils 19 2...
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Страница 734: ...Sep 7 2007...
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