2NP
2-1-9
2-1-4 Optical section
The optical section consists of the image scanner section for scanning and the laser scanner section for print-
ing.
(1) Image scanner section
The original image is illuminated by the exposure lamp (EL) and scanned by the CCD image sensor in the
CCD PWB (CCDPWB) via the three mirrors and ISU lens, the reflected light being converted to an electrical
signal.
If a document processor is used, the image scanner unit stops at the position of the DP contact glass and
scans sequentially one row of the image on the original in synchronization with the moving timing of the origi-
nal in the sub scan direction by driving the DP.
Figure 2-1-11 Scanner unit
Figure 2-1-12 Image scanner unit (ISU)
3
2
1
4
5
6
1. Contact glass
2. Original size indicator plate
3. DP contact glass
4. ISU frame
5. ISU motor (ISUM)
6. ISU wire
1
5
4
3
2
8
6
7
9
10
11
1. The first mirror frame
2. Exposure lamp (EL)
3. Exposure lens
4. Reflector
5. Mirror A
6. The second mirror frame
7. Mirror B
8. Mirror C
9. ISU lens
10. CCD PWB (CCDPWB)
11. ISU cover
Содержание TASKalfa 2551ci
Страница 1: ...SERVICE MANUAL Published in September 2016 842NP11A 2NPSM06A Rev A TASKalfa 2551ci ...
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Страница 259: ...2NP 1 3 162 U486 Details on the modes Figure 1 3 47 Item No Description ...
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Страница 496: ...2NP 2 1 21 Figure 2 1 25 Duplex conveying section block diagram EPWB DU_SW DU_CL_REM YC25 3 YC24 3 DUCL DUS ...
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Страница 544: ...2NP 2 3 37 2 3 5 IH PWB Figure 2 3 5 IH PWB silk screen diagram YC1 1 2 YC8 1 3 YC6 2 1 YC4 6 1 YC3 YC10 YC9 ...
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Страница 584: ...Installation Guide DP 770 B Document processor DP 772 Document processor Installation Guide ...
Страница 620: ...DP 773 Document processor Installation Guide ...
Страница 646: ...PF 791 500 x 2 Paper feeder Installation Guide ...
Страница 654: ...PF 810 3000 sheets deck Installation Guide ...
Страница 667: ...DF 770 D Document finisher Installation Guide ...
Страница 685: ...AK 740 Bridge unit Installation Guide ...
Страница 687: ...PH 7A C D Punch unit Installation Guide ...
Страница 708: ...DT 730 B Document tray Installation Guide ...
Страница 710: ...5 2013 5 302LC56750 01 H F G D D 6 4 3 7 E C D D M4 8 M4 8 M4 8 M4 8 ...
Страница 711: ...FAX System W B Installation Guide ...