2WA/2NJ/2RK
3-58
(7) Optical section
The optical section consists of the image scanner section for scanning the original and the laser scanner sec-
tion to write the image.
(7-1) Image scanner section
The image on the original is exposed by the LED lamp and that reflection light is scanned by the CCD image
sensor on the CCD PWB via three mirrors and the ISU lens to change the electric signal.
The mirror frame A and B travel to scan on the optical rails on the front and rear of the machine to scan from
side to side. The speed of the mirror frame B is half the speed of the mirror frame A.
Figure 3-42
3 94 11 1513126
5 7 1086 142 1
1. Mirror frame A
2. Mirror frame B
3. LED mount
4. Scanner reflector
5. Mirror A
6. Mirror B
7. ISU lens
8. CCD PWB
9. LSU cover
10. Scanner wire drum
11. Contact glass
12. Slit glass
13. Original size indicator
14. Home position sensor
15. Original detection switch
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