Ricoh D182, Обучение по обслуживанию

Страница: 61 / 124

61
OR-C2 Training
Slide 61
Scanner Unit

The machine uses a CCD for scanning.
1. Scanner HP sensor
2. DF exposure glass
3. 2nd scanner (2nd carriage)
4. Scanner lamp
5. 1st scanner (1st carriage)
6. Exposure glass
7. Scanner motor
8. Sensor board unit (SBU)
9. Lens Block
10. APS sensor
11. Scanner Anti-condensation Heater (Optional Unit)

The original on the exposure glass or ARDF exposure glass reflects the light
emitted from the scanner lamp. The reflected light goes to the CCD on the
sensor board by way of the 1st and 2nd scanners. The sensor board converts
the CCD analog signals into digital signals.

When the original is manually placed on the exposure glass, the scanner motor
pulls the 1st and 2nd scanners via mechanical linkage. The original is scanned
from left to right.

When the original is fed from the optional ARDF, it is automatically fed over the
ARDF exposure glass, and to the original exit. The 1st and 2nd scanners stay at
their home positions below the ARDF exposure glass.

The anti-condensation heater is available as an optional unit. It prevents
condensation on the mirrors. Condensation can occur when the scanner unit is,
for example, moved from a cold room to a warm room. Condensation can cause
abnormal images.