Ricoh C231 Service Manual page 434

SCANNER UNIT
6.3.2 SCANNER DRIVE
[E]
A: Scanner motor
B: Timing belt
C: Scanner wire
D: First scanner, E: Second scanner
Full size mode
During scanning, the first scanner speed is 20.32 mm/s.
The second scanner's speed is half the first scanner's speed.
Speed increases when the scanner returns.
Reduction/enlargement modes
First scanner speed equals the drum rotation speed divided by the magnification
ratio (0.5 to 2.0).
Varying the scanner speed changes the sub-scan image size.
Image processing on the MPU changes the main scan image size.
The return speed is the same as in full size mode.
C231/C237/C238
[D]
6-12
[C]
[B]
[A]
C238D051.WMF
SM