Laser Unit; Overview - Ricoh B132 Service Manual

6.7 LASER UNIT

6.7.1 OVERVIEW

4 5
Y
3
2
1
Y
18
Y
17
NOTE: LSDB = Laser Synchronization Detection Board
1. WTL Lens (C)
2. WTL Lens (Y)
3. Dual-Layer fθ Lens (C, Y)
4. LSDB (Y Front)
5. LSDB (C Front)
6. LD Unit (C)
7. LD Unit (Y)
8. LD Unit (K)
9. LD Unit (M)
LD Units
Line Scan Mechanism
Image Position Correction
SM
7
6
Y K
C
C
C
C
10. LSDB (M Rear)
11. LSDB (K Rear)
12. Dual-Layer fθ Lens (M, K)
13. WTL Lens (M)
14. WTL Lens (K)
15. LSDB (K Front)
16. LSDB (M Front)
17. LSDB (C Rear)
18. LSDB (Y Rear)
4, One two-beam LD unit for each color (C, M,
Y, K)
Main scanning with polygon mirror
MUSIC sensor patterns read from ITB with
MUSIC sensors
6-43
LASER UNIT
8
9
10
M
M
K
M
K
M
16
B132D002.WMF
11
12
13
14
15
K
B132/B200