Laser Unit
D0CA/D0C9/D0C8/D0CB 7-42 SM
7.5.2 LASER SYNCHRONIZING SYSTEM
The LD unit has a synchronization detector at the left side of each unit (for the optical paths for
the K and M drums only). A laser beam coming from the LD Board [A] travels to the collimating
lens [B]
polygon motor (M5,M6) [C] lens (L1) [D] Mirror 1 [E] Mirror 2 Mirror
3
Drum.
When the beam is at the beginning of the line, the synchronization mirror [F] reflects it to the
synchronization lens. The synchronization detector [H] mounted on LD drive board
(PCB8)(PCB9) [I] detects the beam reflected.
Callout Item Callout Item
[A] LD Board [F] Synchronization Mirror
[B] Collimating Lens [G] Synchronization Lens
[C] Polygon Motor (M5,M6) [H] Synchronization Detector
[D] Lens (L1) [I] LD Drive Board (PCB8)(PCB9)
[E] Mirror 1 - -
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