Ricoh A-C4 - Laser Beam Pitch Change Mechanism

20 June 2005 LASER EXPOSURE
6-51
Detailed
Descriptions
6.6.4 LASER BEAM PITCH CHANGE MECHANISM
The LD positioning motor [A] moves the LD unit housing [B] up and down and
changes the position of L2 (L1 does not move).
Both LD unit positions are at fixed distances from the LD unit home position sensor
[C].
Usually, the LD unit moves directly to the proper position. However, when the
number of times that the resolution has changed reaches the value of SP2-109-5
(Auto Pitch Adjustment Interval), the LD unit moves to the home position, and this
re-calibrates the LD unit positioning mechanism.
B195D543.WMF
[A]
[B]
[C]