Laser Synchronization; Specifications - Ricoh G157 Service Manual

OPTICAL HOUSING UNIT

6.4.2 LASER SYNCHRONIZATION

[A]
[B]
[C]
[D]
The synchronization detector [F] is on the right side of the optics unit. When
emitted from the LD unit [C], the laser travels as follows: cylinder lens [D] →
polygon mirror [G] → F-θ lens [E] → first mirror [A] → synchronization mirror [B] →
synchronization detector [F].

6.4.3 SPECIFICATIONS

The table lists some specifications of the optical housing unit.
Rated output of laser diode
Laser beam wavelength
Scanning resolution
Scanning width
Number of rotations of polygon mirror (per minute)
Polygon mirror faces
G157 6-16
[E]
[F]
[G]
G157D915.WMFF
5 mW
Approx. 785 nm
600 dpi
314 mm
35,904 rpm
8
SM