Laser Scanning Optical Path - Samsung SL-M4580FX Service Manual

2.7.2. Laser Scanning Optical path

The laser beam is reflected from the mirror [A] and passes through F-theta lens. And then its direction is changed by the
reflection mirror [C]. It is transferred to OPC.
The polygon motor speed is controlled by the main CPU.
The LD unit generating the laser beam has the dual beam laser diode with 780nm wavelength. It is controlled by the
LD drive IC.
Item
LD Unit
P/Motor speed
Process Speed
H/W interface
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Laser Diode : Dual Beam
•
Driving IC for Dual LD
•
32,055 rpm
271.40 mm/sec
LD Harness : 14 Pin FFC
•
P/Motor Harness : 5 Pin FFC
•
2. Product Specifications and Description
Specification
2-34