Laser Scanning Optical Path - Samsung ML-451 Series Service Manual

2. Product Specifications and Description

2.2.8.2. Laser Scanning Optical Path

[A]
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.
This LSU is the common device for ML-451x series and ML–501x series. 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.
Mode ML-501x series
LD Unit Laser Diode : Dual Beam
Drive IC : for Dual Beam LD
LD PBA : 48/43ppm common use
P/Motor Speed 34,035 rpm
Process Speed 288.17 mm/sec
H/W interface LD Harness
P/Motor Harness : 5 Pin FFC
2-31
[D] [B]
OP C
: 14 Pin FFC
[C]
ML-451x series
Laser Diode : Dual Beam
Drive IC : for Dual Beam LD
LD PBA : 48/43ppm common use
30,476 rpm
258.03 mm/sec
LD Harness : 14 Pin FFC
P/Motor Harness : 5 Pin FFC
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