Laser Scanning Optical Path - Samsung MULTIXPRESS CLX-9251 Series Service Manual

2.7.2. Laser Scanning Optical path

The laser beam from the LSU is placed at intervals of 78mm for each color. All colors uses the same polygon motor for
oblique incidence.
F2 Lens [A] determines the slope of the primary scanning line and the image position of the secondary scanning
direction. This is adjusted at the factory. The primary scanning line slope by the machine difference is adjusted by skew
adjustment in the LSU
Reflecting mirrors [C], [D] on each color path adjust the curvature of primary scanning. This is adjusted at the factory.
The LSU has 2 types depending on printing speed. The difference between 2 types is shown in the table below.
Mode
LD Unit
P/Motor speed
Process speed
H/W interface
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20ppm
Laser Diode : Single Beam
driving IC : for Single LD
27,874 rpm
118 mm/sec
Interface with machine : 50
Pin
2. Product Specifications and Description
30ppm
Laser Diode : Single Beam
driving IC : for Single LD
34016 rpm
144 mm/sec
Interface with machine : 50
Pin
Remark
FFC cable
2-49