2.3.3.3 LSU ( Laser scanning unit )
LSU consists of LD(Laser Diode) and polygon motor control part. For realizing Color Image, it is controlled
by 4 LDs. When the controller generates the printing image signal, LD will turn on and Polygon motor starts.
If the receiving part in LSU detect the beam , Hsync is generated. When the polygon motor is rotated with a
steady speed, it is time of LSU ready status for printing.
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