Samsung ProXpress M337x - LSU (Laser Scanning Unit)

2.ProductSpecications
2.2.4.4.LSU(LaserScanningUnit)
ItisthecorepartoftheLBPwhichswitchesfromthevideodatareceivedtothecontrollertotheelectrostaticlatentimage
ontheOPCdrumbycontrollinglaserbeam,exposingOPCdrum,andturningprincipleofpolygonmirror.TheOPCdrumis
turnedwiththepaperfeedingspeed.TheHSYNCsignaliscreatedwhenthelaserbeamfromLSUreachestheendofthe
polygonmirror,andthesignalissenttothecontroller.ThecontrollerdetectstheHSYNCsignaltoadjusttheverticallineof
theimageonpaper.Inotherwords,aftertheHSYNCsignalisdetected,theimagedataissenttotheLSUtoadjusttheleft
marginonpaper.Theonesideofthepolygonmirrorisonelineforscanning.
OPC Drum
Photo Diode
LD Driver circuit
Polygon Mirror
Polygon Motor
Motor Driver
Protector panel
LD (Laser Diode)
2-23Copyright©1995-2013SAMSUNG.Allrightsreserved.