Chapter 22-32.2 Laser Exposure2.2.1 Overview/Configuration2.2.1.1 Overview 0002-8624F-2-3T-2-3The machine's laser scanner assembly consists of the laser driver and the scanner motor, which are driven by signalscoming from the engine controller.The laser driver serves to turn on the laser diode according to the laser control signal and video signals from theengine controller.The laser beam moves thorough the collimator less and the cylindrical lens to reach the 4-facet mirror rotating at aspecific speed.The leaser beam reflected by the 4-facet mirror moves through the imaging lens arranged in front of the 4-facet mirrorand the reflecting mirror to reach and focus on the photosensitive drum.[1] Laser driver PCB [5] Imaging lends[2] BD sensor [6] Scanner motor[3] Reflecting mirror [7] 4-facet mirror[4] Photosensitive drum [8] Cylindrical lens[2][1][3][4][5][7] [6][8]
