COPYRIGHT © 2000 CANON INC. 2000 2000 2000 2000 CANON iR5000/iR6000 REV.0 JULY 2000CHAPTER 3 LASER EXPOSURE SYSTEM3-4 P2. Generating Sync Signals2.1 OutlineThe BD signal used to synchronize video signals for laser scanning direction is generatedby the BD PCB with reference to the laser beam reflected by the BD mirror, mounted alongthe path of the laser beam.The CCD/AP PCB reads image signals from the CCD, and sends them to the controllerunit. The controller unit performs image processing, and the signals are sent to the laserdriver PCB as video signals through the DC controller PCB; they are then sent to the laserunit as laser intensity control signals in sequence.F03-201-01 Construction of the Control System12-facet polygonmirrorLaser unitBD mirrorPhotosensitive drumBD PCBDownload Free Service Manual at http://printer1.blogspot.com
