COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON iR105 REV.0 JULY 2001CHAPTER 2 NEW FUNCTIONS2-52T02-401-01Component DescriptionLaser semi-conductor Visible laser light (wave length: 675 nm; output: 7 mW), twin-laserexposureLaser scanner motor (M4) DC motor, 2-speed control; rotation speed: 44000 rpmPolygon mirror 8-faceBD mirror/BD PCB Used to detect laser beams.Laser driver PCB Used to control laser activation.Scanner motor driver PCB Used to control the rotation of the laser scanner motor.