95.08.23.11.29
Color LaserWriter 12/600 PS Basics & Theory 1–38
Scanner System
Outline The scanning mirror is a critical part in the scanner unit. It is mounted
on the scanner motor shaft and rotates with the scanner motor. The
rotation of the scanner motor is controlled by the scanner driver, so that
the laser beam reflected by the scanning mirror scans across the photo-
sensitive drum at a constant speed. When the scanner motor drive signal
(
/SCNON) and the scanner clock signal (SCNCLK) are sent to the
scanner driver by the DC controller, the scanner driver rotates the
scanner motor.
Laser/Scanner Assembly
/SCNRDY
/SCNON
/SCNCLK
Scanner
Unit
Scanner
Mirror
Motor
DC
Controller
Board
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