Canon 1000 Service Manual page 107

The CLC1000 is equipped with a laser unit for each color (Y, M, C, Bk), each unit directing a laser beam
against its corresponding photosensitive drum. The polygon mirror consists of top and bottom blocks,
generating four channels of laser beams as shown in Figure 3-402.
Reflecting mirror for Bk
Laser unit for Bk
Since the positions of the laser units and the direction of rotation of the polygon mirror differ for M/Y and
C/Bk, the laser beam scans the photosensitive drums in the opposite directions as shown in Figure 3-403.
Bk drum
Front
COPYRIGHT © 2001 CANON INC.
Laser unit for C
Figure 3-402
C drum
M drum
Figure 3-403
CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
Polygon mirror
Laser unit for Y
Y drum
3. OPERATION AND TIMING
Laser unit for M
Reflecting mirror for Y
Rear
3-63