Canon CLBR 460ps Service Manual page 96

CHAPTER 2
The beam is reflected from the six-faced prism mirror, then brought to a point of focus on the
photosensitive drum by the focusing lens located before the scanning mirror and the reflective
mirror.
As the scanning mirror rotates at a constant speed, the beam is scanned across the drum.
The drum also rotates at a constant speed. As it rotates, the laser beam successively scans
across its surface. Thus the laser beam builds up an image on the drum surface.
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