Canon NP6012 Service Manual page 89

J. Controlling the Side Blank
Exposure
1. Outline 2. Operation
image areas.
Rear side blank exposure lamp
Lens travel detecting shaft
Reflecting plate
Front side blank exposure lamp
Reflecting plate
(front)
Figure 3-330
Photosensitive drum
———— Non-image area (REDUCE)
A: position of the side blank exposure lamp at time of DIRECT/ENLARGE.
B : position of the side blank exposure lamp at time of REDUCE.
Figure 3-331