B. Varying the Reproduction Ratio
The reproduction ratio in the main scanning direction (drum axis) is changed by skipping (reduction)
image signals when writing into line memory or reading a multiple number of times (enlargement) when
reading from the line memory.
The reproduction ratio in the sub scanning direction, on the other hand, is changed by moving the mir-
ror mount faster (reduction) or slower (enlargement).
C. Sequence of Operations (original exposure system)
Figure 3-203
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