Varying The Reproduction Ratio; Sequence Of Operations (Original Exposure System) - Canon GP215 Service Manual

3. OPERATIONS AND TIMING
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)
control panel
power switch ON
Scanner motor (M2)
Scanner home position
sensor (PS1)
Scanning lamp (FL1)
3–22
COPYRIGHT © 1996 CANON INC.
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Figure 3-203
CANON GP215/200 REV.0 JULY 1996 PRINTED IN JAPAN (IMPRIME AU JAPON)
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