Canon GP200 Service Manual page 92

3. OPERATIONS AND TIMING
c. Reduced Image Composition
Reduced image composition mode may be
any of the following two:
q 2-on-1 mode, in which two originals are
reduced for copying on a single sheet of copy
paper.
w 4-on-1 mode, in which four originals are
reduced for copying on a single sheet of copy
paper.
Executing these modes requires control under
combination of reproduction ratio processing, shift
processing, and overlay processing.
In reproduction ratio processing, a reproduc-
tion ratio is computed based on the size of the
original and the size of the copy.
• Formula for Lengthwise Direction
a: copy paper length ÷ (original length × 2)
b: copy paper length ÷ original length
• Formula for Breadthwise Direction
c: copy paper width ÷ (original width × 2)
d: copy paper width ÷ original width
Mode Duplexing unit
2-on-1 (overlay)
2-on-1 (continuous) Not Required
2-on-1 (two-sided)
4-on-1 Not Required
3–38
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RDF
Required Not Required
Required
Required Required
Not Required
Table 3-303
CANON GP215/200 REV.0 JULY 1996 PRINTED IN JAPAN (IMPRIME AU JAPON)
If the reproduction ratio in lengthwise direction
and that in breadthwise direction are different, the
smaller of the two will be selected; however, the
reproduction ratio will be between 25% and
800%.
Shift processing and overlay processing are
controlled as explained in the next page. See
Table 3-303 to find out what modes are available
in relation to different combinations of the RDF
and the duplexing unit.
Lengthwise ratio Breadthwise ratio
b c
a d
a d
a c