Canon F1 Service Manual page 33

2
Technology > Controls > Reader > Original size detection
● Original size detection position
In main scanning direction, the machine moves the scanner unit to the following position in
reference to the original position and measures the reading sensor level of each detection
position. In sub scanning direction, original size is identified by the following sensors.
0 mm
Original
push-on
20 mm
position
30.0 mm
146.0 mm
169.0 mm
B6
178.0 mm
197.0 mm
A5
206.0 mm
244.0 mm
B5
253.0 mm
264.0 mm
16K
267.0 mm
284.0 mm
293.0 mm
Scanner unit
original detection
position
2 Technology > Controls > Reader > Original size detection
239.5 mm
Original
size sensor 1 (CF1)
A5-R
B5-R
A4-R
B4
8K
A4
0 mm
Original
push-on
20 mm
position
30.0 mm
126.7 mm
135.7 mm
211.9 mm
266.4 mm
275.4 mm
A3
Scanner unit
original detection
position
F-2-42
311 mm
Original
size sensor 2 (CF2)
STMT-R
STMT LETTER_R LEGAL
LETTER
2-20
LEDGER
F-2-43
2-20