3. Identifying the Size of Originals
Based on combinations of the states of the original size sensors, the DC controller
circuit identifies the size of each original as shown in Table 3-401 and Table 3-402.
• OFF
The output of the sensor when the copyboard cover is brought down to 15°
through 30° and the output 15 sec thereafter are the same (detecting an
original).
• ON
The output of the sensor when the copyboard cover is brought down to 15°
through 30° and the level when it is fully closed are different (detecting no
original).
Table 3-401
Table 3-402
Original size sensor
Original size
PS21
PS22
PS23
PS24
A3
ON
ON
ON
ON
B4
ON
OFF
ON
ON
A4R
OFF
OFF
ON
ON
A4
ON
ON
OFF
OFF
B5
ON
OFF
OFF
OFF
B5R
OFF
OFF
ON
OFF
NO
OFF
OFF
OFF
OFF
ON: represents the presence of a original
OFF: represents the absence of a original
3-16
CHAPTER 3 EXPOSURE SYSTEM
COPYRIGHT © 1997 CANON INC. CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
Original size sensor
Original size
PS21
PS23
PS24
11”
×
17”
ON
ON
ON
LGL
OFF
ON
ON
LTRR
OFF
ON
OFF
LTR
ON
OFF
OFF
NO
OFF
OFF
OFF
ON: represents the presence of a original
OFF: represents the absence of a original
Содержание NP6330
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