2-9
2-9
2
2
Technology
Technology
Following is the combination of detection result and original size.
A/B: Original presence/absence detection result of 2 points (Refer to [2 point original detec-
tion at each detection position].).
Y: Output level has no change (refer to [Detection operation]).
-: Output level has change (refer to [Detection operation]).
Original size
Scanner unit detection position
Original size sensor 1
1
2
3
4
5
A
B
A
B
A
B
A
B
A
B
A3
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
B4
Y
Y
Y
Y
Y
Y
Y
Y
-
-
Y
A4R
Y
Y
Y
Y
Y
Y
-
-
-
-
Y
A4
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
-
B5
Y
Y
Y
Y
Y
Y
Y
Y
-
-
-
B5R
Y
Y
Y
Y
-
-
-
-
-
-
Y
A5
Y
Y
Y
Y
Y
Y
-
-
-
-
-
B6
Y
Y
Y
Y
-
-
-
-
-
-
-
A5R
Y
Y
-
-
-
-
-
-
-
-
-
None
-
-
-
-
-
-
-
-
-
-
-
Original size
Scanner unit detection position
Original size sensor 2
1
2
3
A
B
A
B
A
B
11” x 17”
Y
Y
Y
Y
Y
Y
Y
LGL
Y
Y
Y
Y
-
-
Y
LTRR
Y
Y
Y
Y
-
-
-
LTR
Y
Y
Y
Y
Y
Y
-
STMTR
Y
Y
-
-
-
-
-
STMT
Y
Y
Y
Y
-
-
-
Absent
-
-
-
-
-
-
-
To keep the high accuracy detection even though an original moves when the DADF is
closed, this machine has 2 types of controls.
a. 2 point original detection at each detection position
In main scanning direction, the machine determines whether the original is present or not
from the 2 points of CMOS output near the original detection position.
Near 4 mm
Near 13 mm
1A: additional point
of detection
Original size
border line
Original size
border line
1B: conventional point
if detection
Result
Judgment
A
B
Y
Y
Present
Y
-
Present
-
Y
Present
-
-
Absent
* Signal change with DADF Open to Close
Changed: -
Others: Y
The machine uses OR combinations of 2 points for identi
fi
cation.
Содержание L1
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Страница 11: ...2 2 2 Technology Technology Technology Basic configuration Controls ...
Страница 31: ...3 3 3 Periodic Service Periodic Service Periodic Servicing Periodic Servicing List ...
Страница 41: ...5 5 5 Adjustmnet Adjustmnet Adjustments Overview Adjustment Method ...
Страница 49: ...6 6 6 Installation Installation Installation Color Image Reader L1 ...
Страница 78: ...Service Tools General Circuit Diagram Appendix Appendix Appendix ...