Original Size Length Sensor Width Sensor
A4/A3 version LT/DLT version
12Op345
A3 11" x 17" OOOOOO
— (11" x 15") O O X O O O
B4 10" x 14" OOOOOX
F4 8
1/2
" x 14" O O O O X X
F 8" X 13" O O O O X X
A4–L 8
1/2
" x 11" X O O O X X
B5–L — X O O X X X
A5–L 5
1/2
" x 8
1/2
" XXOXXX
A4–S 11" x 8
1/2
" XXOOOO
B5–S — X X O O O X
A5–S 8
1/2
" x 5
1/2
"XXOOXX
The original size data is taken by the main CPU when the platen position
sensor [A] is activated. This is when the platen is positioned about 15 cm
above the exposure glass. At this time, only the sensor(s) located
underneath the original receive the reflected light and switch on. The other
sensor(s) are off. The main CPU can recognize the original size from the
on/off signals from the five sensors.
If the copy is made with the platen open, the main CPU decides the original
size only from the sensor outputs when the Print key is pressed.
The above table shows the outputs of the sensors for each original size. The
third length sensor (shown as "Op") is the optional length sensor for
detecting 11" x 15" originals in North American models. (See FSM page 3-23)
This original size detection method eliminates the necessity for a pre-scan
and increases the machine’s productivity.
Original size detection using the ARDF is described in the manual for the
ARDF.
[A]
Note:
–L= Lengthwise, –S = Sideways, O = High (Paper Present), X = Low
A156/A160/A162 2-48 STM
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