Gestetner A294 Service Manual page 66

SCANNING
Original Size
A4/A3 Version
A3
B4
F4 8
A4-L
B5-L
A5-L
A4-S
B5-S
A5-S
The original size data is taken by the main CPU when the DF position sensor is
activated. This is when the DF is positioned about 12 cm above the exposure
glass. At this time, only the sensor(s) underneath the original receive the reflected
light and switch on. The other sensor(s) are off. The main CPU recognizes the
original size from the on/off signals from the five sensors.
If the copy is made with the ADF open, the main CPU decides the original size
from the sensor outputs when the Start key is pressed.
The above table shows the outputs of the sensors for each original size. This
original size detection method eliminates the necessity for a pre-scan and
increases the machine productivity.
A294/A295
CÓPIA NÃO CONTROLADA
LT/DLT Version
11" x 17"
10" x 14"
" x 14" (8" x 13")
1/2
8 " x 11"
1/2
—
5 " x 8 "
1/2 1/2
11" x 8 "
1/2
—
8 " x 5 "
1/2 1/2
-L: Lengthwise -S: Sideways
2-16
CÓPIA NÃO CONTROLADA
Length
Width Sensor
Sensor
2 1 3
❍ ❍ ❍
❍ ❍ ❍
❍ ❍ ❍
✗ ❍ ❍
✗ ❍ ✗
✗ ✗ ✗
✗ ✗ ❍
✗ ✗ ❍
✗ ✗ ❍
❍
:High (Paper Present)
SP4301
Display
4 5
❍ ❍
00011111
❍ ✗
00011110
✗ ✗
00011100
✗ ✗
00001100
✗ ✗
00001000
✗ ✗
00000000
❍ ❍
00000111
❍ ✗
00000110
✗ ✗
00000100
✗
: Low
SM