Gestetner B147, Service Manual

Page: 481 / 1081

SCANNING
SM 6-23 B147/B149/B190
Detailed
Des
cription
s
Original Size Length Sensor
Width
Sensor
Metric
version
Inch version L3 L2 L1 W2 W1
SP4-301
display
A3 11" x 17" O O O O O 132
B4 10" x 14" O O O X O 141
F4 8.5" x 14" (8" x 13") O O O X X 165
A4-L 8.5" x 11" X O O X X 133
B5-L X X O X X 142
A4-S 11" x 8.5" X X X O O 5
B5-S X X X X O 14
A5-L, A5-S 5.5" x 8.5", 8.5" x 5.5" X X X X X 128
NOTE: L: Lengthwise, S: Sideways, O: Paper present, X: Paper not present
For other combinations, “Cannot detect original size.” will be indicated on the
operation panel display.
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's productivity.
However, if the by-pass tray is used, note that the machine assumes that the copy
paper is lengthwise (L). For example, if A4 sideways paper is placed on the by-
pass tray, the machine assumes it is A3 paper and scans a full A3 area,
disregarding the original size sensors.
Original size detection using the ARDF is described in the manual for the ARDF.
6.3.4 ANTI-CONDENSATION HEATER
The anti-condensation heater is available as an optional unit. The anti-
condensation heater prevents condensation on the mirrors, which may occur when
the scanner unit is, for example, carried from a cold room to a warm room. Such
condensation can cause abnormal images.