Original Size Detection - Ricoh FT8680 Service Manual

ARDF

16.3 ORIGINAL SIZE DETECTION

[E]
U.S.A.
Size
HLT sideways,10
LT sideways
A4 sideways, F4 sideways
LG sideways, 15" x 11", 14" x 10"
DLT sideways
Europe
Size
A4 lengthwise, B5 sideways, 10" x 8", A5
LT sideways
A4 sideways
F, F4
A3, B4, LG sideways
The original width sensors detect paper width and the timing sensor [A]
detects the original length.
The original width sensors consist of four reflection-type photo sensors (SN2
[B], 3 [C], 4 [D], 5 [E]). The above table shows the determined paper size
depending on the sensor status.
While the registration sensor [F] is on, pulse generator pulses are counted to
measure original copy length in the direction of travel. In this way, the original
width sensor data is combined with the original length data and the paper
size is determined.
[D]
[C]
[B]
Sensor
" x 8", LT lengthwise
1/2
Sensor
[F]
SN2 SN3
O
O O
O O
O O
SN2 SN3
O
O O
O O
O O
2-112
31 July 1995
[A]
A171D658.img
SN4 SN5
O
O O
SN4 SN5
O
O O