Ricoh Pro C9200 Operating Instructions Manual page 21

The sensor reading is 0V when there is no reflection (no paper detected) whereas a certain voltage
is detected when there is reflection.
High voltage is detected when the reflection is high; white paper, whereas low voltage is detected
when the reflection is low; dark/black paper.
The CIS mode and its light intensity are set according to the color of the media (color, black).
However, low voltage from low reflection may occasionally be falsely detected as jams. In such
case, increase the light intensity.
Related Advanced Settings
page 41 "Paper edge detection"
Double-feed detection mechanism
Double-feed detection prevents unwanted blank sheets from mixing in the job to minimize inspection
time for high productivity.
Double-feeds are detected by reading the difference in the ultrasonic wave lengths between one sheet
and two or more sheets. The function also works for colored media and transparencies.
When detected, the machine alerts jam code J099.
Related Advanced Settings
page 40 "Double feed detection"
Sub scan registration mechanism
After correcting the main scan registration, the sheet passes through the transfer timing roller [2] and the
transfer timing sensor [1] detects the leading edge of the sheet.
The rotation speed of the transfer timing roller [2] is adjusted according to the timing the leading edge is
detected, to deliver the paper for the belt-to-paper transfer process at the perfect timing.
If the leading edge is detected at a timing that exceeds the adjustment range (+/-4.0mm), the system
alerts J080 and stops.
Paper Delivery
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