Ricoh Pro C7200x Operating Instructions Manual page 23

Related Advanced Settings
page 45 "Skew detection"
Leading edge detection mechanism in more detail
When the paper passes through the registration gate, the CIS emits light and reads the amount of
light reflected, to detect the leading edge.
The sensor reading is 0V when there is no reflection (no paper detected) whereas a certain voltage
is detected when there is reflection.
Voltage is high voltage with high reflection from white paper whereas the voltage is low with low
reflection from dark/black paper.
Accordingly, the values of the CIS lighting mode and CIS light intensity are set in advance
according to the color of the media (white, color, black).
However, low voltage from low reflection may occasionally be falsely detected as jams. In such
case, increase the light intensity.
CIS
Registration gate
CIS output voltage
Related Advanced Settings
page 46 "Paper edge detection"
Double-feed detection mechanism
The double-feed detection [4] is purposed to prevent blank sheets from mixing with the prints, reducing
inspection time and increasing productivity.
Double-feed is detected by reading the amount of light permeating the sheet.
When detected, the machine alerts jam code J099.
5
CIS intensity is optimum and paper
4
edge is detected
3
Threshold value
2
1
CIS light intensity is too low
0
(cannot detect leading edge)
Paper Delivery
DZH216
21