Previous
A Ricoh original technology is applied to separately control skew correction and main scan registration, to achieve high accuracy in front-to-back registration.
After detection of the paper end by the CIS [2], the registration roller shifts from the area 5 mm ahead of the paper edge to the area 5 mm before the transfer timing roller [1] to adjust the main scan registration. The shifting is done by moving the rotary gate [3] in the main scan direction.
*Contact Image Sensor
Related Advanced Settings
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.
Related Advanced Settings
