Ricoh Beluga-C1 Training page 144

Beluga-C1/C1.5 Training
ADS (Auto Image Density Correction)
Contact Image Sensor (Center)
70 mm 70 mm
5 mm
Texture detection Area
The base white level is taken from the white platen plate
Slide 144
The base white level (absolute white) is taken from the white platen plate - auto
shading.
Then, every line, the machine checks the background and removes that from the
image.
The background is checked from a 140 mm wide strip in the middle of the
original.
This is not done for the 5 mm at the leading edge of the original.
144