Ricoh Mo-C1, Service Manual, Page: 197 / 1052

Other Precautions
1. The CIS unit has five separate elements, and sometimes image density may appear uneven at the
joints where these elements connect. When this problem occurs, try scanning in the Photo Mode.
The scanning level may be affected by the original floating away from the exposure glass during
scanning. This can also cause inconsistencies in the wavelengths of the CIS unit with color originals
and lead to slightly uneven density in the copied image. If you see white areas in dithered images,
switch the machine to the Photo Mode. If you see fine lines that appear as scratches, change the
setting of the density notch adjustment.
2. Because the CIS unit has 5 separate elements, pixels may become misaligned at the joints of these
elements.
• Normal paper original: 2 pixels
• Normal paper with curl: 3 to 4 pixels
• Thick original (1 mm): 3 to 6 pixels
• In order to compensate for the differences in Generation Copy Mode, try reversing the
direction of the original when you insert it, or swap the orientation between LEF and SEF.
3. Problems can occur with a pasted up original. When using a pasted up original, try Text Mode or
Photo Mode. Shadows can appear in copies because the CIS light source comes from one
direction where there are edges (steps) on the pasted up document.
4. After printing, if the machine is to remain idle for a long period, remove the paper rolls from the
machine and store them in their protective bags. Paper exposed to a high or low temperature or
high humidity can absorb or lose moisture causing it to curl and ripple, wrinkle, or fold.
General Precautions
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