Riso RP-255, Technical Manual

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PRINT DRUM SECTION
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• Using your finger, press the print drum from underneath, and adjust the gap to approx. 0.3 mm.
• Set the same amount of gap at the front and rear.
[Checking after Adjustment]
• Run an actual print after the adjustment to check the left and right print density balance.
If the left and right print density balance is incorrect, the squeegee pressure must be readjusted.
Symptoms
• Incorrect left and right squeegee pressure causes unbalanced print density.
• If the squeegee pressure is too high (gap too small), more ink than is needed will be transferred onto
the print drum and may cause ink leakage.
• If the squeegee pressure is too low (gap too large), the print density will be reduced, and excess load
will be applied on the print drum and may shorten the life of the drum body.