Citizen CMP-40 SERIES User Manual page 32

CAUTION
When using an external paper supply, set the printer 20 mm higher than the
ground. Then insert the paper correctly to the paper slot on the backside of
the printer and adjust the paper guide to fit the paper properly.
Recommendation
Please set apart the printer and paper at least twice of the paper length.
300 mm or more
20 mm or more
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