Citizen PMU2300III User Manual page 34

3.6.2 Precautions
- The PNE sensor may malfunction due to ambient light, so when you use
the PNE sensor, consider the installation of light shielding cover etc. for
preventing the ambient light from entering.
- The value of "external diameter of roll paper when it is detected by PNE
sensor" varies depending on the model and the type of roll paper, so use
it as a referential value.
- Do not use the PNE sensor other than that is made by our company. The
wrong use may damage the printer and negatively affect the human body
and peripheral equipment etc.
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