| 摘要 |
It is determined whether the radio output level of an RFID tag that has successfully communicated with an RFID reader-writer. A printing unit prints label data on the printing surface of any RFID label that has an RFID tag whose radio output level is equal to or higher than a reference level. The printing unit prints prescribed warding data on the printing surface of any RFID label that has an RFID tag whose radio output level is lower than the reference level.
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