Wireless tag writing device and wireless tag writing method

A wireless tag writing device, which writes predetermined information to wireless tags respectively formed on a plurality of label papers attached to a label mount while conveying the wireless tags, comprising:

• a setting module configured to set a conveyance pitch for conveyance of the label mount based on information including an arrangement state of the plurality of label papers attached to the label mount;
• a calibration module configured to convey the label mount by the conveyance pitch set by the setting module and to determine a writing position of information to the wireless tags, a wireless output value at the time of writing the information, and a threshold value for discriminating between a target response signal from a wireless tag which is a writing target for the wireless output value and a non-target response signal from a wireless tag which is not the writing target;
• and
• a writing module configured to write the information at the writing position determined by the calibration module according to the wireless output value determined by the calibration module.