Printer, printer control method of printer and non-transitory computer-readable medium

A printer configured to print on a print medium having an RFID, the printer comprising:

• a communication unit configured to communicate with the RFID;
• and
• a controller configured to attempt communication between the RFID and the communication unit, wherein the controller is configured to switch, based on a selection by a user, between:
• a first mode, in which the controller:
• attempts the communication at a first plurality of relative positions between the RFID and the communication unit and determines a radio wave strength at first relative positions at which the communication is successful, and
• identifies an optimum communication position based on the radio wave strength at first relative positions at which the communication is successful, and
• a second mode, in which the controller:
• attempts the communication at a second plurality of relative positions between the RFID and the communication unit and determines a radio wave strength at second relative positions at which the communication is successful, wherein a quantity of the second plurality of relative positions is greater than a quantity of the first plurality of relative positions;
• and
• identifies an optimum communication position based on the radio wave strength at second relative positions at which the communication is successful.

A non-transitory computer readable medium storing having instructions stored thereon that, upon execution of a processor of a computer of a printer configured to print on a printing medium having an RFID, cause the processor to:

• attempt communication between the RFID and a communication unit configured to communicate with the RFID, while a relative position between the RFID and the communication unit is adjusted;
• and
• operate in a first mode or a second mode, wherein:
• in the first mode the processor:
• attempts the communication at a first plurality of relative positions between the RFID and the communication unit and determines a radio wave strength at first relative positions at which the communication is successful, the first plurality of relative positions being separated by a first interval, and
• identifies an optimum communication position based on the radio wave strength at first relative positions at which the communication is successful, and
• in the second mode the processor:
• attempts the communication at a second plurality of relative positions between the RFID and the communication unit and determines a radio wave strength at second relative positions at which the communication is successful, the second plurality of relative positions being separated by a second interval smaller than the first interval, and
• identifies an optimum communication position based on the radio wave strength at second relative positions at which the communication is successful.

A non-transitory computer readable medium storing having instructions stored thereon that, upon execution of a processor of a computer of a printer configured to print on a printing medium having an RFID, cause the processor to:

• attempt communication between the RFID and a communication unit configured to communicate with the RFID, while a relative position between the RFID and the communication unit is adjusted, and
• operate in a first mode or a second mode, wherein:
• in the first mode the processor:
• attempts the communication at a first plurality of relative positions between the RFID and the communication unit and determine a radio wave strength at first relative positions at which the communication is successful, and
• identifies an optimum communication position based on the radio wave strength at first relative positions at which the communication is successful, and
• in the second mode the processor:
• attempts the communication at a second plurality of relative positions between the RFID and the communication unit and determine a radio wave strength at second relative positions at which the communication is successful, wherein a quantity of the second plurality of relative positions is greater than a quantity of the first plurality of relative positions;
• and
• identifies an optimum communication position based on the radio wave strength at second relative positions at which the communication is successful.

A control method of a printer configured to print on a print medium having an RFID, the printer comprising:

• a communication unit configured to communicate with the RFID;
• and
• a controller configured to attempt communication between the RFID and the communication unit while a relative position between the RFID and the communication unit is adjusted, the method comprises:
• a first mode, in which the controller:
• attempts the communication at a first plurality of relative positions between the RFID and the communication unit, the first plurality of relative positions being separated by a first interval, and
• identifies an optimum communication position between the RFID and the communication unit based on a radio wave strength obtained from the RFID, or
• a second mode, in which the controller:
• attempts the communication at a second plurality of relative positions between the RFID and the communication unit, the second plurality of relative positions being separated by a second interval smaller than the first interval, and
• identifies an optimum communication position between the RFID and the communication unit based on the radio wave strength obtained from the RFID, according to a previously given instruction as to which of the first mode and the second mode is to be performed.