Patent ID: 7679515

Claim:
A program stored in a medium readable by a computer for measuring an optimum feed amount to an RFID antenna from a print standby position of a printer which reads and writes data from/on an RFID tag by feeding a label or tag containing an RFID tag, and then prints on the label surface by feeding the label or tag in the reverse direction, comprising: feeding the label or the tag from the print standby position in a forward direction in increments of a fixed amount; performing a read test and a write test each time the label or the tag is fed by the fixed amount; returning the label or the tag to the print standby position when the feeding in the forward direction is completed; feeding the label or the tag from the print standby position in a reverse direction in increments of the fixed amount; performing the read test and the write test each time the label or the tag is fed by the fixed amount; and displaying results of the tests when the feeding in the reverse direction is completed.