Abstract: A reader/writer apparatus includes a roller to transport a sheet along a transport path. The sheet can labels disposed thereon spaced from each other. Each label includes a wireless tag, such as an RFID tag. A wireless tag reader has an antenna disposed on the transport path and reads identification data from wireless tags when the sheet is being transported. A processor operates to store the identification data read by wireless tag reader in association with a signal intensity of a response signal from the wireless tag and a position of the sheet on the transport path at the time of the reading of the wireless tag. A position of the sheet on the transport path for each wireless tag can be specified for writing data into the wireless tags based on peak signal intensity associated with identification data.

Abstract: In accordance with one embodiment, a printer comprises a plurality of communication interfaces; an operation interface setting section configured to set at least one of the plurality of communication interfaces as an operation interface and set the other communication interfaces as non-operation interfaces; a first command processing section configured to process a command received by the operation interface; and a second command processing section configured to execute the processing of the command in a case in which the command received by the non-operation interface is a command for requesting internal information of the printer, and not to execute the processing of the command in a case in which the command received by the non-operation interface is not a command for requesting the internal information.

Abstract: A wireless tag initialization device includes a reader and writer that weakens supply power to a first threshold value at which a wireless tag to be initialized is activated and other wireless tags are not activated, transmit a first command to invert a flag of the wireless tag to be initialized, increases the supply power to a second threshold value which is sufficient to write an initial value, and writes the initial value in the wireless tag with the inverted SL flag.

Abstract: In accordance with one embodiment, a printer comprises a plurality of communication interfaces; an operation interface setting section configured to set at least one of the plurality of communication interfaces as an operation interface and set the other communication interfaces as non-operation interfaces; a first command processing section configured to process a command received by the operation interface; and a second command processing section configured to execute the processing of the command in a case in which the command received by the non-operation interface is a command for requesting internal information of the printer, and not to execute the processing of the command in a case in which the command received by the non-operation interface is not a command for requesting the internal information.

Abstract: A wireless tag initialization device includes a reader and writer that weakens supply power to a first threshold value at which a wireless tag to be initialized is activated and other wireless tags are not activated, transmit a first command to invert a flag of the wireless tag to be initialized, increases the supply power to a second threshold value which is sufficient to write an initial value, and writes the initial value in the wireless tag with the inverted SL flag.

Abstract: A terminal antenna which is an antenna having an end section thereof terminated is provided, and the terminal antenna is electromagnetic coupled with an antenna of a wireless tag to be communicated with. In this manner, remaining electric power and excess electric power move to the terminal antenna and converted to thermal energy at a termination. As an embodiment, for example, a communication antenna is made facing in a non-contact manner part or whole of a closed flat plane or an open flat plane formed by a wireless tag antenna and electromagnetic coupled with the wireless tag antenna, and the terminal antenna is made facing in a non-contact manner part or whole of the closed flat plane or the open flat plane formed by the wireless tag antenna to be electromagnetic coupled with the wireless tag antenna.

Abstract: An antenna unit according to an embodiment of the invention includes an antenna that communicates with a RFID and a frequency switch that switches a frequency of a radio wave that the antenna transmits and receives, wherein the antenna includes a radiation plate that radiates a radio wave that communicates with the RFID, a ground plate that is disposed with a predetermined distance separated from the radiation plate and a distance switch that varies a distance between the ground plate and the radiation plate.

Abstract: A terminated antenna, which is an antenna being terminated at ends, is provided, and the terminated antenna is electromagnetically connected with an antenna of a wireless tag to communicate. Thus, the remaining power or redundant power therewithin is transferred to the terminated antenna and is transformed to thermal energy at the ends. According to an embodiment, a communication antenna may be faced, in a non-contact manner, against a part or all of a closed plane or open plane formed by a wireless tag antenna, be electromagnetically connected with the wireless tag antenna. A terminated antenna may be faced, in a non-contact manner, against a part or all of a closed plane or open plane formed by a wireless tag antenna and be electromagnetically connected with the wireless tag antenna.

Abstract: An RFID tag communication method in which an RFID tag row composed of the RFID tags arranged in a row is opposed to a transmitting/receiving antenna unit for communicating with the RFID tags, is configured to read IDs from the RFID tags. In the method, the direction in which the transmitting/receiving antenna unit transmits wireless waves is deviated from a maximum-gain direction of the RFID tags, while the RFID tag row remains opposed to the transmitting/receiving antenna unit. The IDs are thereby read from the RFID tags.

Abstract: A first power feed section is disposed in a specified position in the plane of a substantially rectangular planar antenna conductor so as to generate linearly-polarized waves that resonate in a specified direction in the plane of the planar antenna conductor. A second power feed section is disposed in a specified position in the plane of the planar antenna conductor so as to generate linearly-polarized waves that resonate in the direction substantially perpendicular to the specified direction. The first and second power feed sections are alternately supplied with high-frequency power from a high-frequency switching circuit.

Abstract: An antenna unit according to an embodiment of the invention includes an antenna that communicates with a RFID and a frequency switch that switches a frequency of a radio wave that the antenna transmits and receives, wherein the antenna includes a radiation plate that radiates a radio wave that communicates with the RFID, a ground plate that is disposed with a predetermined distance separated from the radiation plate and a distance switch that varies a distance between the ground plate and the radiation plate.

Abstract: A stepping motor remains subjected to a micro step driving sequence having a plurality of divided phases, until the rotation speed of the rotor increases to a specific speed after the start of rotation. When the speed increases to the specific speed, the motor is switched to 1-2 phase excitation rotating/driving.

Abstract: A drive controller of the N-phase stepping motor includes a signal generator for generating M pulse signals at such an interval that the stepping motor can be driven in response to the pulse signals so as to rotate the stepping motor through an M step angle in one direction, and a driver for determining an exciting phase which is one step ahead of the current exciting phase as a next exciting phase in response to the pulse signal generated from the signal generator and exciting the stepping motor set in the thus determined exciting phase. In the drive controller, the signal generator generates pulse signals as a pulse signal group at such an interval that the stepping motor cannot respond to the pulse signals and repeatedly generates the pulse signal group by M times at such an interval that the stepping motor can be driven in response thereto so as to rotate the stepping motor in a reverse direction.