Abstract: A sales data processing device includes at least one processor that executes a program stored in memory. The processor registers sales, and tries to transmit sales registration information of a registered transaction to an external terminal via a communicator based on timing of closing operation for the transaction. The processor determines whether the sales registration information of the transaction is successfully transmitted. In a case where the processor determines that transmission of the sales registration information of the transaction has failed, the processor tries again to transmit the sales registration information of the transaction to the external terminal via the communicator based on timing of closing operation of a subsequent transaction.

Abstract: A thermal printer includes a thermal head in which a plurality of heating elements are arranged in a line, and a processor that executes a printing process of energizing the thermal head successively a predetermined number of times so at to print a printing data by causing a predetermined voltage to be applied to the thermal head the predetermined number of times in accordance with and in synchronization with strobe pulses in a strobe signal, a strobe width of each strobe pulse in the strobe signal defining a duration during which the thermal head is being applied with the predetermined voltage, wherein among the strobe pulses for the predetermined number of times of energizing the thermal head, a strobe width of at least one predetermined strobe pulse is set to be always shorter than a strobe width of another predetermined one of the strobe pulses.

Abstract: A thermal printer includes a thermal head in which a plurality of heating elements are arranged in a line, and a processor that executes a printing process of energizing the thermal head successively a predetermined number of times so at to print a printing data by causing a predetermined voltage to be applied to the thermal head the predetermined number of times in accordance with and in synchronization with strobe pulses in a strobe signal, a strobe width of each strobe pulse in the strobe signal defining a duration during which the thermal head is being applied with the predetermined voltage, wherein among the strobe pulses for the predetermined number of times of energizing the thermal head, a strobe width of at least one predetermined strobe pulse is set to be always shorter than a strobe width of another predetermined one of the strobe pulses.

Abstract: In a nameplate apparatus incorporating a communication unit therein, the communication unit is formed in a thin film shape and transmits a coded code specific to the nameplate apparatus. On a front surface of this thin-film shaped communication unit, a display plate is mounted so as to display information such as a name, whereas on a rear surface of the communication unit, a holding member is provided so as to detachably secure the communication unit to a user's clothing or the like. In a data processing apparatus, after the coded code transmitted from the communication unit is determined to be coincident with a predetermined identification code, the data processing apparatus is brought into an operable condition.