Patent ID: 7438372

Claim:
A drive circuit of a driver device for a recording head of a recording apparatus which has a main body connected, via a signal cable, to the drive circuit that is movable together with the recording head relative to the main body, such that the drive circuit receives a print data signal from the main body through the signal cable, so as to drive each of a plurality of recording elements of the recording head in accordance with the print data signal, comprising: the print data signal including a selecting signal for selecting one of a plurality of waveform signals representing respective recording modes, and a non-selecting signal, such that both of the selecting signal and the non-selecting signal are transmitted to the drive circuit through at least one print-data signal line included in the signal cable, each of the at least one print-data signal line being common to the selecting signal and the non-selecting signal; an outputting portion which outputs the selecting signal included in the print data signal, with the selecting signal associated with the corresponding recording element; and a non-selecting signal utilizing portion which uses the non-selecting signal for a purpose other than the selection of one of the waveform signals.