Patent ID: 7370921

Claim:
A recording apparatus comprising: a recording head unit having a plurality of actuators and operable to perform a dot recording operation using a plurality of recording materials that are ejected by activation of said actuators; a main circuit operable to output a plurality of drive waveform signal sets, each of which includes drive waveform signals having respective waveforms different from each other, and each of which controls ejection of a corresponding one of the recording materials; and a head driver unit operable to receive each of said drive waveform signal sets outputted from said main circuit, generate a drive signal based on one of said drive waveform signals that is selected from among each of the received drive waveform signal sets, and supply the generated drive signal to each of said plurality of actuators, wherein said recording apparatus is selectively switchable between a first recording mode in which the dot recording operation is performed by using one of the recording materials and a second recording mode in which the dot recording operation is performed by using the other of the recording materials, wherein said main circuit is connected to said head driver unit through a plurality of signal wires that transmit said drive waveform signals of said drive waveform signal sets from said main circuit to said head driver unit, and wherein said signal wires include at least one common signal wire each of which transmits one of said drive waveform signals of one of said drive waveform signal sets that controls ejection of said one of the recording materials used in said first recording mode, and also one of said drive waveform signals of one of said drive waveform signal sets that controls ejection of one of said other of the recording materials used in said second recording mode.