Patent ID: 7581805

Claim:
A recording head comprising: a first recording-head substrate and a second recording-head substrate, wherein each of the first and second recording-head substrates comprises: a recording element; a driving circuit driving the recording element; a temperature-detecting element measuring a temperature of the recording-head substrate, the temperature-detecting element outputting a voltage corresponding to temperature; a first detection circuit outputting the output voltage from the temperature-detecting element; a second detection circuit outputting the output voltage from the temperature-detecting element; a first output terminal coupled to the first detection circuit to output the first signal from the first detection circuit; and a second output terminal coupled to the second detection circuit to output the second signal from the second detection circuit; a first current supply; a second current supply; a first output pad coupled to the first current supply, the first output terminal of the first recording-head substrate, and the first output terminal of the second recording-head substrate; and a second output pad coupled to the second current supply, the second output terminal of the first recording-head substrate, and the second output terminal of the second recording-head substrate, wherein the first detection circuit has an output stage including an n-channel MOS transistor and outputs from a source of the n-channel MOS transistor, and wherein the second detection circuit has an output stage including a p-channel MOS transistor and outputs from a source of the p-channel MOS transistor.