Patent ID: 7959243

Claim:
A printhead comprising: a circuit that controls driving of a plurality of print elements with a plurality of signals including a clock signal and a heat enable signal; and an input circuit that has a first input pad for inputting a first signal obtained by combining a first clock signal and the heat enable signal, a second input pad for inputting a second signal obtained by combining the heat enable signal and a second clock signal whose phase is opposite to the phase of the first clock signal, a first generating circuit for generating the clock signal and outputting the clock signal for the circuit, and a second generating circuit for generating the heat enable signal and outputting the heat enable signal for the circuit, wherein the first generating circuit includes a differential circuit that inputs the first signal and the second signal, and wherein the second generating circuit includes a first resistor and a second resistor, the first resistor and the second resistor are connected in series between the first input pad and the second input pad, and the heat enable signal is generated at connection of the first resistor and the second resistor.