A circuit element which ensures an operation of a driving IC chip and a recording element, is mounted between a power supply and the driving IC chip of a flexible flat cable. Since the circuit element is arranged so as to avoid a bending portion of the flexible flat cable, even in a case of mounting the circuit element near the driving IC chip, it is possible to prevent the circuit elements from being peeled off, and to let the driving IC chip and the heat sink make a close contact assuredly.