Patent ID: 8235481

Claim:
An inkjet recording head that can be mounted on a recording apparatus in a removable manner, and that is provided with an element substrate including a plurality of recording elements, a record data input end provided to transmit record data, a clock signal input end provided to transfer the record data, a drive signal input end provided to transmit a drive signal used to control driving the recording element, and a latch signal input end provided to transmit a signal used to latch the record data through a latch circuit, the inkjet recording head comprising: a first connection-state output circuit configured to externally transmit data of a state of a connection between the input ends and the recording apparatus based on signals transmitted from the recording apparatus via the input ends; a second connection-state output circuit to which the signals transmitted to the input ends are further transmitted in parallel with the first connection-state output circuit; a circuit to which both outputs from the first and second connection-state output circuits are transmitted; and a connection-state output end configured to externally transmit data of a result of a calculation performed through the circuit.