Patent ID: 7328957

Claim:
A liquid discharging head comprising: a plurality of recording elements which are arranged in a predetermined direction and divided into a plurality of blocks, and each of which generates energy for discharging a liquid; a plurality of drive circuits for supplying currents to said recording elements and driving them; a first input circuit for inputting a series of data signals showing whether or not a predetermined recording element in a given block should be driven with respect to said plurality of blocks, and outputting the data signals to said plurality of blocks, respectively; a second input circuit for inputting one set of block signals encoded so as to indicate said predetermined recording element in the given block and outputting said one set of block signals to the given block; and a plurality of output circuits for outputting signals for driving said drive circuits in accordance with said data signals from said first input circuit and said block signals from said second input circuit, wherein said first input circuit is divided into a plurality of portions corresponding to said blocks, respectively, and each of the portions is arranged in a position adjacent to said recording element of said corresponding block and said drive circuit corresponding to said recording element, and wherein said second input circuit outputs both a non-inversion output and an inversion output of each of the encoded signals as said one set of block signals, and each of said output circuits has an AND circuit for calculating a logical product of the data signal derived from said first input circuit and a signal arbitrarily selected from said one set of block signals derived from said second input circuit, and outputs a respective driving signal for driving a respective recording element to a respective drive circuit based on a result of the calculation by said AND circuit.