Patent ID: 8220891

Claim:
A liquid droplet jetting head comprising: a first terminal to which is inputted a clock signal representing a synchronization timing when serially inputting data; a second terminal to which are serially inputted liquid droplet jetting-related data of a first number of bits in synchronization with the clock signal inputted to the first terminal and to which are serially inputted control data of a second number of bits after the liquid droplet jetting-related data; a third terminal to which is inputted a pulse signal when input of the input data to the second terminal is completed; a first shift register that receives the liquid droplet jetting-related data of the first number of bits inputted to the second terminal; a first holding unit that has a data storage area at least equal to the first number of bits and retrieves the liquid droplet jetting-related data of the first number of bits from the first register at a timing when the pulse signal is inputted to the third terminal; a delay unit that delays the pulse signal inputted to the third terminal by an amount at least equal to the second number of bits in the clock signal; a second shift register that receives the control data of the second number of bits inputted to the second terminal; and a second holding unit that has a data storage area at least equal to the second number of bits and retrieves at least the control data of the second number of bits from the second register at a delayed timing after the delay unit delays the pulse signal inputted to the third terminal by an amount at least equal to the second number of bits.