Patent ID: 7686409

Claim:
A print head comprising: a regulator for producing second voltages higher than first voltages with which n-bit print data is fed in from outside; and m driver devices each including; n transistors for individually driving n heating elements; a data storage for storing the n-bit print data according to which the n transistors are turned on and off; n first level shifters for converting voltages of individual bits of the n-bit print data into the second voltages fed from the regulator and then outputting the second voltages to control electrodes of the n transistors; and a second level shifter for converting the print data from the second voltages to third voltages and then outputting the third voltages to the data storage of each of the m driver devices, wherein the regulator produces the third voltages and feeds the third voltages to the data storage of each of the m driver devices and to the second level shifter.