Patent ID: 6683638
Filing Date: 2004-01-27
Classification: G06K

Abstract:
A print head comprising:a plurality of print units, wherein each of the print units includes a predetermined number of driven elements (38, 39, 40, 41, 42, 43, 44, 45) each having a first terminal and a second terminal; a plurality of first driving elements (26, 27, 28, 29), each of which is connected in common to the first terminals of a plurality of the driven elements selected in a first combination from the predetermined number of the driven elements (38, 39, 40, 41, 42, 43, 44, 45); a plurality of second driving elements (50, 51), each of which is connected in common the second terminals of a plurality of the driven elements selected in a second combination different from the first combination from the predetermined number of the driven elements (38, 39, 40, 41, 42, 43, 44, 45); compensation data memories (14 to 21) in a one-to-one correspondence with the predetermined number of the driven elements (38, 39, 40, 41, 42, 43, 44, 45), each of which stores compensation data specifying a compensation value for adjusting energy to be supplied to a corresponding driven element; and multiplexers (22, 23, 24, 25,) in a one-to-one correspondence with the plurality of the first driving elements (26, 27, 28, 29), each of which selects one of a plurality of the compensation data memories corresponding to a plurality of the driven elements connected in common to a corresponding first driving element, and outputting compensation data stored in the selected compensation data memory to the corresponding first driving element.