A supporting member includes a first supporting portion disposed on a first and second recording element substrate side, and a second supporting portion disposed on a side opposite to the first and second recording element substrate side with respect to the first supporting portion, the first supporting portion includes a first individual flow path for supplying liquid to a first recording element substrate, and a second individual flow path for supplying liquid to a second recording element substrate, and the second supporting portion includes a common flow path for supplying liquid to the first and second individual flow paths.

There is provided a method for controlling driving of an inkjet head including recording elements each including a nozzle and a driving element. The method includes a pulse width setting step. In this step, when a predetermined number of ink droplets ejected according to the predetermined number of driving pulses are made to land in the same pixel range, the predetermined number of first driving pulses each having a pulse width longer than a reference pulse width and the predetermined number of second driving pulses each having a pulse width shorter than the reference pulse width are combined for each of the recording elements and obtained combinations are respectively output to the recording elements. The predetermined number is two or more.

The invention is focusing on an inkjet printer as well as on a method for operating an inkjet printer, in which for at least one color at least two inks of the of the same color, but of varying color intensity are used, namely one ink of a lighter color intensity J.sub.h and an ink of a darker color intensity J.sub.d, where preferably to following applies: J.sub.d=2.sup.x*J.sub.h, with x for example being 2, 3 or 4. Then 2.sup.x is in these case 2.sup.2=4, or 2.sup.3=8, or 2.sup.4=16; whereat several ink drops are printed on one pixel on top of one another in quick succession, namely 0 . . . (2.sup.x1) ink drops so that with the darker ink 2.sup.x brightness levels can be accomplished, and with the lighter ink likewise 2.sup.x brightness levels, what from altogether 2.sup.x*2.sup.x=2.sup.2x different brightness levels are resulting; and where the individual drops unite together during their flight or do not come loose from each other, resulting in only one single color drop per pixel on the printing substrate.

A liquid ejecting apparatus is configured to eject liquid in response to a drive signal. The drive signal includes a first ejection pulse, a plurality of second ejection pulses, and a third ejection pulse. An ejection component of the first ejection pulse changes from a first potential to a reference potential and is temporally continuous with an interpulse component. Ejection components of the second and third ejection pulses change from the first potential to a second potential. The second ejection pulses include first vibration suppression components that change from the second potential to the reference potential after the ejection components. The third ejection pulse includes a second vibration suppression component that changes from the second potential to a third potential. The reference potential is a potential between the first potential and the second potential and between the second potential and the third potential.