Ink jet head having ejection outlets with different opening angles and which drives ejection energy generating elements in blocks

摘要

An ink jet head for effecting recording by selectively ejecting ink onto a recording material, includes an array of ejection outlets; a plurality of ink flow paths each having an ejection energy generating element for ejecting the ink, the ink flow paths being in fluid communication with ejection outlets; a common liquid chamber for supplying the ink to the a plurality of ink flow paths; wherein the plurality of the ejection energy generating elements are grouped into blocks of a predetermined number of ejection energy generating elements, and actuation timing for the ejection energy generating elements is deviated for each blocks; wherein the ejection outlets have different opening angles for respective blocks in a direction of reducing deviation of recording positions between respective blocks.