Liquid ejection head, liquid ejection apparatus and inkjet printing apparatus

Abstract

The invention provides a liquid ejection head, a liquid ejection apparatus and an inkjet printing apparatus. The liquid ejection head has a recording element including a set of ejection elements. Each of the ejection elements includes a pressure chamber, a supply flow channel connected to the pressure chamber, an ejection energy generating device arranged correspondingly to the pressure chamber, and an ejection port connected to the pressure chamber. The ejection elements constituting the same set have identical ejection operation characteristics. The ejection energy generating devices included in the ejection elements constituting the same set are connected to a common signal wire, and are configured to be applied with the same drive signal through the common signal wire to be simultaneously driven. In the ejection elements constituting the same set, when the ejection energy generating devices are simultaneously driven, liquids are ejected from the pressure chambers through the ejection ports and deposited to a same pixel on an image formation medium in an image formation operation.

Description

technical field [0001] The present invention relates to a liquid ejection head, and more particularly, to a head structure for ejecting liquid droplets by an inkjet method, and to a liquid ejection apparatus and an inkjet printing apparatus using such a head. Background technique [0002] Japanese Patent Application Laid-Open No. 2005-035271 discloses a composition in which ink droplets ejected separately from two ink ejection units are caused to collide and combine with each other in flight, and the combined droplets are deposited on a recording medium, thereby printing at a high speed High resolution images. The two ink ejection units have mutually separated (independent) pressure chambers and piezoelectric actuators, and the ejection timing and the number of ejected ink droplets of each ejection unit are controlled. Japanese Patent Application Publication No. 06-071902 discloses a technique similar to Japanese Patent Application Publication No. 2005-035271. [0003] Jap...

AI Technical Summary

Problems solved by technology

In addition, in the composition of forming one pixel by ejecting liquid droplets from a plurality of nozzles, there is such concern that regarding the deviation of the ejection direction due to manufacturing differences, there is no disclosure of a composition that suppresses the occurrence of this problem so far.

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