Ink jet head and ink jet recording apparatus

摘要

The ink jet recording apparatus serves to record an image corresponding to image data on a recording medium using an ink jet head which ejects ink in the form of an ink droplet. The ink jet head includes an ejection orifice substrate (24) in which an ejection orifice (38) is bored, a head substrate (12) disposed at a predetermined distance from the ejection orifice substrate to define an ink passage (48) between the ejection orifice substrate and the head substrate, ejection control device which controls the ejection of the ink from the ejection orifice. The ink guide dike (50) is provided on a surface of the head substrate on a side of the ink passage to form an ink flow directed from an upstream side of the ejection orifice in the ink passage to the ejection orifice.