PRESSURE REGULATION CHAMBER, INK JET RECORDING HEAD COMPRISING IT, AND INK JET RECORDER COMPRISING IT

摘要

PROBLEM TO BE SOLVED: To provide a compact ink jet recording head having a compact and simple structure and a low cost resilient member for bringing out the function of a chamber for regulating gas pressure in a container using the resilient member to the maximum and a pressure regulation chamber employing that resilient member, and an ink jet recorder comprising that recording head. SOLUTION: A pressure regulation chamber in the ink jet recording head comprises at least one resilient deforming section 10 having a volume variable depending on the gas pressure in an interconnected container and regulating the gas pressure, and a section for supporting the resilient deforming section 10 on the container wherein the resilient deforming section 10 has one substantially circular opening, and two faces on the outer circumferential surface substantially flat before being deformed and having such a shape as continuous through a curved surface part at the forward end part on the side opposite to the opening.