Jet hole plate, head chip, liquid jet head, liquid jet recording apparatus, and method of manufacturing jet hole plate

Abstract

A jet hole plate, a head chip, a liquid jet head, a liquid jet recording apparatus, and a method of manufacturing the jet hole plate which are high in quality are provided while achieving the reduction in cost. The jet hole plate according to an aspect of the present disclosure is provided with a plate main body provided with a jet hole configured to jet a liquid. The jet hole is provided with a taper portion which has a circular-arc inner peripheral surface formed in a circular arc shape having a uniform curvature radius in a cross-sectional surface along a jet direction, opens on the first surface, and in which an inside diameter at a position gradually decreases as the position moves downstream, and a straight portion which is connected to a downstream end portion of the taper portion, opens on the second surface, and is formed to have a uniform inside diameter throughout an entire length in the jet direction. When a dimension in the jet direction of the plate main body is denoted by H, a dimension in the jet direction of the straight portion is denoted by h, and a curvature radius of the circular-arc inner peripheral surface is denoted by r, 1<r/(H-h) is satisfied.

Dependencies are inferred from the claim text.