公开(公告)号：US10710366B2

公开(公告)日：2020-07-14

申请号：US16189330

申请日：2018-11-13

Applicant: SII Printek Inc.

Inventor： Masakazu Hirata ,  Kenji Takano ,  Emiko Osaka

IPC: B41J2/14 ,  B41J2/165 ,  B41J2/16 ,  B41J2/21

Abstract: Provided herein are a jet hole plate, a liquid jet head, and a liquid jet recording apparatus that can achieve a long life. A jet hole plate according to an embodiment of the present disclosure is a jet hole plate for use in a liquid jet head. The jet hole plate includes a metal substrate provided with a plurality of jet holes. In the metal substrate, an average crystal grain size in outlet edges of the jet holes is smaller than that in surrounding regions around the outlet edges.