公开(公告)号：US20170225480A1

公开(公告)日：2017-08-10

申请号：US15410018

申请日：2017-01-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TAKASHI HARUGUCHI ,  KAZUNARI CHIKANAWA ,  TAKAHISA KATO ,  HIDEAKI HORIO ,  SHINJI TANAKA

IPC: B41J2/175

CPC classification number: B41J2/17563 ,  B41J2/055 ,  B41J2/14233 ,  B41J2/175 ,  B41J2002/14403 ,  B41J2002/16502

Abstract: An ink jet head includes a pressure chamber, a main flow path, an actuator, a nozzle, a first communication flow path, and a filter. The pressure chamber is filled with an ink. The main flow path supplies the ink to the pressure chamber. The actuator changes the pressure of the ink filled in the pressure chamber. The nozzle is connected to the pressure chamber and ejects the ink filled in the pressure chamber by driving of the actuator. The first communication flow path connects the pressure chamber to the main flow path. The filter is disposed at a predetermined position between the nozzle and the vicinity of a first boundary of the main flow path and the first communication flow path, and the filter captures an impurity in the ink which has a size larger than the diameter of the nozzle.

公开(公告)号：US20170274664A1

公开(公告)日：2017-09-28

申请号：US15427085

申请日：2017-02-08

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YUTAKA UETA ,  YOUSUKE TOYOFUKU ,  TAKAMI ISHIDA ,  HIDEAKI HORIO

IPC: B41J2/175

CPC classification number: B41J2/17563 ,  B41J2/14233 ,  B41J2002/14266 ,  B41J2002/14403 ,  B41J2002/14419 ,  B41J2202/11

Abstract: An ink jet head includes an actuator and a structure body. The actuator includes a thin film portion, a pressure chamber layer, and a filter. The thin film portion is deformed by application of a voltage to apply a pressure to an ink. The pressure chamber layer is formed on a surface of the pressure chamber and has a recessed portion. The filter is integrally formed with the pressure chamber layer so as to be disposed in the recessed portion, the filter having an aperture smaller than a diameter of a nozzle. The actuator is stacked on an upper surface of the structure body and joined to the upper surface thereof. A pressure chamber is formed by the recessed portion and the upper surface of the structure body, and the filter is disposed in the pressure chamber.