Seiko Epson Corporation

Takayuki Shimosaka

Hitoshi Takaai

Hiroyuki Hagiwara

Yuma Fukuzawa

Hiroaki Okui

Daisuke Matsumoto

Takuma Hayashi

Kazushige Hakeda

Toshinobu Yamazaki

Kentaro Murakami

Naoya Sato

Tomoo Kinoshita

Kazuyuki Katagiri

Isao Takimoto

Hidekazu Todoroki

Provided is a method for manufacturing a liquid ejecting head which includes a plurality of chips, each of which includes a plurality of segments, each segment including a pressure generating chamber communicating with a nozzle opening through which liquid is discharged, a diaphragm which is a portion of the pressure generating chamber, and a pressure generating unit causing a pressure change in the pressure generating chamber through the diaphragm, the method including measuring natural frequencies of the plurality of segments included in each of the chips, classifying the chips into ranks using the maximum value of the natural frequencies of the chips as a reference, and manufacturing the liquid ejecting head which includes the chips selected based on the ranks.

Method for manufacturing liquid ejecting head and liquid ejecting head

Provided is a liquid ejecting head including: a first board on which a driving element for ejecting liquid is installed; a second board which is installed on the surface of the first board and covers the driving element; a wiring board that includes a first surface on which a wiring, where a driving signal is supplied to the driving element, is formed and a second surface that is at the opposite side to the first surface, and where the first surface of a first end section is joined to the surface of the first board; and a filling material which covers the wiring by being formed at least between the first surface and a wall surface of the second board, in which the height of the filling material with respect to the surface of the first board is high at the first surface side in comparison to the second surface side.

Liquid ejecting head and liquid ejecting apparatus

A liquid ejecting head includes driving elements and electrodes each extending a second direction for ejecting liquid of pressure chambers through nozzles. The driving elements are classified into a first element group and a second element group. The electrodes are arranged along a first direction intersecting the second direction and are classified into a first electrode group electrically connected to the first element group, a second electrode group electrically connected to the second element group and a third electrode group not contribute to the ejecting liquid.

Growing community of inventors

Matsumoto, Japan

Takayuki Shimosaka