Seiko Epson Corporation

Other

Avago Technologies Ecbu IP (Singapore) Pte. Ltd.

Hiroshi Ito

Jiro Kato

Hiromu Miyazawa

Toshihiro Shimizu

Eiju Hirai

Toshihiko Yamazaki

Toshiya Takahata

Tatsuro Osawa

Tahei Ishiwatari

Takehiko Okamura

Nobumasa Abe

Tomoaki Nakamura

Akira Kubota

Masayoshi Yamada

Shigeo Fujita

Motoki Takabe

Koji Sumi

Chikara Kojima

Shinichi Kamoshida

Shiro Yazaki

Takahiro Kamijo

Tsukasa Funasaka

Tatsuro Torimoto

Hiroshi Matsuda

Koichi Morozumi

Hideki Okada

Hidetsugu Shimura

Jiro Tsuruno

Kazuhiro Ichikawa

Kanechika Kiyose

Toshihiro Otake

Koichi Terao

Saburo Furukawa

Kazuaki Watanabe

Tetsuya Isshiki

Masayuki Momose

Hiroyuki Tomimatsu

Koji Horiba

Mami Tojino

Hiroshi Ue

Yasumi Ikehara

Tatsuya Shimoda

Kenji Yamamoto

Hiroshi Kato

Tsuyoshi Sano

Kiyohiko Takemoto

Hidehiko Komatsu

Bunji Ishimoto

Yoshinori Miyazawa

Masaya Ishida

Harunobu Komatsu

Hiroko Hayashi

Koji Akioka

Manabu Kondo

Hiroshi Mukai

Masanao Kunugi

Tetsuya Otsuki

Hitoshi Ohta

Tsugio Ide

Toshiaki Mikoshiba

Shiro Murakami

Tsuneo Handa

Satoshi Shimokawato

Yoshiyuki Ozawa

Manabu Shiraki

Teruyuki Mizumoto

Masanobu Motoki

Mitsuhiro Wada

Michio Yanagisawa

Koichi Higashimura

Atsushi Uchino

Mitsuhiro Horikawa

Hajime Kakishita

Sohko Ito

Jyunichi Kawashima

Tetsuya Haruyama

Tomohiro Arai

Muneyoshi Hama

A dispersion liquid includes water, a coloring material, and a dispersion resin that disperses the coloring material, and the dispersion resin has a constituent unit A containing a hydrophobic monomer, a constituent unit B containing an unsaturated aliphatic dicarboxylic acid monomer, and a constituent unit C containing an acrylamide monomer having a sulfonic acid group. The weight-average molecular weight of the dispersion resin is from 10,000 to 100,000, the content of the constituent unit A is 40 mol % or more relative to the total amount of the dispersion resin, and the content of the constituent unit B is 4 mol % or more relative to the total amount of the dispersion resin.

Dispersion resin and dispersion liquid and ink using the same

A dispersion liquid includes water, a coloring material, a dispersion resin that disperses the coloring material, and a compound having s sulfonate group and a polymerizable group. The dispersion resin has a constituent unit A containing a hydrophobic monomer and a constituent unit B containing a monomer having a sulfonate group. The weight-average molecular weight of the dispersion resin is 5,000 to 100,000, and the molecular weight of the compound is 300 or less.

Dispersion liquid, ink composition for ink jet recording, and dispersion resin

A dispersion liquid includes water, a coloring material, and a dispersing resin which disperses the coloring material, in which the dispersing resin has a predetermined constituent unit A, a predetermined constituent unit B, and a predetermined constituent unit C.

Dispersion liquid, ink composition for ink jet recording, and dispersing resin

A piezoelectric element including a piezoelectric layer having a perovskite structure including lead, zirconium, and titanium, and an electrode provided on the piezoelectric layer is provided. In the piezoelectric layer, in a range of 50 nm or smaller from an interface between the piezoelectric layer and the electrode in a thickness direction, a ratio c/a of a lattice spacing a in a direction perpendicular to the thickness direction and a lattice spacing c in the thickness direction satisfies 0.986&#x2264;c/a&#x2264;1.014.

Piezoelectric element and liquid ejecting head including piezoelectric layer having improved lattice ratio

An ultrasonic device includes: a substrate provided with a first opening and a second opening; a support film that is provided on the substrate and blocks the first opening and the second opening; a transmitting piezoelectric film that is provided on the support film at a position which overlaps the first opening when viewed in a thickness direction of the substrate and is interposed between a pair of electrodes in the thickness direction of the substrate; and a receiving piezoelectric film that is provided on the support film at a position which overlaps the second opening when viewed in the thickness direction of the substrate and is interposed between a pair of electrodes in the thickness direction of the substrate. In the thickness direction of the substrate, a thickness dimension of the transmitting piezoelectric film is smaller than a thickness dimension of the receiving piezoelectric film.

Ultrasonic device, ultrasonic module, and ultrasonic measuring apparatus

An ultrasonic sensor includes a vibration plate, a first electrode, a piezoelectric body, and a second electrode. The first electrode is laminated on the vibration plate, that has a length along a surface of the vibration plate in a first direction, and that has a width Wbe along the surface of the vibration plate in a second direction that is orthogonal to the first direction. The width Wbe is not more than the length. The piezoelectric body is laminated on the first electrode and has a width Wpz in the second direction. The second electrode is laminated on the piezoelectric body. A ratio Wbe/Wpz between the width Wbe of the first electrode and the width Wpz of the piezoelectric body is not less than 0.1 and not more than 0.8.

Ultrasonic sensor as well as probe and electronic apparatus

A water-based ink composition for ink jet recording and a coloring material liquid according to an aspect includes at least one selected from the group consisting of vinylphenol and a vinylphenol derivative, a water-soluble organic solvent, and water.

Water-based ink composition for ink jet recording and coloring material liquid

An aqueous ink for ink jet recording includes a coloring material, a water-dispersible polysiloxane-based defoaming agent, a water-soluble silicone-based surfactant, a glycol-based solvent, and resin particles including a non-ionic reactive surfactant in a constituent unit.

Aqueous ink for ink jet recording

A piezoelectric device includes a piezoelectric film having a first surface in contact with a vibrating film and a second surface on the opposite side to the first surface, first and second electrodes that are provided on the second surface of the piezoelectric film and that are disposed at positions away from each other and are short-circuited to each other at a position away from the piezoelectric film, and a third electrode that is provided between the first and second electrodes on the second surface of the piezoelectric film and is disposed at a position away from the first and second electrodes. At least parts of the contours of end portions of the first and second electrodes are defined in parallel to side portions of the third electrode.

Piezoelectric device, probe, electronic apparatus, and ultrasonic imaging apparatus

An aqueous ink for ink jet recording includes a coloring material; an ester-based defoaming agent having a water-octanol distribution coefficient of 2.0 or more and 5.0 or less; an ester-based first solvent having a water-octanol distribution coefficient of &#x2212;0.5 or more and 2.0 or less; and resin particles having a zeta potential of &#x2212;65 mV or more and &#x2212;15 mV or less and including an ester-based reactive surfactant as a constituent unit.

An ultrasonic device includes: a substrate provided with a first opening and a second opening; a support film that is provided on the substrate and closes the first opening and the second opening; a transmitting piezoelectric film that is provided on the support film at a position which overlaps the first opening when viewed in a thickness direction of the substrate and that is sandwiched between a pair of electrodes in the thickness direction of the substrate; and a receiving piezoelectric film that is provided on the support film at a position which overlaps the second opening when viewed in the thickness direction of the substrate and that is sandwiched between a pair of electrodes in an intersecting direction intersecting with the thickness direction of the substrate.

Ultrasonic device, ultrasonic module, and ultrasonic measuring device

A piezoelectric element which includes a vibrating film, a piezoelectric body disposed on one surface of the vibrating film, and a horizontal electrode structure in which electrodes are disposed at a predetermined gap therebetween on the piezoelectric body. The vibrating film includes a recess portion in a portion corresponding to the predetermined gap in plan view.

Piezoelectric element, probe, and ultrasonic measurement apparatus

An electronic device includes a base material, a first metal film disposed on the base material and containing nitrogen and chromium, and a second metal film disposed on the first metal film and containing gold. In the first metal film, the number of nitrogen atoms may be between 20% to 100% of the number of chromium atoms. Further, the distribution of nitrogen atoms in the first metal film is larger in a third region sandwiched between a first region on the base material side of the first metal film and a second region on the second metal film side than in the first region and in the second region.

Electronic device, method for producing electronic device, electronic apparatus, and moving object

A piezoelectric element includes a vibrating film, a piezoelectric body, a first electrode, a second electrode, and a groove. The piezoelectric body is arranged upon the vibrating film. The first electrode is arranged upon the piezoelectric body. The second electrode is arranged upon the piezoelectric body and at a position that is separated from the first electrode. The groove is located between the first electrode and the second electrode and splits a surface of the piezoelectric body in two, as seen in plan view from a thickness direction of the vibrating film.

Piezoelectric element, piezoelectric device, probe, electronic machine, and ultrasonic image apparatus

Growing community of inventors

Suwa, Japan

Hiroshi Ito