Mitsui Chemicals, Inc.

Seiko Epson Corporation

Hiroshi Maekawa

Mitsuru Sadamoto

Tetsuya Watanabe

Kentaro Suzuki

Hiroko Wachi

Kazuo Hisamatsu

Yuji Emura

Souta Itou

Koichi Ogawa

Katsuhiko Mizushima

Yukiko Egami

Tsuyoshi Sano

Takayoshi Kagata

Akira Mizutani

Atsushi Denda

Shin Fukuda

Norio Nakayama

Toshihiro Yoshimura

Keiji Ueno

Takahiro Maeda

Yasuyuki Kagawa

Katsumi Isozaki

An ink composition includes a white coloring material, polymer particles, and a solvent, the polymer particles satisfying the relationship represented by the following expression (1).&#x2266;0.33+20&#x2003;&#x2003;(1)

Ink composition

A gas generating device for generating an oxygen gas and/or a hydrogen gas from an electrolytic solution containing water, including an anode electrode, a cathode electrode, a plurality of through holes and a gas containing unit. The anode electrode (photocatalyst supporting electrode) has a photocatalyst-containing layer containing a photocatalyst producing an oxygen gas from the electrolytic solution by a photocatalytic reaction. The cathode electrode produces a hydrogen gas from electrons and hydrogen ions that are generated in the electrolytic solution by the photocatalytic reaction at the photocatalyst-containing layer. The through holes are formed on at least one of the anode electrode and the cathode electrode, and the through holes allow the produced oxygen gas or hydrogen gas to pass therethrough, but do not allow the electrolytic solution to pass therethrough. The gas containing unit holds the oxygen gas or hydrogen gas that has passed through the through holes.

Gas generating device and method for generating gas

The aqueous ink white pigment of the present embodiment contains a metal compound (1) which satisfies the following specific conditions of (A), (B), and (C).

Aqueous ink pigment, aqueous ink composition containing the same, and images or printed matter thereof

An electrolyzer is comprised of an anode and a cathode which are in contact with an electrolytic solution, wherein at least one of the anode and the cathode is composed of an electric conductor having a gas permeable structure comprising a gas generating surface at which gas is generated by electrolysis of the electrolytic solution, a plurality of through holes leading from the gas generating surface to a different surface and allowing the gas generated on the gas generating surface to selectively pass therethrough, and a gas releasing surface which is the different surface for releasing the gas supplied from the gas generating surface via the through holes. At least one of a surface treatment which causes the gas generating surface to be lyophilic for the electrolytic solution and a surface treatment which causes the gas releasing surface to be lyophobic for the electrolytic solution is performed.

Electrolyzer, electrodes used therefor, and electrolysis method

A gas generating device of present invention is generated a first gas at a first carbon electrode by applying a voltage between said first carbon electrode and a second electrode to electrolyzing an electrolytic solution. The first carbon electrode is an anode or a cathode. The first carbon electrode is provided with a plurality of fine gas flow channels which selectively pass said first gas generated on one surface of said first carbon electrode to the other surface without allowing said electrolytic solution to permeate therethrough.

Gas generating device and carbon electrode for gas generation

A microchip device of the present invention includes: a microchip in which a liquid flow path is formed for liquid to flow; a gas flow path provided along the liquid flow path; and a plurality of gap sections formed between the liquid flow path and the gas flow path and having one opening thereof facing the liquid flow path and the other opening thereof facing the gas flow path, the gap of the gap section being made so as to be gap through which gas can pass but the liquid cannot pass, and a gas liquid interface being formed at the gap section.

Microchip device

Urethane-modified polyester resin which has a total acid value not greater than 10 KOH mg/g and is obtained by kneading, in a molten state, a base polyester resin (A) having an acid value of 5 to 20 KOH mg/g and a hydroxyl value of 40 to 70 KOH mg/g, a low-molecular-weight polyester resin (B) having an acid value not greater than 5 KOH mg/g, a hydroxyl value not greater than 10 KOH mg/g and a weight-average molecular weight of 3,000 to 5,000 and a polyisocyanate compound, wherein components (A) and (B) are at a weight ratio of 3 to 5:7 to 5 and the polyisocyanate compound is in an amount of 0.2 to 1.2 equivalent, in terms of an isocyanate group per equivalent, of the total hydroxyl groups of all the resins.

Electrostatic image developing toner

Urethane modified polyester resin which has a total acid value not greater than 10 KOH mg/g and has been obtained by kneading, in a molten state, a base polyester resin (A) having an acid value of 5 to 20 KOH mg/g and a hydroxyl value of 40 to 70 KOH mg/g, a low-molecular-weight polyester resin (B) having an acid value not greater than 5 KOH mg/g, a hydroxyl value not greater than 10 KOH mg/g and a weight-average molecular weight of 3,000 to 5,000 and a polyisocyanate compound, by using the components (A) and (B) at a weight ratio of 3 to 5:7 to 5 and the polyisocyanate compound in an amount of 0.2 to 1.2 equivalent, in terms of an isocyanate group per equivalent, of the total hydroxyl groups of all the resins. This novel urethane-modified polyester resin (C) is used as a binder resin for the toner. For the preparation of the toner, the resin is mixed and kneaded with a colorant, magnetic powders, charge control agent and the like under a molten state, followed by cooling and pulverization.

Growing community of inventors

Ichihara, Japan

Hiroshi Maekawa