Seiko Epson Corporation

Yasutaka Matsumoto

Takashi Saiba

Mitsuru Sato

Satoshi Suzuki

Takuya Miyakawa

Yutaka Yamazaki

Katsuji Arakawa

Hajime Onishi

Sukenori Ichikawa

Taisuke Nakashima

An insulator-coated soft magnetic powder contains: a soft magnetic powder; and an insulating film with which a particle surface of the soft magnetic powder is coated and which contains a fluorine compound, in which an average particle diameter of the soft magnetic powder is 1 μm or more and 15 μm or less, an average thickness of the insulating film is 5 nm or more and 50 nm or less, and a relative permittivity of the fluorine compound is 5.0 or less.

Insulator-coated soft magnetic powder, method for producing insulator-coated soft magnetic powder, dust core, magnetic element, electronic device, and vehicle

A flow passage forming member includes flow passage forming member main bodiesandthat are formed of a resin material and define at least a part of a flow passage, a metal protective filmthat is provided on a surface of the flow passage forming member main bodyand a surface of the flow passage forming member main bodydefining at least the flow passage and is formed of a metal material, and a protective filmthat is laminated on the metal protective filmand contains an oxide or a nitride of at least on element selected from the group consisting of tantalum (Ta), titanium (Ti), zirconium (Zr), niobium (Nb), vanadium (V), hafnium (Hf), silicon (Si), aluminum (Al), tungsten (W), and yttrium (Y).

Flow passage forming member, liquid ejecting head, liquid ejecting apparatus, method of producing flow passage forming member, and method of producing liquid ejecting head

A method for producing a powder magnetic core includes applying energy to a surface of a soft magnetic powder coated with an insulator, exposing the soft magnetic powder to an atmosphere having an atmospheric pressure dew point of −30° C. or higher and 15° C. or lower, and forming a molded body by pressing the soft magnetic powder at 20 MPa or more and 400 MPa or less.

Method for producing powder magnetic core and powder magnetic core

A method for manufacturing a dust core, includes: applying energy to a surface of a soft magnetic powder coated with an insulating body containing a compound having an aluminum-oxygen bond; exposing the soft magnetic powder to an atmosphere having a dew point of −30° C. or higher and 15° C. or lower under an atmospheric pressure; and forming a molded product by pressing the soft magnetic powder at 20 MPa or more and 400 MPa or less.

Method for manufacturing dust core and dust core

An insulator-coated magnetic alloy powder particle includes a magnetic alloy powder particle and an insulator that coats a surface of the magnetic alloy powder particle and that has a plurality of protrusions at a surface thereof, wherein the insulator includes a first insulator in a particulate form enclosed in the protrusion, and a second insulator in a film form that coats at least a part of a surface of the first insulator.

Insulator-coated magnetic alloy powder particle, powder magnetic core, and coil part

A nozzle plate includes a nozzle open to one surface of the nozzle plate to eject ink, and a diamond-like carbon (DLC) layer disposed adjacent to the one surface. The DLC layer has surface irregularities including recesses and protrusions. The protrusions adjoining one another have ends to be in contact with the ink. The ends are located at mutually different positions in a direction intersecting the one surface.

Nozzle plate, liquid ejecting head, and liquid ejecting apparatus

A nozzle plate includes a nozzle from which a liquid is ejected and that has an opening at one surface side of the nozzle plate and a liquid repelling layer containing a cross-linked fluororesin and formed on the one surface side of the nozzle plate.

Nozzle plate, liquid ejecting head, liquid ejecting apparatus, and method of manufacturing nozzle plate

A wiping member is configured to wipe a nozzle forming surface of a liquid ejecting head, which has nozzles through which a liquid is ejected, in a first direction. The wiping member includes a fibrous material and is configured to satisfy the following:&#x3bc;

Wiping member, liquid ejecting apparatus, wiping method in cleaning mechanism, and method of controlling liquid ejecting apparatus

A method for manufacturing a droplet ejection head includes a step of forming recessed sections for forming nozzles by etching half way through a first face of a silicon substrate, a step of bonding a first support substrate to the first face of the silicon substrate, a step of reducing the thickness of the silicon substrate by processing a second face of the silicon substrate that is opposite to the first face thereof, and making the recessed sections through holes, and a step of removing the first support substrate from the silicon substrate after the reduction of the thickness of the silicon substrate.

Growing community of inventors

Suwa, Japan

Yasutaka Matsumoto