Abstract: A printed wiring board in the present disclosure includes a core layer, a first buildup layer, a second buildup layer, and a through hole. The core layer has a conductor circuit located on a surface of an insulator. The first buildup layer containing a first resin is laminated on a surface of the core layer. The second buildup layer containing a second resin is laminated on a surface of the first buildup layer. The through hole extends through the core layer, the first buildup layer, and the second buildup layer. The first resin and the second resin are different from each other. The second buildup layer includes a plurality of filled vias filled with a conductor which are located around a circumference of an opening of the through hole.

Abstract: An ink set to be used for printing poorly absorbent or non-absorbent printing media includes an aqueous non-white ink composition containing a non-white pigment, an aqueous white ink composition containing a white pigment, and a treatment liquid containing a flocculant and an alkanolamine.

Abstract: An ink replenish container comprises a container main body that is able to store the ink; and an ink outlet formation member, attached to a front end side of the container main body, to form an ink outlet. The container main body includes a screw formation portion having a screw for engaging with the ink outlet formation member, and a shoulder portion provided on a front end side of the screw formation portion. The ink outlet formation member includes an abutting portion that abuts the shoulder portion.

Abstract: Provided is an ink jet recording method using an ink jet recording apparatus having an ink jet head, the method including: a colored ink adhesion step of discharging an aqueous colored ink composition containing a coloring material from an ink jet head to adhere to a recording medium; and a clear ink adhesion step of discharging an aqueous clear ink composition from an ink jet head to adhere to the recording medium, in which the aqueous clear ink composition contains wax particles, the ink jet recording apparatus has a circulation path for circulating the aqueous clear ink composition, and in the clear ink adhesion step, the aqueous clear ink composition circulated in the circulation path is discharged.

Abstract: A process of forming a field effect transistor (FET) of a type of high electron mobility transistor (HEMT) reducing damages caused in a semiconductor layer is disclosed. The process carries out steps of: (a) depositing an insulating film on a semiconductor stack; (b) depositing a conductive film on the insulating film; (c) forming an opening in the conductive film and the insulating film by a dry-etching using ions of reactive gas to expose a surface of the semiconductor stack; and (d) forming a gate electrode to be in contact with the surface of the semiconductor stack through the opening, the gate electrode filling the opening in the conductive film and the insulating film.

Abstract: A process of forming a field effect transistor (FET) of a type of high electron mobility transistor (HEMT) reducing damages caused in a semiconductor layer is disclosed. The process carries out steps of: (a) depositing an insulating film on a semiconductor stack; (b) depositing a conductive film on the insulating film; (c) forming an opening in the conductive film and the insulating film by a dry-etching using ions of reactive gas to expose a surface of the semiconductor stack; and (d) forming a gate electrode to be in contact with the surface of the semiconductor stack through the opening, the gate electrode filling the opening in the conductive film and the insulating film.

Abstract: An ink jet printing method includes an application step of ejecting a coloring ink composition functioning to color a printing medium through an ejection opening of a first ink jet head to apply the coloring ink composition onto a printing medium, and an application step of ejecting a non-coloring composition different from the coloring ink composition through an ejection opening of a second ink jet head to apply the non-coloring composition onto the printing medium. The coloring ink composition is circulated through a circulation path connected to the first ink jet head after being fed into the first ink jet head and before being ejected through the ejection opening of the first ink jet head. The non-coloring composition is not circulated through a circulation path after being fed into the second ink jet head and before being ejected through the ejection opening of the second ink jet head.

Abstract: A high electron mobility transistor (HEMT) includes a semiconductor layer on a substrate; an insulating film on the semiconductor layer; a gate electrode in contact with a surface of the semiconductor layer through an opening in the insulating film; and a conductive film provided between the insulating film and a portion of the gate electrode at peripheries of the opening. The insulating film and the conductive film are made of respective materials containing silicon (Si). The gate electrode includes a Schottky metal in contact with the semiconductor layer and a cover metal provided on the Schottky metal. The Schottky metal covers the conductive film thereunder.

Abstract: A process of forming an epitaxial substrate is disclosed, where the epitaxial substrate includes a nucleus forming layer made of aluminum nitride (AlN) grown on a substrate made of silicon carbide (SiC). The process includes steps of: (1) first measuring the first reflectivity R0 of a surface of the SiC substrate, (2) growing the nucleus forming layer made of AlN as measuring second reflectivity R1 of a grown surface of the AlN nucleus forming layer, and (3) ending the growth of the AlN nucleus forming layer when a ratio R1/R0 of the reflectivity enters a preset range.

Abstract: Convenience of an ink bottle and a bottle set is improved. An ink bottle includes: a container portion that contains ink; a guiding portion that is formed in one end portion of the container portion, and includes an outflow port from which the ink in the container portion flow out; and a cover that covers at least an end portion of the container portion on the opposite side of the guiding portion.

Abstract: Disclosed herein is a coil component that includes a first planar spiral conductor; a second planar spiral conductor laminated on the first planar spiral conductor and wound in an opposite direction to the first planar spiral conductor; a first external terminal electrically connected to an outer peripheral end of the first planar spiral conductor; a second external terminal electrically connected to an outer peripheral end of the second planar spiral conductor; and a third external terminal electrically connected in common to inner peripheral ends of the first and second planar spiral conductors.

Abstract: A printer comprises a main body cover configured to change over a state between a closed state and an open state; a tank including an ink container portion configured to contain ink and an ink inlet configured to inject the ink; a tank cover configured to change over a state between a closed state and an open state; and an ink bottle including a container portion and a delivery portion. In the open state of both the main body cover and the tank cover, the ink bottle is self-supported and configured to deliver the ink from the delivery portion of the ink bottle to the ink inlet. A space is formed between the main body cover and the ink bottle when the ink bottle is self-supported. At least part of the ink bottle is located in a locus drawn by the main body cover during rotation.

Abstract: An ink replenish container comprises a container main body that is able to store the ink; an ink outlet formation member, attached to a front end side of the container main body, to form an ink outlet; and a cap attachable to a front end side of the ink outlet formation member. The ink outlet includes an outer circumferential surface and an inner circumferential surface located inward of the outer circumferential surface, the inner circumferential surface surrounding an opening through which the ink passes. The cap includes a first protrusion that is configured to contact with the outer circumferential surface of the ink outlet to form a first exit seal portion, and a second protrusion that is configured to contact with the inner circumferential surface of the ink outlet to form a second exit seal portion.

Abstract: A flexible waveguide includes an inner dielectric, and a flexible external conductor disposed in a position covering an outer periphery of the dielectric, the flexible waveguide conducting a radio wave in a frequency band equal to or longer than a millimeter wave or a submillimeter wave near 60 GHz or more. The external conductor includes a metal layer, the metal layer has a shape displacement structure, a shape of an inner periphery side section of which faces the inner dielectric and is cyclic in the waveguide longitudinal direction, the shape displacement structure being a cyclic structure satisfying ?mr<?ch, where ?mr represents a center wavelength of a main reflection band due to the cyclic structure and ?ch represents a cutoff wavelength in a high-order mode of the waveguide.

Abstract: A method of producing a resin-impregnated fiber bundle roll body includes unwinding a fiber bundle from a bobbin; winding the fiber bundle on a winding core rotating around a fixed axis through a movable winding head to prepare a product; and leading the fiber bundle taken off in the unwinding to the winding between the unwinding and winding, wherein the leading or winding includes a resin impregnating the fiber bundle, and the winding includes a fiber content calculation of a fiber content in a layer of the fiber bundle on the winding core of an intermediate product to control one according to the fiber content: a resin adhesion amount in the resin adhesion operation; a winding tension of the fiber bundle applied to the intermediate product; a removal amount of a surplus resin layer on an outer surface of the intermediate product; and a resin viscosity in the intermediate product.

Abstract: An ink jet recording method according to the present embodiment includes ejecting a water-based ink composition where a content of an organic solvent having a standard boiling point of 280° C. or more is 0.5% by mass or less from a head nozzle and attaching the water-based ink composition to a recording medium, in which a contact angle between at least a part of the surface of the member in contact with the water-based ink composition in the members in the head and the water-based ink composition is 30° or less, and the surface of the member in contact with the water-based ink composition is formed of a material having an SP value of 9 or less.

Abstract: An ink replenish container comprises a container main body that is able to store the ink; an ink outlet formation member, attached to a front end side of the container main body, to form an ink outlet; and a cap attachable to a front end side of the ink outlet formation member. The ink outlet includes an outer circumferential surface and an inner circumferential surface located inward of the outer circumferential surface, the inner circumferential surface surrounding an opening through which the ink passes. The cap includes a first protrusion that is configured to contact with the outer circumferential surface of the ink outlet to form a first exit seal portion, and a second protrusion that is configured to contact with the inner circumferential surface of the ink outlet to form a second exit seal portion.

Abstract: Disclosed herein is a coil component that includes first and second magnetic members; a coil layer arranged between the first and second magnetic members, the coil layer including a plurality of conductor layers and a plurality of non-magnetic insulating layers, the conductor layers and the non-magnetic insulating layers being alternately laminated, the conductor layers being connected to each other via through holes formed in the non-magnetic insulating layers to form a coil pattern; a first external terminal covering one end of the coil pattern exposed to at least one of side surfaces of the coil layer without covering the first and second magnetic members; and a second external terminal covering other end of the coil pattern exposed to at least one of the side surfaces of the coil layer without covering the first and second magnetic members.

Abstract: An aqueous ink composition contains an organic solvent, a surfactant, and resin fine particles. The resin of the resin fine particles takes 500 minutes or more to melt at 40° C. with the surfactant, which is a temperature relatively close to the temperature the ink jet head is heated to by the platen or the like during recording. Such an aqueous ink composition exhibits a good filling property and can be continuously ejected stably.

Abstract: Provided is an ink composition that includes a color material, water, an organic solvent, and polymer particles, the organic solvent including an organic solvent with a standard boiling point of equal to or greater than 150° C. and equal to or less than 250° C., the content of the organic solvent that is an alkyl polyol with a standard boiling point of equal to or greater than 280° C. being equal to or less than 2.0% by mass with respect to a total amount of the ink composition, the polymer particles having a core-shell structure including core polymer and shell polymer, and a glass transition temperature of the shell polymer being higher than that of the core polymer, and that is used for a recording method using the ink composition and an aggregating liquid containing an aggregating agent capable of aggregating components of the ink composition and increasing viscosity of the components.