Abstract: There is provided an epoxy resin composition including: an epoxy resin, a thixotropic agent, a photobase generator, and an ether skeleton polythiol.

Abstract: An inkjet recording head comprising a flow channel member, wherein the flow channel member is formed of a heat-cured product of a molding material comprising a resin composition comprising a thermosetting epoxy resin and a curing agent, and a filler; the filler comprises alumina and silica; and with d50 as a median diameter of the silica and with alumina A as the alumina having a median diameter of d50/4 or less, the content of the alumina A is 11 parts by mass or more relative to 100 parts by mass of the silica.

Abstract: An ink jet recording head that includes a substrate having an ejection orifice for ejecting a liquid and a member provided with a recessed portion for accommodating the substrate, the head including a gap formed between a wall of the recessed portion of the member and the substrate, and a sealing material that seals the gap, in which the sealing material contains a cured product of a composition containing at least a hydrogenated bisphenol A type epoxy resin, a solid basic compound, and polythiol.

Abstract: A unit for electrostatic filter includes: a repeated structure of patterns that are respectively formed of one selected from at least two different substances having different work functions. The patterns formed of the different substances are put in contact with each other. The work functions differ by 1 eV or greater between the different substances put in contact with each other in the patterns.

Abstract: There is provided an epoxy resin composition containing an epoxy resin, a solid basic compound, and a polythiol. By preparing a mixture 1 by kneading the epoxy resin with the solid basic compound, and then kneading the polythiol therewith, the dissolution of the solid basic compound into the polythiol is rate-limited to ensure the pot life, and due to a catalyst action by the dissolution of the solid basic compound at a time of heating, heat curability in a short time is realized.

Abstract: There is provided an epoxy resin composition including: an epoxy resin, a thixotropic agent, a photobase generator, and an ether skeleton polythiol.

Abstract: In an ink jet recording head including an electric wiring substrate having an electric contact terminal for receiving an electric signal from an ink jet apparatus, an electric wiring tape which electrically connects the electric wiring substrate and a recording element substrate to each other, and an adhesive sheet which fixes the electric wiring substrate and the electric wiring tape to each other, the electric wiring tape and the electric wiring substrate are fixed to each other with the adhesive sheet containing a polyester resin and an epoxy resin.

Abstract: Provided is an ink jet recording head having a flow path member. The flow path member is made of a thermoset product of a thermosetting molding composition containing a solid epoxy resin composition containing an epoxy resin and a phenolic resin, each solid at ordinary temperatures, and an alumina filler.

Abstract: A liquid ejection head includes a substrate having an ejection opening through which a liquid is ejected, a recessed member having a wall defining a recess in which the substrate is disposed away from the wall with a gap therebetween, and a sealing member filling the gap. The sealing member includes a cured product of a composition containing a first polyol compound, an isocyanate compound having an isocyanate group, and a second polyol compound that is more reactive with the isocyanate group than the first polyol compound.

Abstract: Provided is an ink jet recording head having a flow path member. The flow path member is made of a thermoset product of a thermosetting molding composition containing a solid epoxy resin composition containing an epoxy resin and a phenolic resin, each solid at ordinary temperatures, and an alumina filler.

Abstract: In an ink jet recording head including an electric wiring substrate having an electric contact terminal for receiving an electric signal from an ink jet apparatus, an electric wiring tape which electrically connects the electric wiring substrate and a recording element substrate to each other, and an adhesive sheet which fixes the electric wiring substrate and the electric wiring tape to each other, the electric wiring tape and the electric wiring substrate are fixed to each other with the adhesive sheet containing a polyester resin and an epoxy resin.

Abstract: A liquid ejection head for ejecting a liquid, including a flow passage member, which is composed of a first resin and which is provided with a flow passage configured to come into contact with the liquid, and a plurality of resin-coated members having a core-sheath structure composed of a filler constituting an inner core and a second resin constituting an outer core, wherein the plurality of the resin-coated members are contained in the flow passage member.

Abstract: A liquid ejection head includes a substrate having an ejection opening through which a liquid is ejected, a recessed member having a wall defining a recess in which the substrate is disposed away from the wall with a gap therebetween, and a sealing member filling the gap. The sealing member includes a cured product of a composition containing a first polyol compound, an isocyanate compound having an isocyanate group, and a second polyol compound that is more reactive with the isocyanate group than the first polyol compound.

Abstract: A first sealant for sealing a region under an electrical connection portion and a second sealant for sealing a region on the electrical connection portion are used as sealants for the electrical connection portion for connecting an electric wiring member to an ejection energy generation element of a liquid ejection head, these sealants contain the same base agent and curing agent, and the linear expansion coefficients of the first sealant and the second sealant after curing are adjusted so as to become in a predetermined range.

Abstract: A liquid ejection head for ejecting a liquid, including a flow passage member, which is composed of a first resin and which is provided with a flow passage configured to come into contact with the liquid, and a plurality of resin-coated members having a core-sheath structure composed of a filler constituting an inner core and a second resin constituting an outer core, wherein the plurality of the resin-coated members are contained in the flow passage member.

Abstract: A first sealant for sealing a region under an electrical connection portion and a second sealant for sealing a region on the electrical connection portion are used as sealants for the electrical connection portion for connecting an electric wiring member to an ejection energy generation element of a liquid ejection head, these sealants contain the same base agent and curing agent, and the linear expansion coefficients of the first sealant and the second sealant after curing are adjusted so as to become in a predetermined range.

Abstract: The invention provides a molding material including a liquid epoxy resin composition containing an epoxy resin, a curing agent or a curing catalyst, a filler, a thixotropy-imparting agent, and a wetting dispersant.

Abstract: Precise positioning of a film used to seal an electrical connection on a liquid ejecting head is made possible. Specifically, positioning is conducted in a state in which part of the film is held to a finger by suction. Next, the finger is moved downward while in the positioned state, and part of the film is pressed against a wiring board. With part of the film fixed to the wiring board in this way, a sealing resin flows while being covered by the film. Consequently, shifting of the position of the film as the sealing resin flows may be prevented. As a result, it becomes possible to conduct covering with the film in a precisely positioned state.

Abstract: The invention provides a molding material including a liquid epoxy resin composition containing an epoxy resin, a curing agent or a curing catalyst, a filler, a thixotropy-imparting agent, and a wetting dispersant.

Abstract: Precise positioning of a film used to seal an electrical connection on a liquid ejecting head is made possible. Specifically, positioning is conducted in a state in which part of the film is held to a finger by suction. Next, the finger is moved downward while in the positioned state, and part of the film is pressed against a wiring board. With part of the film fixed to the wiring board in this way, a sealing resin flows while being covered by the film. Consequently, shifting of the position of the film as the sealing resin flows may be prevented. As a result, it becomes possible to conduct covering with the film in a precisely positioned state.