Abstract: Provided is a manufacturing method for a film containing a condensate of hydrolyzable silane compounds, the manufacturing method including: forming, on a base material, a layer containing a condensate of a hydrolyzable silane compound having an epoxy group and a hydrolyzable silane compound having a fluorine-containing group, and a solvent; and curing the layer, the solvent containing one of ethanol and methanol serving as a first alcohol component, and at least one kind of alcohol having a boiling point of from 90° C. to 200° C. serving as a second alcohol component, the solvent having a content of the second alcohol component of from 2.00 mass % to 60.00 mass %, the condensate having a degree of condensation of from 20% to 80%.

Abstract: A process for producing a liquid ejection head having a substrate and an ejection orifice forming member having an ejection orifice for ejecting liquid, including forming, on the substrate, a photocationically polymerizable resin layer which includes a photocationically polymerizable resin material and becomes the ejection orifice forming member; laminating, on the uncured photocationically polymerizable resin layer, a layer containing a condensation product of a hydrolyzable silane compound having a cationically polymerizable epoxy group and a hydrolyzable silane compound having a fluorine-containing group; laminating a water-repellent layer including a hydrolyzable silane compound having a perfluoropolyether group on the condensation-product-containing layer; subjecting the photocationically polymerizable resin layer, condensation-product-containing layer, and water-repellent layer to pattern exposure; collectively curing exposed portions of the photocationically polymerizable resin layer, condensation-prod

Abstract: Provided is an ink jet recording head, including a member provided with an ejection orifice for ejecting ink, in which the ink jet recording head further includes a water-repellent layer including a cured product of a condensed product obtained by condensation of a hydrolyzable silane compound having an epoxy group and a hydrolyzable silane compound having a perfluoropolyether group on a surface of the member on a side on which the ejection orifice opens.

Abstract: Provided is a sealant for use in ink jet recording heads, comprising a cationically polymerizable resin; a fluorine-containing compound that is liquid at a temperature in a range of 20° C.±15° C.; and a cationic polymerization initiator.

Abstract: Provided is an ink jet recording head, including a member provided with an ejection orifice for ejecting ink, in which the ink jet recording head further includes a water-repellent layer including a cured product of a condensed product obtained by condensation of a hydrolyzable silane compound having an epoxy group and a hydrolyzable silane compound having a perfluoropolyether group on a surface of the member on a side on which the ejection orifice opens.

Abstract: Provided is a liquid discharge head comprising a discharge port-forming member having discharge ports for discharging a liquid and having a surface provided with a liquid-repellent film. The liquid-repellent film includes a layer containing a resin composition containing at least one of polyurethane and polyrotaxane disposed on the discharge port-forming member and a layer containing a fluorine compound and having a thickness of 10 nm or less disposed on the resin composition-containing layer. When a scratch-forming tool, a diamond tip having a tip diameter of 15 ?m, is pressed onto the liquid-repellent film with a load of 0.098 N (10 gf) and is reciprocated ten times, the depth of a scratch formed on the surface of the liquid-repellent film is smaller than the thickness of the fluorine compound-containing layer.

Abstract: Provided is an ink jet recording head, including a member provided with an ejection orifice for ejecting ink, in which the ink jet recording head further includes a water-repellent layer including a cured product of a condensed product obtained by condensation of a hydrolyzable silane compound having an epoxy group and a hydrolyzable silane compound having a perfluoropolyether group on a surface of the member on a side on which the ejection orifice opens.

Abstract: A process for producing a liquid ejection head including a silicon substrate having a supply port to supply a liquid to a flow path, and an ejection-orifice-forming member forming the flow path between the ejection-orifice-forming member and the silicon substrate and having an ejection orifice to eject the liquid in the flow path. The process includes forming an etching protection film so as to cover the ejection-orifice-forming member; forming the supply port passing through the silicon substrate by anisotropic etching using an alkaline aqueous solution; and removing the etching protection film. The etching protection film includes an organic polymer material having a storage modulus at 80° C. of 1.0×106 Pa or higher.

Abstract: Provided is an ink jet recording head, including a member provided with an ejection orifice for ejecting ink, in which the ink jet recording head further includes a water-repellent layer including a cured product of a condensed product obtained by condensation of a hydrolyzable silane compound having an epoxy group and a hydrolyzable silane compound having a perfluoropolyether group on a surface of the member on a side on which the ejection orifice opens.

Abstract: Provided is an ink jet recording head, including a member provided with an ejection orifice for ejecting ink, in which the ink jet recording head further includes a water-repellent layer including a cured product of a condensed product obtained by condensation of a hydrolyzable silane compound having an epoxy group and a hydrolyzable silane compound having a perfluoropolyether group on a surface of the member on a side on which the ejection orifice opens.

Abstract: A liquid ejection head includes a member having a liquid ejection port, wherein a surface of the member on which the ejection port is open is formed by a curing reaction of a siloxane compound having a first group and a second group. The first group has a fluorine atom. The second group has at least one selected from the group consisting of a hydroxy group, a carboxy group, a carbonyl group, and a polyether structure.

Abstract: A liquid discharge head includes a substrate including an energy generating element that generates energy used to discharge liquid and a discharge port member having a discharge port surface with a discharge port line including discharge ports, through which the liquid is discharged, arrayed in a first direction. The discharge port surface includes a groove portion disposed between the discharge port line and a first end of the discharge port member in a second direction intersecting the first direction. The groove portion extends along the discharge port line. The discharge port surface further includes an inclined surface disposed between an end of the discharge port line and a second end of the discharge port member in the first direction. The inclined surface is inclined toward the second end.

Abstract: Provided is a method of water repellent treatment for a pattern surface, the method including the steps of agitatingly mixing a perfluoropolyether-group-containing silane water repellent, an organic acid, a fluorine-containing solvent capable of dissolving the perfluoropolyether-group-containing silane water repellent and the organic acid, and water to hydrolyze the perfluoropolyether-group-containing silane water repellent, thereby obtaining a partial hydrolysate solution; forming a photosensitive resin layer on a substrate; applying the partial hydrolysate solution onto the photosensitive resin layer to form a water-repellent film; performing patterning exposure to the photosensitive resin layer and the water-repellent film; performing heat treatment to collectively cure an exposed portion of the photosensitive resin layer and the water-repellent film; and removing a non-exposed portion of the photosensitive resin layer and the water-repellent film by development treatment to form a pattern.

Abstract: Provided is a sealant for use in ink jet recording heads, comprising a cationically polymerizable resin; a fluorine-containing compound that is liquid at a temperature in a range of 20° C.±15° C.; and a cationic polymerization initiator.

Abstract: There is provided an inkjet printing apparatus which can perform stable ejection also in successive printing at high speed even in a case of performing printing in use of a print head provided with an ejection opening surface having hydrophilic properties. The inkjet printing apparatus comprises an inkjet print head wherein the control unit controls the print head such that, in a case where the ejection number of the ink ejected from the print head after removing the ink on the ejection opening surface by the ink removal unit is equal to or more than a threshold, a drive energy amount that is supplied for the preliminary ejection operation is larger than a drive energy amount that is supplied for the preliminary ejection operation in a case where the ejection number is less than the threshold.

Abstract: Provided is an ink jet recording head, including a member provided with an ejection orifice for ejecting ink, in which the ink jet recording head further includes a water-repellent layer including a cured product of a condensed product obtained by condensation of a hydrolyzable silane compound having an epoxy group and a hydrolyzable silane compound having a perfluoropolyether group on a surface of the member on a side on which the ejection orifice opens.

Abstract: Provided is a liquid discharge head comprising a discharge port-forming member having discharge ports for discharging a liquid and having a surface provided with a liquid-repellent film. The liquid-repellent film includes a layer containing a resin composition containing at least one of polyurethane and polyrotaxane disposed on the discharge port-forming member and a layer containing a fluorine compound and having a thickness of 10 nm or less disposed on the resin composition-containing layer. When a scratch-forming tool, a diamond tip having a tip diameter of 15 ?m, is pressed onto the liquid-repellent film with a load of 0.098 N (10 gf) and is reciprocated ten times, the depth of a scratch formed on the surface of the liquid-repellent film is smaller than the thickness of the fluorine compound-containing layer.

Abstract: A process for producing a liquid ejection head including a silicon substrate having a supply port to supply a liquid to a flow path, and an ejection-orifice-forming member forming the flow path between the ejection-orifice-forming member and the silicon substrate and having an ejection orifice to eject the liquid in the flow path. The process includes forming an etching protection film so as to cover the ejection-orifice-forming member; forming the supply port passing through the silicon substrate by anisotropic etching using an alkaline aqueous solution; and removing the etching protection film. The etching protection film includes an organic polymer material having a storage modulus at 80° C. of 1.0×106 Pa or higher.

Abstract: Provided are a liquid-repellent film in which the aggregation of a liquid-repellent material is suppressed and which is excellent in liquid-repellent properties and a production method therefor, and a fine structure using the liquid-repellent film and a production method therefor. The liquid-repellent film is a liquid-repellent film formed of a silane compound having a specific perfluoropolyether group and a fluorine-containing acrylic homopolymer.

Abstract: A process for producing a liquid ejection head having a substrate and an ejection orifice forming member having an ejection orifice for ejecting liquid, including forming, on the substrate, a photocationically polymerizable resin layer which includes a photocationically polymerizable resin material and becomes the ejection orifice forming member; laminating, on the uncured photocationically polymerizable resin layer, a layer containing a condensation product of a hydrolyzable silane compound having a cationically polymerizable epoxy group and a hydrolyzable silane compound having a fluorine-containing group; laminating a water-repellent layer including a hydrolyzable silane compound having a perfluoropolyether group on the condensation-product-containing layer; subjecting the photocationically polymerizable resin layer, condensation-product-containing layer, and water-repellent layer to pattern exposure; collectively curing exposed portions of the photocationically polymerizable resin layer, condensation-prod