Canon Kabushiki Kaisha

Kazunari Ishizuka

Isamu Horiuchi

Yohei Hamade

Isao Imamura

Satoshi Tsutsui

Miho Ishii

Shimpei Otaka

Ken Ikegame

Tadayoshi Inamoto

Akihiko Shimomura

Yohei Sato

Masako Shimomura

Ryoichiro Kurobe

Shoji Shiba

Hiroaki Mihara

Hyou Takahashi

Haruka Yamaji

Akihiko Shimimura

Hikaru Sugimoto

A method for manufacturing a microstructure comprising cured products of photosensitive resin compositions, the method comprising: a step of forming at least two layers of the photosensitive resin compositions each comprising a photopolymerization initiator; a step of subjecting each of the formed at least two layers of the photosensitive resin compositions to patterning exposure; and a step of collectively developing the exposed at least two layers of the photosensitive resin compositions to obtain a microstructure, wherein in the at least two layers of the photosensitive resin compositions, 90% by mass or more of the photopolymerization initiators contained in at least one of the two adjacent layers of the photosensitive resin compositions is a nonionic photopolymerization initiator.

Method for manufacturing microstructure including cured products of photosensitive resin compositions

Provided is a method for manufacturing a liquid ejection head including an ejection orifice for ejecting a liquid, a substrate and a flow path forming member that is joined to the substrate to form a liquid flow path communicating with the ejection orifice, the method including: (1) forming a resin layer having a flow path mold pattern, on the substrate; (2) adding a hydrophilizing material represented by Chemical Formula 1 to an entire surface layer of the resin layer; (3) forming a covering resin layer serving as the flow path forming member, on the resin layer and forming a compatible layer containing the resin layer, the covering resin layer and the hydrophilizing material, at an interface between the resin layer and the covering resin layer; (4) forming the ejection orifice by exposing the covering resin layer; and (5) forming a flow path by removing the resin layer.

Method for manufacturing liquid ejection head and liquid ejection head

A hydrophilic coating material including an alginate compound having a bond with a silane compound is used. The material is produced by reacting a water-soluble alginate compound and a silane compound and then by adding a divalent metal ion to an alginic acid-derived carboxyl group in the reaction product.

Hydrophilic coating material, method for producing the same and inkjet recording head

A liquid discharge head including: a substrate having a liquid supply port; a flow channel forming member that is provided on the substrate and has discharge ports for discharging a liquid and a liquid flow channel that makes the liquid supply port and the discharge ports communicate with each other; and a support member that is provided on the substrate and arranged to be in contact with at least one surface of the flow channel forming member, with the one surface not being in contact with the liquid, wherein the flow channel forming member includes a cured product of a first photosensitive resin composition including a photosensitive resin, the support member includes a cured product of a second photosensitive resin composition including the epoxy resin A having a structure represented by formula (a1) or (a2) below in main chain structure: where, nand nrepresent integers of at least 2.

Liquid discharge head and method for manufacturing liquid discharge head

A liquid discharge head comprising a substrate comprising a liquid feeding port and an energy generating element for liquid discharge, and a flow channel member comprising, on the substrate, a discharge port through which a liquid is discharged and a liquid flow channel communicating with both the liquid feeding port and the discharge port, wherein the flow channel member comprises a flow channel member () not comprising a surface in contact with the liquid and a flow channel member () comprising a surface in contact with the liquid, a film stress Sand Sof the flow channel members () and (), respectively, satisfy S&#x3c;S, a film thickness Land Lof the flow channel member () and (), respectively, in a direction perpendicular to the substrate, satisfy L&#x3c;L, and satisfying 470 MPa&#xb7;&#x3bc;m&#x3c;[L&#xd7;S+(L&#x2212;L)&#xd7;S]&#x3c;1200 MPa&#xb7;&#x3bc;m.

Liquid discharge head and method for producing liquid discharge head

A liquid discharge head is provided which has a substrate, a flow channel forming member provided on a substrate surface of the substrate and forming a flow channel of a liquid, and a discharge port forming member provided on the flow channel forming member and having a discharge port through which a liquid is discharged, wherein the discharge port forming member and the flow channel forming member are formed of materials different from each other, a thickness of the flow channel forming member is greater than a thickness of the discharge port forming member in a direction perpendicular to the substrate surface, the discharge port forming member is a cured product of a photosensitive resin composition, and the flow channel forming member contains at least one resin selected from the group consisting of a polyether amide resin, a polyether imide resin and a polyether amide-imide resin.

A hydrophilic coating material including an alginic acid compound and a resin, in which the alginic acid compound is granulated and dispersed in the resin. In a coating film using the material, it is preferred that the granulated alginic acid compound is exposed on the surface. Such a hydrophilic coating film is suitable as a hydrophilization treatment film of a nozzle face surface of an inkjet recording head.

Hydrophilic coating material, method of producing hydrophilic coating film, and inkjet recording head

A liquid ejection head includes an ejection opening member having an ejection opening through which a liquid is ejected. The ejection opening member is provided with a cured layer of a composition over the surface thereof. The composition contains (a) a condensate of a hydrolyzable silane compound having a fluorine-containing group and a hydrolyzable silane compound having a cationically polymerizable group, and (b) a compound having a cationically polymerizable group and an ethylene oxide chain.

Liquid ejection head, method for manufacturing the same, and recording method

A method for producing a liquid ejection head includes a step of providing a positive photosensitive resin layer on a substrate, a step of heat-treating the positive photosensitive resin layer on the substrate, and a step of forming a mold material having a pattern of the flow path by subjecting the heat-treated positive photosensitive resin layer on the substrate to exposure and development. In the method, the positive photosensitive resin layer includes a light absorbing agent that is nonvolatile at a temperature of the heat treatment of the positive photosensitive resin layer, the light absorbing agent has a light absorbance (a1) at a wavelength of 365 nm and an average light absorbance (a2) in a wavelength range of 280 nm or more to 330 nm or less, and an absorbance ratio A is 1.0 or less where the absorbance ratio A is the ratio a2/a1.

Method for producing liquid ejection head

Provided is a liquid-ejecting head, including a member having opened therein an ejection orifice configured to eject a liquid, in which the liquid-ejecting head has, on a side being positioned on the member and having opened therein the ejection orifice, a cured layer of a mixture containing: (a) a condensate of hydrolyzable silane compounds containing a hydrolyzable silane compound having 20 or more fluorine atoms and a hydrolyzable silane compound having a cationically polymerizable group; (b) a fluorine atom-containing nonionic surfactant; and (c) an epoxy resin.

Liquid-ejecting head and method of manufacturing the liquid-ejecting head

A method of manufacturing a liquid ejection head, and the method includes a process of providing a first photosensitive resin layer containing a photodegradable positive photosensitive resin and serving as a mold material of the channel on a substrate, a process of providing a gas barrier layer having a film density of 1 g/cmor more on the first photosensitive resin layer, a process of subjecting the first photosensitive resin layer and the gas barrier layer to pattern exposure, and then performing development to thereby form the mold material of a channel and also removing the gas barrier layer before or simultaneously with the development, a process of providing a second photosensitive resin layer on the mold material and the substrate, a process of subjecting the second photosensitive resin layer to pattern exposure, and then performing development, and a process of removing the mold material of the channel.

Method of manufacturing liquid ejection head

A process for forming a hydrophilic coating and a hydrophilic coating, the process including the steps of: (1) forming, on a substrate, a first coating resin layer including a first cationic polymerization resin and a first photoacid generator; (2) laminating, on the first coating resin layer, a second coating resin layer including a second cationic polymerization resin which includes an acid-cleavable linkage in its main chain, and a second photoacid generator which generates methide acid by irradiation with an active energy ray including ultraviolet light; (3) forming a coating by curing the first coating resin layer and the second coating resin layer through exposure of the first coating resin layer and the second coating resin layer to the active energy ray to conduct development; and (4) forming a hydrophilic coating by hydrophilizing a surface of the coating through heat treatment of the coating.

Process for forming a hydrophilic coating and hydrophilic coating, and process for forming an ink jet recording head and ink jet recording head

Provided is a method of manufacturing a liquid ejection head, including: forming a covering resin layer including a photocationic polymerization initiator and a cationically polymerizable resin on a substrate having provided thereon an energy generating element for generating energy for ejecting liquid and a solid layer which is formed of a positive resist and serves as a pattern for a liquid flow path which communicates with a liquid ejection orifice for ejecting the liquid; exposing the covering resin layer to development to form the liquid ejection orifice; and removing the solid layer to form the liquid flow path, in which the covering resin layer includes, as a cationic polymerization inhibitor, an amine compound having a perfluoroalkyl group. Also provided is a liquid ejection head obtained by the method.

Method of manufacturing a liquid ejection head and liquid ejection head

There is provided a method for manufacturing a liquid ejection head having a substrate and a channel-forming member having an ejection port from which a liquid is ejected, the method including forming a negative photosensitive resin layer on or above the substrate; forming a lens layer on the negative photosensitive resin layer, the lens layer having a lens; exposing the negative photosensitive resin layer through the lens to form an ejection port in the negative photosensitive resin layer; and removing the lens layer.

Method for manufacturing liquid ejection head

A process for forming a hydrophilic coating, including (1) forming, on a substrate, coating resin layer including a cationic polymerization resin having an acid-cleavable linkage in its main chain, and a photoacid generator which generates antimonic acid or an acid having a weaker acid strength than that of antimonic acid by irradiation with active energy ray including ultraviolet light; (2) laminating, on the resin layer, a photoacid generator holding layer including a photoacid generator which generates an acid having a stronger acid strength than that of antimonic acid by irradiation with the energy ray, and a holder which holds the photoacid generator and can be removed in step (3); (3) removing the holding layer and curing the resin layer through exposure of those layers to the energy ray to conduct development; and (4) forming a hydrophilic coating by hydrophilizing a surface of the resin layer through heat treatment thereof.

Growing community of inventors

Suntou-gun, Japan

Kazunari Ishizuka