Patents by Inventor Ken Ikegame
Ken Ikegame has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8703398Abstract: The manufacturing method includes forming, on a surface of a negative photosensitive resin layer formed on a substrate, a hollow having inclinations at both sides in a cross section taken along a plane perpendicular to a row direction of the ejection orifice, and then forming a latent image in the hollow, thereby forming the ejection orifice so that an angle between a side surface portion thereof and a normal to the outer opening in a cross section of the ejection orifice taken along a plane which passes through a center of the ejection orifice and is perpendicular to the row direction is larger than an angle between the side surface portion and the normal to the outer opening in a cross section of the ejection orifice taken along a plane which includes a center line of the ejection orifice in the row direction and is perpendicular to a substrate surface.Type: GrantFiled: March 12, 2013Date of Patent: April 22, 2014Assignee: Canon Kabushiki KaishaInventors: Ken Ikegame, Isamu Horiuchi, Hyo Takahashi, Takuma Kodoi, Yasunori Takei, Kenji Yabe
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Patent number: 8673546Abstract: 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.Type: GrantFiled: October 25, 2011Date of Patent: March 18, 2014Assignee: Canon Kabushiki KaishaInventors: Kazunari Ishizuka, Ken Ikegame, Shoji Shiba
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Publication number: 20140030659Abstract: A liquid ejection head is manufactured by forming a dent representing a substantially spherical profile so as to include a position for forming an ejection port on a surface of a photosensitive resin layer, then forming a latent image of the ejection port in the dent by an exposure treatment using a projection lens system, and developing the latent image. The center of the top surface of the latent image is shifted to the incoming side of the beam of exposure light from the lowest point of the dent.Type: ApplicationFiled: July 11, 2013Publication date: January 30, 2014Inventors: Takuma Kodoi, Yasunori Takei, Kenji Yabe, Isamu Horiuchi, Hyou Takahashi, Ken Ikegame
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Publication number: 20130323650Abstract: 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.Type: ApplicationFiled: May 20, 2013Publication date: December 5, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Isamu Horiuchi, Hiroaki Mihara, Kazunari Ishizuka, Ken Ikegame
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Publication number: 20130286098Abstract: Provided is a liquid discharge head including: a discharge port that serves to discharge a liquid; a discharge energy generating element that generates energy used to discharge the liquid; a foam chamber that houses the discharge energy generating element and is communicated with the discharge port; and a flow channel that is communicated with the foam chamber and serves to supply the liquid to the foam chamber. An inclined surface is formed between: a side wall of the foam chamber on a side opposite to the flow channel; and a surface of the foam chamber on which the discharge port is formed, and the inclined surface is inclined to a plane on which the discharge energy generating element is formed.Type: ApplicationFiled: April 17, 2013Publication date: October 31, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Kenji Yabe, Yasunori Takei, Takuma Kodoi, Ken Ikegame, Isamu Horiuchi, Hyo Takahashi
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Publication number: 20130266901Abstract: The manufacturing method includes forming, on a surface of a negative photosensitive resin layer formed on a substrate, a hollow having inclinations at both sides in a cross section taken along a plane perpendicular to a row direction of the ejection orifice, and then forming a latent image in the hollow, thereby forming the ejection orifice so that an angle between a side surface portion thereof and a normal to the outer opening in a cross section of the ejection orifice taken along a plane which passes through a center of the ejection orifice and is perpendicular to the row direction is larger than an angle between the side surface portion and the normal to the outer opening in a cross section of the ejection orifice taken along a plane which includes a center line of the ejection orifice in the row direction and is perpendicular to a substrate surface.Type: ApplicationFiled: March 12, 2013Publication date: October 10, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Ken Ikegame, Isamu Horiuchi, Hyo Takahashi, Takuma Kodoi, Yasunori Takei, Kenji Yabe
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Publication number: 20130235119Abstract: The invention provides a photosensitive negative resin composition containing (a) an epoxy-group-containing compound, (b) a first onium salt containing a cation portion structure represented by (b1) and an anion portion structure represented by (b2), and (c) a second onium salt containing a cation portion structure represented by (c1) and an anion portion structure represented by (c2).Type: ApplicationFiled: December 2, 2011Publication date: September 12, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Hyou Takahashi, Masako Shimomura, Ken Ikegame
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Patent number: 8528209Abstract: A method for manufacturing a discharge port member used in a liquid discharge head, comprising in the following order, preparing a substrate at least whose surface is conductive, the substrate having, formed on said surface, a first insulating resist for forming a discharge port and a second insulating resist for forming a recessed portion of a wall of a flow path, forming on surface a first plating layer by plating using said first resist and said second resist as a mask, removing said second resist, forming a second plating layer on an exposed portion of said substrate from which said second resist has been removed, said second plating layer being formed by plating using said first resist as a mask, said second plating layer forming said recessed portion of said wall, and removing said first resist to form said discharge port and removing said substrate.Type: GrantFiled: November 10, 2010Date of Patent: September 10, 2013Assignee: Canon Kabushiki KaishaInventors: Ken Ikegame, Hiroaki Mihara
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Patent number: 8499453Abstract: There is provided a method of manufacturing a liquid discharge head having a substrate including energy generating elements, and a discharge port member, which is provided with discharge ports and is joined to the substrate, thereby forming liquid flow paths communicating with the discharge ports. The method includes, in the following order, preparing a conductive base on which a first insulating resist and a second insulating resist for forming the discharge ports are stacked in this order; performing plating using the first resist and the second resist as masks, and forming a first plated layer; removing the second resist; performing plating on the base using the first resist as a mask, thereby forming a second plated layer so as to cover the first plated layer; removing the base and the first resist, thereby forming the discharge port member; and joining together the substrate and the discharge port member.Type: GrantFiled: October 28, 2010Date of Patent: August 6, 2013Assignee: Canon Kabushiki KaishaInventors: Hiroaki Mihara, Ken Ikegame
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Publication number: 20120306961Abstract: A photosensitive resin composition includes a cationically polymerizable compound, a photoacid generating agent having an anion portion and a cation portion, and a salt having a cation portion having either one of a quaternary ammonium structure and a quaternary phosphonium structure and an anion portion, wherein the anion portion of the salt is exchanged with the anion portion of a first acid derived from the anion portion of the photoacid generating agent to form a second acid having acid strength that is lower than acid strength of the first acid.Type: ApplicationFiled: January 27, 2011Publication date: December 6, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Hyo Takahashi, Ken Ikegame, Masako Shimomura
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Publication number: 20120306969Abstract: Without being dependent on design changes, a liquid ejection head and a method of production thereof are provided in which when time-division driving, liquid drop landing deviance in the direction of printing is capable of being corrected. In order to achieve this, before performing an exposure in order to form an ejection port, after forming a cavity that is shifted with respect to the location at which the ejection port is formed, exposure is performed.Type: ApplicationFiled: May 25, 2012Publication date: December 6, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Takuma Kodoi, Yasunori Takei, Kenji Yabe, Isamu Horiuchi, Hyo Takahashi, Ken Ikegame
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Publication number: 20120292412Abstract: A photosensitive resin composition includes (a) a compound polymerizable in the presence of an acid, and (b) a photoacid generating agent including an onium salt having a cationic part structure represented by formula (b1) below and an anionic part structure represented by formula (b2) below, wherein the component (b) absorbs 50% or more of the amount of 365 nm wavelength light absorbed by the photosensitive resin composition,Type: ApplicationFiled: February 1, 2011Publication date: November 22, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Hyo Takahashi, Ken Ikegame, Masako Shimomura
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Patent number: 8268539Abstract: A method of manufacturing a liquid ejection head includes: exposing a negative organic resin layer to be a flow path forming member except for regions in which an ejection orifice and a fluid resistance portion are to be formed, respectively, and heating the negative organic resin layer and a flow path pattern to move a portion of the negative organic resin layer which corresponds to the fluid resistance portion toward a substrate; and exposing and developing the region of the negative organic resin layer in which the fluid resistance portion is to be formed.Type: GrantFiled: July 7, 2011Date of Patent: September 18, 2012Assignee: Caron Kabushiki KaishaInventors: Ken Ikegame, Isamu Horiuchi
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Publication number: 20120229556Abstract: A photosensitive resin composition includes: a cation polymerizable compound; a photoacid generator having an anion portion represented by the formula 1 and a cation portion, wherein R represents a hydrocarbon group which may be substituted with a fluorine atom and has a total carbon number of 1 to 30; X is selected from the group consisting of a carbon atom and a phosphorous atom; Y is selected from the group consisting of —S(?O)2—, —O—CF2—, —C(?O)—CF2—, —O—C(?O)—CF2—, —C(?O)—O—CF2—, and a single bond; R has at least one fluorine atom when Y is —S(?O)2— or the single bond; m and n are integers selected from the group consisting of m+n=3 and n=0, 1, and 2 when X is the carbon atom; m and n are integers selected from the group consisting of m+n=6 and n=0 to 5 when X is the phosphorous atom; and R and Y may be different from each other when m is equal to or greater than 2; and a salt of an anion portion and a cation portion, wherein an acid strength of an acid derived from the anion portion is equal to or gType: ApplicationFiled: January 31, 2011Publication date: September 13, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Ken Ikegame, Masako Shimomura, Hyo Takahashi
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Publication number: 20120115985Abstract: 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.Type: ApplicationFiled: October 25, 2011Publication date: May 10, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Kazunari Ishizuka, Ken Ikegame, Shoji Shiba
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Publication number: 20120115089Abstract: 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.Type: ApplicationFiled: October 25, 2011Publication date: May 10, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Kazunari Ishizuka, Ken Ikegame
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Patent number: 8157353Abstract: A liquid ejection recording head includes a recording element substrate including a plurality of energy generating elements for generating energy for ejecting liquid, and a flow passage-forming member, connected to the recording element substrate, comprising a plurality of ejection outlets corresponding to the plurality of energy generating elements and plurality of flow passages communicating with the ejection outlets. The flow passage-forming member includes a hole array having holes arranged so as to surround the flow passages and a communication passage, for establishing communication between adjacent holes, at a position close to the recording element substrate.Type: GrantFiled: January 15, 2009Date of Patent: April 17, 2012Assignee: Canon Kabushiki KaishaInventors: Shigeki Fukui, Ken Ikegame, Shuichi Murakami, Yasushi Iijima, Yasunori Takei
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Publication number: 20120021360Abstract: A method of manufacturing a liquid ejection head includes: exposing a negative organic resin layer to be a flow path forming member except for regions in which an ejection orifice and a fluid resistance portion are to be formed, respectively, and heating the negative organic resin layer and a flow path pattern to move a portion of the negative organic resin layer which corresponds to the fluid resistance portion toward a substrate; and exposing and developing the region of the negative organic resin layer in which the fluid resistance portion is to be formed.Type: ApplicationFiled: July 7, 2011Publication date: January 26, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Ken Ikegame, Isamu Horiuchi
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Patent number: 8061809Abstract: A liquid ejection head includes a substrate having a supply port through which liquid is supplied and a plurality of energy generating elements provided along the supply port and generating energy for ejecting the liquid, a nozzle plate having nozzles provided therein in correspondence with the energy generating elements, and a channel provided between the substrate and the nozzle plate. The nozzle plate has a groove surrounding the channel. The groove includes a first groove provided in one surface of the nozzle plate at which the nozzle plate is bonded to the substrate, and a second groove provided in another surface of the nozzle plate in which the nozzles are provided. Edges of the first groove have sawtooth shape with a number of very small notches and edges of the second groove are substantially straight.Type: GrantFiled: December 11, 2008Date of Patent: November 22, 2011Assignee: Canon Kabushiki KaishaInventors: Ken Ikegame, Shingo Nagata, Shigeki Fukui
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Patent number: 7984967Abstract: An ink jet head includes an elongated ink supply port extending in a longitudinal direction and a plurality of head groups arranged in a transverse direction crossing with the longitudinal direction. A first array of ink ejection outlets is disposed along one lateral side of an ink supply port, and second and third arrays of ink ejection outlets are disposed along the other lateral side of the ink supply port, wherein widths L2, measured in the longitudinal direction, of partition walls for the first array of the ink ejection outlets are larger than widths L1, measured in the longitudinal direction, of partition walls of the second and third arrays of the ink ejection outlets. The ink jet head further includes a sealing tape for protecting the ejection outlets, the sealing tape being peelable in a direction from the second or third array toward the first array.Type: GrantFiled: April 7, 2008Date of Patent: July 26, 2011Assignee: Canon Kabushiki KaishaInventors: Ken Ikegame, Keiichiro Tsukuda