Patents by Inventor Hyo Takahashi
Hyo Takahashi 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: 9061499Abstract: 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: GrantFiled: January 27, 2011Date of Patent: June 23, 2015Assignee: Canon Kabushiki KaishaInventors: Hyo Takahashi, Ken Ikegame, Masako Shimomura
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Patent number: 8980968Abstract: 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: GrantFiled: February 1, 2011Date of Patent: March 17, 2015Assignee: Canon Kabushiki KaishaInventors: Hyo Takahashi, Ken Ikegame, Masako Shimomura
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Patent number: 8944580Abstract: A photosensitive resin composition includes: a cation polymerizable compound; a photoacid generator having an anion portion represented by the chemical 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 equaType: GrantFiled: January 31, 2011Date of Patent: February 3, 2015Assignee: Canon Kabushiki KaishaInventors: Ken Ikegame, Masako Shimomura, Hyo Takahashi
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Patent number: 8827422Abstract: 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: GrantFiled: May 25, 2012Date of Patent: September 9, 2014Assignee: Canon Kabushiki KaishaInventors: Takuma Kodoi, Yasunori Takei, Kenji Yabe, Isamu Horiuchi, Hyo Takahashi, Ken Ikegame
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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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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: 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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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