Patents by Inventor Ryoji Kanri
Ryoji Kanri 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).
-
Publication number: 20100037460Abstract: A liquid discharge head includes a substrate having an energy generating element configured to generate energy required to discharge liquid, a discharge port configured to discharge the liquid and provided in an opposed relationship to the energy generating element, a wall member defining a chamber adapted to store the energy required to discharge liquid the energy being generated by the energy generating element, a discharge portion defining a fluid path connecting the chamber and the discharge port, a supply path facilitating supplying the liquid into the chamber, and a pair of hollow portions provided in the wall member, wherein the hollow portions oppose each other and sandwich at least the entire discharge port in a direction from the discharge port to the substrate, and the hollow portions are independent of the chamber.Type: ApplicationFiled: October 19, 2009Publication date: February 18, 2010Applicant: Canon Kabushiki KaishaInventors: Naozumi Nabeshima, Toru Yamane, Takumi Suzuki, Masahiko Kubota, Tamaki Sato, Ryoji Kanri, Maki Hatta, Kazuhiro Asai
-
Patent number: 7629111Abstract: A method for manufacturing a liquid discharge head includes the steps of depositing a solid layer for forming a flow path on a substrate on which an energy generating element is arranged to generate energy that is used to discharge liquid, forming, on the substrate where the solid layer is mounted, a coating layer for coating the solid layer, forming a discharge port used to discharge a liquid, through a photolithographic process, in the coating layer formed on the solid layer, and removing the solid layer to form a flow path that communicates with the energy element and the discharge port, whereby a material used for the coating layer contains a cationically polymerizable chemical compound, a cationic photopolymerization initiator and an inhibitor of cationic photopolymerization, and whereby a material of the solid layer that forms a boundary with a portion where the discharge port of the coating layer is formed contains a copolymer of methacrylic anhydride and methacrylate ester.Type: GrantFiled: June 27, 2005Date of Patent: December 8, 2009Assignee: Canon Kabushiki KaishaInventors: Masahiko Kubota, Takumi Suzuki, Tamaki Sato, Ryoji Kanri, Maki Hatta, Kazuhiro Asai, Shoji Shiba, Etsuko Hino, Hiroe Ishikura, Akihiko Okano
-
Patent number: 7625069Abstract: A liquid discharge head includes a substrate having an energy generating element configured to generate energy required to discharge liquid, a discharge port configured to discharge the liquid and provided in an opposed relationship to the energy generating element, a wall member defining a chamber adapted to store the energy required to discharge liquid the energy being generated by the energy generating element, a discharge portion defining a fluid path connecting the chamber and the discharge port, a supply path facilitating supplying the liquid into the chamber, and a pair of hollow portions provided in the wall member, wherein the hollow portions oppose each other and sandwich at least the entire discharge port in a direction from the discharge port to the substrate, and the hollow portions are independent of the chamber.Type: GrantFiled: October 16, 2006Date of Patent: December 1, 2009Assignee: Canon Kabushiki KaishaInventors: Naozumi Nabeshima, Toru Yamane, Takumi Suzuki, Masahiko Kubota, Tamaki Sato, Ryoji Kanri, Maki Hatta, Kazuhiro Asai
-
Patent number: 7560224Abstract: According to the present invention, there are provided an ink jet recording head capable of performing high-precision printing and recording and having a high reliability, and a method of manufacturing the head. The ink jet recording head of the present invention has: an element substrate on whose surface an ink discharge energy generating element is formed and which is made of silicon; and a thin and flat inorganic substrate in which an ink discharge port is formed in a portion disposed vertically above the ink discharge energy generating element. Furthermore, the head includes a photosensitive material layer which bonds the element substrate to the inorganic substrate and which is to constitute a wall forming an ink flow path which communicates with the ink discharge port. The inorganic substrate is laminated on the element substrate provided with the photosensitive material layer, and is thereafter provided with the ink discharge port.Type: GrantFiled: November 17, 2005Date of Patent: July 14, 2009Assignee: Canon Kabushiki KaishaInventors: Tamaki Sato, Ryoji Kanri, Masataka Kato
-
Patent number: 7513601Abstract: With the liquid discharge head, a discharge speed of liquid droplets is increased, a discharge amount of liquid droplets is stabilized, and a discharge efficiency of the liquid droplets is enhanced. A bubbling chamber has a first bubbling chamber which is connected to a supply path with a main surface of an element substrate forming a bottom surface thereof and in which bubbles are generated in ink by a heater, and a second bubbling chamber connected to the first bubbling chamber. Moreover, a nozzle has a discharge port portion including a discharge port connected to the second bubbling chamber. Assuming that an average sectional area of the first bubbling chamber is S1, an average sectional area of the second bubbling chamber is S2, and an average sectional area of the discharge port portion is S3 in sections parallel to the main surface of the element substrate, the nozzle satisfies a relation of S2>S1>S3.Type: GrantFiled: November 29, 2005Date of Patent: April 7, 2009Assignee: Canon Kabushiki KaishaInventors: Kazuhiro Asai, Masahiko Kubota, Ryoji Kanri
-
Patent number: 7452474Abstract: In order to form a more homogenous heat generating resistive layer, the present invention provides a method of manufacturing a substrate for an ink jet recording head having a support which has an insulative layer on its surface, a pair of electrode layers disposed on the surface of the support, and a heat generating resistive layer which continuously covers the pair of electrode layers and a section between the pair of electrode layers. The method includes the step of forming an electrode layer on the support and the step of forming the pair of electrode layers by etching the electrode layer. In the step of forming the pair of electrode layers by etching the electrode layer, by etching a surface portion of the insulative layer positioned between the pair of insulative layers, a recess is formed in the surface portion of the insulative layer.Type: GrantFiled: May 2, 2005Date of Patent: November 18, 2008Assignee: Canon Kabushiki KaishaInventors: Hirokazu Komuro, Teruo Ozaki, Shuji Koyama, Kousuke Kubo, Makoto Terui, Kazuhiro Hayakawa, Ryoji Kanri, Masataka Kato
-
Publication number: 20080277379Abstract: A filter capable of separating or filtering micro foreign particles in a flow passage is provided. A first mask and a second mask are formed on a silicon substrate by dry etching. Before performing the dry etching, a resist of the first mask is subjected to a heat treatment performed at a temperature equal to or higher than a glass transition point. A resist of the second mask is not subjected to such a heat treatment. This processing simultaneously forms in the substrate a groove portion and a wall having a hole that is located in the groove portion. A silicon material located beneath a wide portion of the first mask remains as a wall portion separating the holes.Type: ApplicationFiled: July 16, 2008Publication date: November 13, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Masataka Kato, Makoto Terui, Ryoji Kanri
-
Publication number: 20080227035Abstract: Provided is a method of producing an ink jet head including: providing the substrate which includes a through hole which forms the supply opening, and a layer that covers an opening of the through hole on a side of the one surface of the substrate; forming a protective film so that the protective film covers a side wall of the through hole and reaches the layer; depositing a photosensitive resin on the protective film; applying light from the side of the one surface of the substrate to pattern the photosensitive resin; and removing the protective film formed on a portion of the opening of the through hole on the side of the one surface of the substrate, with the patterned photosensitive resin being used as a mask.Type: ApplicationFiled: March 5, 2008Publication date: September 18, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Ryoji Kanri, Tamaki Sato
-
Publication number: 20070099121Abstract: According to the present invention, a method for manufacturing a liquid discharge head includes the steps of depositing a solid layer for forming a flow path on a substrate on which an energy generating element is arranged to generate energy that is used to discharge liquid, forming, on the substrate where the solid layer is mounted, a coating layer for coating the solid layer, forming a discharge port used to discharge a liquid, through a photolithographic process, in the coating layer formed on the solid layer, and removing the solid layer to form a flow path that communicates with the energy element and the discharge port, whereby a material used for the coating layer contains a cationically polymerizable chemical compound, cationic photopolymerization initiator and a inhibitor of cationic photopolymerization, and whereby a material of the solid layer that forms a boundary with a portion where the discharge port of the coating layer is formed contains a copolymer of methacrylic anhydride and methacrylate eType: ApplicationFiled: June 27, 2005Publication date: May 3, 2007Applicant: Canon Kabushiki KaishaInventors: Masahiko Kubota, Takumi Suzuki, Tamaki Sato, Ryoji Kanri, Maki Hatta, Kazuhiro Asai, Shoji Shiba, Etsuko Hino, Hiroe Ishikura, Akihiko Okano
-
Publication number: 20070091151Abstract: A liquid discharge head includes a substrate having an energy generating element configured to generate energy required to discharge liquid, a discharge port configured to discharge the liquid and provided in an opposed relationship to the energy generating element, a wall member defining a chamber adapted to store the energy required to discharge liquid the energy being generated by the energy generating element, a discharge portion defining a fluid path connecting the chamber and the discharge port, a supply path facilitating supplying the liquid into the chamber, and a pair of hollow portions provided in the wall member, wherein the hollow portions oppose each other and sandwich at least the entire discharge port in a direction from the discharge port to the substrate, and the hollow portions are independent of the chamber.Type: ApplicationFiled: October 16, 2006Publication date: April 26, 2007Applicant: CANON KABUSHIKI KAISHAInventors: Naozumi Nabeshima, Toru Yamane, Takumi Suzuki, Masahiko Kubota, Tamaki Sato, Ryoji Kanri, Maki Hatta, Kazuhiro Asai
-
Publication number: 20060277755Abstract: According to the present invention, a method for manufacturing a liquid discharge head includes the steps of: forming a solid layer for forming a flow path on a substrate on which an energy generating element is arranged to generate energy that is used to discharge liquid; forming, on the substrate where the solid layer is mounted, a coating layer for coating the solid layer; forming a discharge port used to discharge a liquid, through a photolithographic process, in the coating layer deposited on the solid layer; and removing the solid layer to form a flow path that communicates with the energy element and the discharge port, whereby a material used for the coating layer contains a cationically polymerizable chemical compound, cationic photopolymerization initiator and an inhibitor of cationic photopolymerization, and whereby a material of the solid layer that forms a boundary with a portion where the discharge port of the coating layer are formed contains a copolymer of methacrylic acid and methacrylate estType: ApplicationFiled: June 27, 2005Publication date: December 14, 2006Applicant: Canon Kabushiki KaishaInventors: Masahiko Kubota, Takumi Suzuki, Tamaki Sato, Ryoji Kanri, Maki Hatta, Kazuhiro Asai, Shoji Shiba, Etsuko Hino, Hiroe Ishikura, Akihiko Okano
-
Publication number: 20060114295Abstract: According to the present invention, a discharge speed of liquid droplets is increased, a discharge amount of liquid droplets is stabilized, and a discharge efficiency of the liquid droplets is enhanced. A bubbling chamber has: a first bubbling chamber which is connected to a supply path while a main surface of an element substrate is a bottom surface and in which bubbles are generated in ink by a heater; and a second bubbling chamber connected to the first bubbling chamber. Moreover, a nozzle has a discharge port portion including a discharge port connected to the second bubbling chamber. Assuming that an average sectional area of the first bubbling chamber is S1, an average sectional area of the second bubbling chamber is S2, and an average sectional area of the discharge port portion is S3 in a section parallel to the main surface of the element substrate, the nozzle satisfies a relation of S2>S1>S3.Type: ApplicationFiled: November 29, 2005Publication date: June 1, 2006Applicant: CANON KABUSHIKI KAISHAInventors: Kazuhiro Asai, Masahiko Kubota, Ryoji Kanri
-
Publication number: 20060109315Abstract: According to the present invention, there are provided an ink jet recording head capable of performing high-precision printing and recording and having a high reliability, and a method of manufacturing the head. The ink jet recording head of the present invention has: an element substrate on whose surface an ink discharge energy generating element is formed and which is made of silicon; and a thin and flat inorganic substrate in which an ink discharge port is formed in a portion disposed vertically above the ink discharge energy generating element. Furthermore, the head includes a photosensitive material layer which bonds the element substrate to the inorganic substrate and which is to constitute a wall forming an ink flow path which communicates with the ink discharge port. The inorganic substrate is laminated on the element substrate provided with the photosensitive material layer, and is thereafter provided with the ink discharge port.Type: ApplicationFiled: November 17, 2005Publication date: May 25, 2006Applicant: CANON KABUSHIKI KAISHAInventors: Tamaki Sato, Ryoji Kanri, Masataka Kato
-
Publication number: 20060092246Abstract: A filter capable of separating or filtering micro foreign particles in a flow passage is provided. A first mask and a second mask are formed on a silicon substrate by dry etching. Before performing the dry etching, a resist of the first mask is subjected to a heat treatment performed at a temperature equal to or higher than a glass transition point. A resist of the second mask is not subjected to such a heat treatment. This processing simultaneously forms in the substrate a groove portion and a wall having a hole that is located in the groove portion. A silicon material located beneath a wide portion of the first mask remains as a wall portion separating the holes.Type: ApplicationFiled: October 31, 2005Publication date: May 4, 2006Applicant: Canon Kabushiki KaishaInventors: Masataka Kato, Makoto Terui, Ryoji Kanri
-
Publication number: 20050248623Abstract: In order to form a more homogenous heat generating resistive layer, the present invention provides a method of manufacturing a substrate for an ink jet recording head having a support which has an insulative layer on its surface, a pair of electrode layers disposed on the surface of the support, and a heat generating resistive layer which continuously covers the pair of electrode layers and a section between the pair of electrode layers. The method includes the step of forming an electrode layer on the support and the step of forming the pair of electrode layers by etching the electrode layer. In the step of forming the pair of electrode layers by etching the electrode layer, by etching a surface portion of the insulative layer positioned between the pair of insulative layers, a recess is formed in the surface portion of the insulative layer.Type: ApplicationFiled: May 2, 2005Publication date: November 10, 2005Applicant: CANON KABUSHIKI KAISHAInventors: Hirokazu Komuro, Teruo Ozaki, Shuji Koyama, Kousuke Kubo, Makoto Terui, Kazuhiro Hayakawa, Ryoji Kanri, Masataka Kato
-
Patent number: 6953530Abstract: The invention provides a forming method of an ink jet print head substrate and an ink jet print head substrate, and a manufacturing method of an ink jet print head and an ink jet print head, in which adhesion between a substrate for forming an ink discharging pressure generating element and an ink flow path forming member is increased to increase reliability even if an ink flow path forming member is formed covering a long distance. In a forming method of an ink jet print head substrate or the like, in which an ink flow path forming member is attached onto a substrate on which an ink discharging pressure generating element is formed, minute pit is formed on an attachment region of the substrate for attaching the liquid flow path forming member.Type: GrantFiled: February 25, 2002Date of Patent: October 11, 2005Assignee: Canon Kabushiki KaishaInventor: Ryoji Kanri
-
Publication number: 20020118255Abstract: The invention provides a forming method of an ink jet print head substrate and an ink jet print head substrate, and a manufacturing method of an ink jet print head and an ink jet print head, in which adhesion between a substrate for forming an ink discharging pressure generating element and an ink flow path forming member is increased to increase reliability even if an ink flow path forming member is formed covering a long distance.Type: ApplicationFiled: February 25, 2002Publication date: August 29, 2002Inventor: Ryoji Kanri