Patents by Inventor Toshiaki Kurosu
Toshiaki Kurosu 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: 8888245Abstract: A liquid ejection head includes a silicon substrate and an orifice plate disposed on or above the silicon substrate. The silicon substrate has a concave portion formed therein, and the orifice plate is disposed in the concave portion.Type: GrantFiled: July 23, 2013Date of Patent: November 18, 2014Assignee: Canon Kabushiki KaishaInventors: Toshiaki Kurosu, Kazumasa Matsushita, Satoshi Ibe, Yoshinori Tagawa
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Publication number: 20140313261Abstract: A liquid ejection head includes: a substrate which has an energy-generating element that generates energy to be utilized for ejecting a liquid, and a supply orifice for supplying the liquid to the energy-generating element; and an ejection orifice forming member that has a plurality of ejection orifices through which the liquid is ejected, and at least one beam-like projection which projects toward the substrate and extends along an array direction of the ejection orifices at a position corresponding to the supply orifice; wherein a sectional area perpendicular to the array direction of the ejection orifices in the central part of the beam-like projection in the array direction of the ejection orifices is larger than a sectional area in the direction perpendicular to the array direction of the ejection orifices in both ends of the beam-like projection in the array direction.Type: ApplicationFiled: March 28, 2014Publication date: October 23, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Masataka NAGAI, Yoshinori Tagawa, Jun Yamamuro, Kenji Fujii, Mitsuru Chida, Makoto Watanabe, Toshiaki Kurosu, Takanobu Manabe
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Publication number: 20140292937Abstract: An ink jet recording head includes a substrate having a plurality of discharge energy generation elements and having an ink supply port, a protective film provided on the substrate and configured to protect wiring connected to the discharge energy generation elements, and an ink discharge port forming member, wherein the protective film has a protruding portion, wherein the ink discharge port forming member has a beam-like protrusion, wherein the beam-like protrusion has a reinforcing rib, and wherein a separation film containing gold is formed at a portion where the protruding portion and the reinforcing rib are held in close contact with each other.Type: ApplicationFiled: March 31, 2014Publication date: October 2, 2014Inventors: Mitsuru Chida, Kenji Fujii, Makoto Watanabe, Toshiaki Kurosu, Masataka Nagai, Takanobu Manabe
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Publication number: 20140293259Abstract: A method of making a nozzle chip includes a step of reduction-projection-exposing a photosensitive resin material to exposure light through a mask by using a reduction-projection-exposure apparatus, the mask having a light-transmitting pattern formed thereon; and a step of forming an ejection orifice pattern corresponding to the light-transmitting pattern on the photosensitive resin material by performing a developing operation. The exposure light in the step of reduction-projection-exposing is passed through a correction mechanism before the exposure light reaches the photosensitive resin material, the correction mechanism being configured to suppress an inclination of a chief ray due to off-axis telecentricity that occurs in the reduction-projection-exposure apparatus.Type: ApplicationFiled: March 28, 2014Publication date: October 2, 2014Inventors: Takanobu Manabe, Toshiaki Kurosu, Makoto Watanabe, Masataka Nagai, Hiroyuki Murayama
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Publication number: 20140212998Abstract: A process for producing a semiconductor chip having a substrate and a bump formed on the substrate including (1) forming, on a substrate, a conductor gold for plating to be a base of plating growth; (2) forming a mask for plating on the conductor gold for plating; (3) performing plating using the mask for plating to form the bump and a dummy pattern; (4) removing the mask for plating; (5) etching the conductor gold for plating; and (6) applying a shock to at least the dummy pattern. The amount of side etching of the conductor gold for plating is grasped from a state of separation of the dummy pattern due to the shock in the step (6).Type: ApplicationFiled: January 10, 2014Publication date: July 31, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Kenji Fujii, Mitsuru Chida, Makoto Watanabe, Toshiaki Kurosu, Masataka Nagai, Takanobu Manabe
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Publication number: 20140028757Abstract: A liquid ejection head includes a silicon substrate and an orifice plate disposed on or above the silicon substrate. The silicon substrate has a concave portion formed therein, and the orifice plate is disposed in the concave portion.Type: ApplicationFiled: July 23, 2013Publication date: January 30, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Toshiaki Kurosu, Kazumasa Matsushita, Satoshi Ibe, Yoshinori Tagawa
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Patent number: 8580483Abstract: The present disclosure provides a method of making a nozzle chip including a step of forming an ejection orifice row by performing irradiation with light rays using a mask having ejection orifice row patterns that form an ejection orifice row pattern of one nozzle chip when the ejection orifice row patterns are connected to each other through a connection portion. The mask is configured such that, with respect to a direction in which ejection orifices of the ejection orifice row are arranged, an absolute value of off-axis telecentricity of one of the light rays with which an ejection orifice that is at the smallest distance from the connection portion is irradiated is less than an absolute value of off-axis telecentricity of one of the light rays with which an ejection orifice that is at the greatest distance from the connection portion is irradiated.Type: GrantFiled: December 7, 2012Date of Patent: November 12, 2013Assignee: Canon Kabushiki KaishaInventors: Takanobu Manabe, Toshiaki Kurosu, Makoto Watanabe, Kenji Fujii, Yoshinori Tagawa, Kazuhiro Asai
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Patent number: 8544997Abstract: Provided is a liquid ejection head, including: an ejection orifice forming member having an ejection orifice for ejecting liquid; a substrate having a supply port for supplying the liquid to the ejection orifice; and a filter disposed at a position upstream of the ejection orifice when the liquid is supplied to the ejection orifice, in which the filter includes an opening having a diameter smaller than or equal to a diameter of the ejection orifice, and a tapered shape structure disposed at a position upstream of the opening when the liquid is supplied to the ejection orifice, the tapered shape structure having a distal end directed toward an upstream side.Type: GrantFiled: March 15, 2012Date of Patent: October 1, 2013Assignee: Canon Kabushiki KaishaInventors: Toshiaki Kurosu, Koji Sasaki, Kouji Hasegawa, Satoshi Ibe, Yoshinori Tagawa
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Patent number: 8434850Abstract: A liquid discharge head having a liquid discharge head substrate including an element row in which a plurality of energy generating elements for generating thermal energy for use in discharging liquid are arranged, and a discharge port member corresponding to each of the plurality of energy generating elements, the discharge port members including a plurality of walls in contact with the liquid discharge head substrate to form a plurality of liquid chambers for storing liquid and a plurality of discharge ports which communicate with each of the plurality of the liquid chambers to discharge liquid with the thermal energy generated by the energy generating element. The liquid discharge head further includes a plurality of heat dissipating members corresponding to each of the plurality of the liquid chambers and having a first portion exposed to the liquid chamber and a second portion exposed to the atmosphere.Type: GrantFiled: September 15, 2011Date of Patent: May 7, 2013Assignee: Canon Kabushiki KaishaInventors: Satoshi Ibe, Hiroto Komiyama, Toshiaki Kurosu, Kouji Hasegawa, Koji Sasaki
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Patent number: 8388106Abstract: An ink discharge head includes a coating resin layer having a plurality of discharge ports for discharging ink, and ink flow passages which communicate with the plurality of discharge ports, respectively; and a substrate having energy generation elements which generate the energy for discharging ink and provided with the coating resin layer. A crack inducing portion for relieving the stress produced at the interface between the coating resin layer and the substrate is formed at lateral faces of the outer peripheral edge of the coating resin layer.Type: GrantFiled: November 30, 2010Date of Patent: March 5, 2013Assignee: Canon Kabushiki KaishaInventors: Toshiaki Kurosu, Satoshi Ibe, Kazuhiro Asai, Yoshinori Tagawa
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Patent number: 8388099Abstract: An ink jet recording head includes a coating resin layer including a plurality of ejection outlets for ejecting ink and a plurality of ink flow passages communicating with the plurality of ejection outlets; a substrate provided with an energy generating element for generating energy for ejecting the ink; and an adhesiveness-improving layer, provided between the coating resin layer and the substrate, for improving adhesiveness between the coating resin layer and the substrate. The adhesiveness-improving layer has a thickness so as to be larger at an end portion of the substrate than that at a portion other than the end portion.Type: GrantFiled: July 8, 2010Date of Patent: March 5, 2013Assignee: Canon Kabushiki KaishaInventors: Hiroyuki Murayama, Yoshinori Tagawa, Toshiaki Kurosu
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Patent number: 8377364Abstract: The invention discloses a method of manufacturing a microneedle including the steps of forming an island etching mask having thickness distribution on a substrate, and processing the substrate into a needle by taking advantage of a difference in etching rates between the etching mask and the substrate. The invention enables to readily control a point angle and height of the manufactured needle.Type: GrantFiled: March 29, 2010Date of Patent: February 19, 2013Assignee: Toppan Printing Co., Ltd.Inventors: Kazuhiko Shiomitsu, Hiroshi Sugimura, Toshiaki Kurosu, Gaku Suzuki, Takao Tomono
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Patent number: 8286351Abstract: There is disclosed a manufacturing method of a liquid discharge head including a substrate in which a first energy generating element and a second energy generating element that generate energy used for discharging liquid are provided, a discharge port member in which a first discharge port discharging the liquid is provided corresponding to the first energy generating element and a second discharge port discharging the liquid is provided corresponding to the second energy generating element, and a flow path wall member having a portion of the liquid flow path wall that communicates with the first discharge port and the second discharge port, in which a distance between the second energy generating element and the second discharge port is larger than that between the first energy generating element and the first discharge port.Type: GrantFiled: January 3, 2011Date of Patent: October 16, 2012Assignee: Canon Kabushiki KaishaInventors: Keiji Edamatsu, Yoshinori Tagawa, Kazuhiro Asai, Satoshi Ibe, Hiroto Komiyama, Toshiaki Kurosu, Masataka Nagai
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Publication number: 20120242747Abstract: Provided is a liquid ejection head, including: an ejection orifice forming member having an ejection orifice for ejecting liquid; a substrate having a supply port for supplying the liquid to the ejection orifice; and a filter disposed at a position upstream of the ejection orifice when the liquid is supplied to the ejection orifice, in which the filter includes an opening having a diameter smaller than or equal to a diameter of the ejection orifice, and a tapered shape structure disposed at a position upstream of the opening when the liquid is supplied to the ejection orifice, the tapered shape structure having a distal end directed toward an upstream side.Type: ApplicationFiled: March 15, 2012Publication date: September 27, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Toshiaki Kurosu, Koji Sasaki, Kouji Hasegawa, Satoshi Ibe, Yoshinori Tagawa
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Patent number: 8256878Abstract: A liquid ejection head according to the present invention includes a heat-generating resistor layer, a first electrode layer, an insulating layer extending over the heat-generating resistive layers and the first electrode layer, and a second electrode layer that has a first portion which extending through the insulating layer and which is electrically connected to the first electrode layer and also has a second portion which is not in contact with the insulating layer. The second portion has a space or a piece of resin disposed between the insulating layer and the second electrode layer.Type: GrantFiled: December 11, 2009Date of Patent: September 4, 2012Assignee: Canon Kabushiki KaishaInventors: Satoshi Ibe, Yoshinori Tagawa, Kazuhiro Asai, Hiroto Komiyama, Toshiaki Kurosu, Masataka Nagai
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Publication number: 20120075386Abstract: A liquid discharge head comprises: a liquid discharge head substrate including an element row in which a plurality of energy generating elements for generating thermal energy for use in discharging liquid are arranged; and a discharge port member corresponding to each of the plurality of energy generating elements, the discharge port members including a plurality of walls in contact with the liquid discharge head substrate to form a plurality of liquid chambers for storing liquid and a plurality of discharge ports which communicate with each of the plurality of the liquid chambers to discharge liquid with the thermal energy generated by the energy generating element; and a plurality of heat dissipating members corresponding to each of the plurality of the liquid chambers and having a first portion exposed to the liquid chamber and a second portion exposed to the atmosphere.Type: ApplicationFiled: September 15, 2011Publication date: March 29, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Satoshi Ibe, Hiroto Komiyama, Toshiaki Kurosu, Kouji Hasegawa, Koji Sasaki
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Publication number: 20110167636Abstract: There is disclosed a manufacturing method of a liquid discharge head including a substrate in which a first energy generating element and a second energy generating element that generate energy used for discharging liquid are provided, a discharge port member in which a first discharge port discharging the liquid is provided corresponding to the first energy generating element and a second discharge port discharging the liquid is provided corresponding to the second energy generating element, and a flow path wall member having a portion of the liquid flow path wall that communicates with the first discharge port and the second discharge port, in which a distance between the second energy generating element and the second discharge port is larger than that between the first energy generating element and the first discharge port.Type: ApplicationFiled: January 3, 2011Publication date: July 14, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Keiji Edamatsu, Yoshinori Tagawa, Kazuhiro Asai, Satoshi Ibe, Hiroto Komiyama, Toshiaki Kurosu, Masataka Nagai
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Publication number: 20110141193Abstract: An ink discharge head includes a coating resin layer having a plurality of discharge ports for discharging ink, and ink flow passages which communicate with the plurality of discharge ports, respectively; and a substrate having energy generation elements which generate the energy for discharging ink and provided with the coating resin layer. A crack inducing portion for relieving the stress produced at the interface between the coating resin layer and the substrate is formed at lateral faces of the outer peripheral edge of the coating resin layer.Type: ApplicationFiled: November 30, 2010Publication date: June 16, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Toshiaki Kurosu, Satoshi Ibe, Kazuhiro Asai, Yoshinori Tagawa
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Publication number: 20110018933Abstract: An ink jet recording head includes a coating resin layer including a plurality of ejection outlets for ejecting ink and a plurality of ink flow passages communicating with the plurality of ejection outlets; a substrate provided with an energy generating element for generating energy for ejecting the ink; and an adhesiveness-improving layer, provided between the coating resin layer and the substrate, for improving adhesiveness between the coating resin layer and the substrate. The adhesiveness-improving layer has a thickness so as to be larger at an end portion of the substrate than that at a portion other than the end portion.Type: ApplicationFiled: July 8, 2010Publication date: January 27, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Hiroyuki Murayama, Yoshinori Tagawa, Toshiaki Kurosu
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Publication number: 20100185162Abstract: The invention discloses a method of manufacturing a microneedle including the steps of forming an island etching mask having thickness distribution on a substrate, and processing the substrate into a needle by taking advantage of a difference in etching rates between the etching mask and the substrate. The invention enables to readily control a point angle and height of the manufactured needle.Type: ApplicationFiled: March 29, 2010Publication date: July 22, 2010Applicant: Toppan Printing Co., Ltd.Inventors: Kazuhiko SHIOMITSU, Hiroshi Sugimura, Toshiaki Kurosu, Gaku Suzuki, Takao Tomono