Patents by Inventor Takeshi Okazaki
Takeshi Okazaki 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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Publication number: 20040056929Abstract: A Liquid ejecting method for ejecting liquid using a bubble, includes using a liquid ejecting head having an ejection outlet for ejecting the liquid, a bubble generating region where a bubble is generated in the liquid, a movable member which is disposed faced to the bubble generating region, and which is displaceable between a first position and a second position farther from the bubble generating region than the first position and which has a free end at a downstream side thereof; displacing the movable member from the first position to the second position by pressure based on generation of the bubble in the bubble generating region, wherein the bubble expands more to the downstream side than to the upstream side with respect to a direction toward the ejection outlet by the displacement of the movable member, thus directing the bubble toward the ejection outlet to eject the liquid through the ejection outlet; and imparting an operation to the liquid ejecting head to normalize a state of the liquid in a liquType: ApplicationFiled: September 8, 2003Publication date: March 25, 2004Applicant: CANON KABUSHIKI KASISHAInventors: Takeshi Okazaki, Toshio Kashino, Aya Yoshihira, Kiyomitsu Kudo, Yoshie Asakawa
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Patent number: 6709090Abstract: A Liquid ejecting method for ejecting liquid using a bubble, includes using a liquid ejecting head having an ejection outlet for ejecting the liquid, a bubble generating region where a bubble is generated in the liquid, a movable member which is disposed faced to the bubble generating region, and which is displaceable between a first position and a second position farther from the bubble generating region than the first position and which has a free end at a downstream side thereof; displacing the movable member from the first position to the second position by pressure based on generation of the bubble in the bubble generating region, wherein the bubble expands more to the downstream side than to the upstream side with respect to a direction toward the ejection outlet by the displacement of the movable member, thus directing the bubble toward the ejection outlet to eject the liquid through the ejection outlet; and imparting an operation to the liquid ejecting head to normalize a state of the liquid in a liquType: GrantFiled: September 20, 1996Date of Patent: March 23, 2004Assignee: Canon Kabushiki KaishaInventors: Takeshi Okazaki, Toshio Kashino, Aya Yoshihira, Kiyomitsu Kudo, Yoshie Asakawa
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Patent number: 6688720Abstract: An ink jet recording head includes a plurality of recording elements arranged in an array on a substrate, the recording elements having electric resistances with a variance not less than 4% from a resistance value of at least one of the recording elements, wherein the recording elements generate ink ejection energy to effect printing; a plurality of measuring elements, disposed adjacent at least each of the opposite ends of the array of the recording elements, for detesting characteristic values of the recording elements; and a storing section for storing an average, a median or a reference value corresponding thereto.Type: GrantFiled: July 2, 2001Date of Patent: February 10, 2004Assignee: Canon Kabushiki KaishaInventors: Yoshiyuki Imanaka, Takeshi Okazaki, Teruo Ozaki, Muga Mochizuki
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Publication number: 20030236102Abstract: A portable electronic apparatus includes a display part that displays information, and an approximately pipe-shaped protective part, provided around and thicker than the display part, which protects the display part by positioning the display part at a depressed portion from the protective part.Type: ApplicationFiled: June 4, 2003Publication date: December 25, 2003Applicant: FUJITSU LIMITEDInventors: Osamu Kawai, Satoshi Watanabe, Shigeo Iriguchi, Takeshi Okazaki, Masayuki Ozawa, Akio Munakata
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Patent number: 6663230Abstract: A liquid ejection head includes an ejection outlet for ejecting liquid; a bubble generating region for generating a bubble; a movable member disposed faced to the bubble generating region and movable between a first position and a second position which is farther form the bubble generating region than the first position; a liquid supply passage for supplying the liquid to the bubble generating region from upstream of the bubble generating region; an opening, in fluid communication with the supply passage, for discharging the liquid.Type: GrantFiled: November 12, 2002Date of Patent: December 16, 2003Assignee: Canon Kabushiki KaishaInventors: Yoshie Asakawa, Toshio Kashino, Takeshi Okazaki, Aya Yoshihira, Kiyomitsu Kudo
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Patent number: 6652076Abstract: A liquid ejecting method for ejecting liquid by generation of a bubble includes preparing a head comprising an ejection outlet for ejecting the liquid, a bubble generation region for generating the bubble in the liquid, a movable member disposed faced to the bubble generation region and displaceable between a first position and a second position further from the bubble generation region than the first position; and displacing the movable member from the first position to the second position by pressure produced by the generation of the bubble in the bubble generating portion to permit expansion of the bubble more in a downstream side nearer to the ejection outlet than in an upstream side.Type: GrantFiled: July 5, 2002Date of Patent: November 25, 2003Assignee: Canon Kabushiki KaishaInventors: Yoshie Nakata, Hiroshi Sugitani, Masami Ikeda, Makiko Kimura, Toshio Kashino, Takeshi Okazaki, Aya Yoshihira, Kiyomitsu Kudo
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Publication number: 20030193456Abstract: At least one light-emitting diode emitting a light, and a front panel provided at a position forward in a traveling direction of the light emitted from the light-emitting diode, form a display device. In this display device, the front panel is so shaped as to protrude in the traveling direction of the light. An embossed portion diffusing the light emitted from the light-emitting diode is formed on the front panel.Type: ApplicationFiled: November 13, 2002Publication date: October 16, 2003Applicant: FUJITSU LIMITEDInventor: Takeshi Okazaki
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Publication number: 20030174188Abstract: A Liquid ejecting method for ejecting liquid using a bubble, includes using a liquid ejecting head having an ejection outlet for ejecting the liquid, a babble generating region where a bubble is generated in the liquid, a movable member which is disposed faced to the bubble generating region, and which is displaceable between a first position and a second position farther from the bubble generating region than the first position and which has a free end at a downstream side thereof; displacing the movable member from the first position to the second position by pressure based on generation of the bubble in the bubble generating region, wherein the bubble expands more to the downstream side than to the upstream side with respect to a direction toward the ejection outlet by the displacement of the movable member, thus directing the bubble toward the ejection outlet to eject the liquid through the ejection outlet, and imparting an operation to the liquid ejecting head to normalize a state of the liquid in a liquType: ApplicationFiled: September 20, 1996Publication date: September 18, 2003Inventors: TAKESHI OKAZAKI, TOSHIO KASHINO, AYA YOSHIHIRA, KIYOMITSU KUDO, YOSHIE ASAKAWA
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Patent number: 6595626Abstract: A liquid ejecting head for ejecting liquid by generation of bubble includes an ejection outlet for ejecting the liquid; a liquid path in fluid communication with the ejection outlet; a bubble generation region for generating the bubble in the liquid; a movable member having a fulcrum and a free end and disposed faced to the bubble generation region; wherein the movable member moves from the first position to the second position by pressure produced by the generation of the bubble, and a resistance against movement of the movable member, is smaller adjacent the free end than adjacent the fulcrum.Type: GrantFiled: June 15, 2001Date of Patent: July 22, 2003Assignee: Canon Kabushiki KaishaInventors: Kiyomitsu Kudo, Hiroshi Sugitani, Masami Ikeda, Makiko Kimura, Toshio Kashino, Takeshi Okazaki, Aya Yoshihira, Yoshie Nakata
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Patent number: 6582065Abstract: A liquid ejection method including the steps of preparing a head comprising an ejection outlet, a bubble generation region, a movable member faced to the bubble generation region and displaceable from a first position to a second position further from the bubble generation region than the first position; displacing the movable member from the first position to the second position by pressure produced by the generation of the bubble to permit greater expansion of the bubble downstream as compared to upstream; and supplying a driving pulse to generate each bubble, wherein the pulse is divided into a first pulse for pre-heating the liquid and a second pulse for ejecting the liquid.Type: GrantFiled: December 8, 2000Date of Patent: June 24, 2003Assignee: Canon Kabushiki KaishaInventors: Takeshi Okazaki, Toshio Kashino, Hiroshi Tajika, Kouichi Omata, Aya Yoshihira, Kiyomitsu Kudo, Masao Kato, Yoshie Asakawa, Hitoshi Tsuboi
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Publication number: 20030085963Abstract: A liquid ejection head includes an ejection outlet for ejecting liquid; a bubble generating region for generating a bubble; a movable member disposed faced to the bubble generating region and movable between a first position and a second position which is farther form the bubble generating region than the first position; a liquid supply passage for supplying the liquid to the bubble generating region from upstream of the bubble generating region; an opening, in fluid communication with the supply passage, for discharging the liquid.Type: ApplicationFiled: November 12, 2002Publication date: May 8, 2003Applicant: Canon Kabushiki KaishaInventors: Yoshie Asakawa, Toshio Kashino, Takeshi Okazaki, Aya Yoshihira, Kiyomitsu Kudo
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Patent number: 6505915Abstract: A liquid ejection head includes an ejection outlet for ejecting liquid; a bubble generating region for generating a bubble; a movable member disposed faced to the bubble generating region and movable between a first position and a second position which is farther form the bubble generating region than the first position; a liquid supply passage for supplying the liquid to the bubble generating region from upstream of the bubble generating region; an opening, in fluid communication with the supply passage, for discharging the liquid.Type: GrantFiled: September 20, 1996Date of Patent: January 14, 2003Assignee: Canon Kabushiki KaishaInventors: Yoshie Asakawa, Toshio Kashino, Takeshi Okazaki, Aya Yoshihira, Kiyomitsu Kudo
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Publication number: 20030001930Abstract: A liquid ejecting method for ejecting liquid by generation of a bubble includes preparing a head comprising an ejection outlet for ejecting the liquid, a bubble generation region for generating the bubble in the liquid, a movable member disposed faced to the bubble generation region and displaceable between a first position and a second position further from the bubble generation region than the first position; and displacing the movable member from the first position to the second position by pressure produced by the generation of the bubble in the bubble generating portion to permit expansion of the bubble more in a downstream side nearer to the ejection outlet than in an upstream side.Type: ApplicationFiled: July 5, 2002Publication date: January 2, 2003Inventors: Yoshie Nakata, Hiroshi Sugitani, Masami Ikeda, Makiko Kimura, Toshio Kashino, Takeshi Okazaki, Aya Yoshihira, Kiyomitsu Kudo
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Patent number: 6499823Abstract: An ink jet recording head includes a substrate having an element surface provided with energy generating elements, a ceiling plate provided with a grooved surface having grooves to become ink passages, the grooved surface and the element surface being bonded to form the ink passages, a base plate for supporting the substrate from the side opposite the element surface, and an ink supply member in contact with the base plate at a contact portion and having an ink flow path wall face to be communicated with the ink passage. The base plate and the ink supply member pinch the substrate and the ceiling plate at the contact portion as a fulcrum so as to enable the base plate to press the substrate from the side opposite the element surface, and the ink supply member to press the ceiling plate from the side opposite the grooved surface.Type: GrantFiled: June 12, 2001Date of Patent: December 31, 2002Assignee: Canon Kabushiki KaishaInventors: Takeshi Okazaki, Shunichi Watanabe, Koichi Omata, Hirotaka Miyazaki, Ryo Shimamura
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Patent number: 6488365Abstract: A liquid discharging head includes a discharge port for discharging liquid, a liquid passage communicated with the discharge port, a bubble generating area for generating a bubble in the liquid in the liquid passage, the bubble generating area including a heater for heating the liquid in the liquid passage, and a movable member disposed in a confronting relation to the bubble generating area in the liquid passage and adapted to be shifted by pressure caused by generating the bubble at the bubble generating area to direct the pressure toward the discharge port and to be returned to its initial position by negative pressure due to contraction of the bubble, and wherein resistance of the movable member against the liquid in the liquid passage when it is shifted is smaller than that when it is returned.Type: GrantFiled: June 9, 1997Date of Patent: December 3, 2002Assignee: Canon Kabushiki KaishaInventors: Kiyomitsu Kudo, Yutaka Koizumi, Sadayuki Sugama, Kiyomi Aono, Tsutomu Abe, Hiroyuki Ishinaga, Toshio Kashino, Seiichiro Karita, Takeshi Okazaki, Kouichi Omata, Masahiko Kubota, Hiroki Tajima, Aya Yoshihira, Yoshie Asakawa
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Patent number: 6474791Abstract: There is disclosed a liquid discharging method and apparatus in which a bubble is formed and grown in the liquid communicated with atmosphere at an area of a discharge opening, and in which a movable member having a free end which guides the bubble toward the discharge opening while regulating growth of the bubble.Type: GrantFiled: January 26, 2001Date of Patent: November 5, 2002Assignee: Canon Kabushiki KaishaInventors: Hiroyuki Ishinaga, Sadayuki Sugama, Toshio Kashino, Takeshi Okazaki, Aya Yoshihira, Kiyomitsu Kudo, Yoshie Asakawa
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Patent number: 6467890Abstract: An ink jet cartridge comprises an ink jet head unit for discharging the ink, and an ink tank unit having an ink supply port for supplying the ink to the ink jet head unit. The ink tank unit has a partition portion for partitioning between an ink storing portion for storing the ink to be supplied to the ink jet head unit and a negative pressure generating member receiving portion having a negative pressure generating member. The ink supply port is provided on the negative pressure generating member receiving portion. The partition portion has an ink communicating portion at an end portion of the partitioning portion on the side of the negative pressure generating member receiving portion where the ink supply port is provided, and makes contiguous the ink storing portion and the negative pressure generating member receiving portion in a movement direction of the ink tank unit when discharging the ink.Type: GrantFiled: August 14, 1996Date of Patent: October 22, 2002Assignee: Canon Kabushiki KaishaInventors: Hiroki Tajima, Toshio Kashino, Masahiko Higuma, Takeshi Okazaki
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Patent number: 6435669Abstract: A liquid ejecting method for ejecting liquid by generation of a bubble includes preparing a head comprising an ejection outlet for ejecting the liquid, a bubble generation region for generating the bubble in the liquid, a movable member disposed faced to the bubble generation region and displaceable between a first position and a second position further from the bubble generation region than the first position; and displacing the movable member from the first position to the second position by pressure produced by the generation of the bubble in the bubble generating portion to permit expansion of the bubble more in a downstream side nearer to the ejection outlet than in an upstream side.Type: GrantFiled: October 23, 2000Date of Patent: August 20, 2002Assignee: Canon Kabushiki KaishaInventors: Yoshie Nakata, Hiroshi Sugitani, Masami Ikeda, Makiko Kimura, Toshio Kashino, Takeshi Okazaki, Aya Yoshihira, Kiyomitsu Kudo
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Patent number: 6431696Abstract: An ink jet cartridge includes an ink jet head unit for discharging the ink, and an ink tank unit having an ink supply port for supplying the ink to the ink jet head unit. The ink tank unit has a partition portion for partitioning between an ink storing portion for storing the ink to be supplied to the ink jet head unit and a negative pressure generating member receiving portion having a negative pressure generating member. The ink supply port is provided on the negative pressure generating member receiving portion. The portion has an ink communicating portion at an end portion of the partitioning portion on the side of the negative pressure generating member receiving portion where the ink supply port is provided, and makes contiguous the ink storing portion and the negative pressure generating member receiving portion in a movement direction of the ink tank unit when discharging the ink.Type: GrantFiled: November 12, 1998Date of Patent: August 13, 2002Assignee: Canon Kabushiki KaishaInventors: Hiroki Tajima, Toshio Kashino, Masahiko Higuma, Takeshi Okazaki
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Publication number: 20020085064Abstract: A liquid ejection head includes an ejection outlet for ejecting liquid; a bubble generating region for generating a bubble; a movable member disposed faced to the bubble generating region and movable between a first position and a second position which is farther form the bubble generating region than the first position; a liquid supply passage for supplying the liquid to the bubble generating region from upstream of the bubble generating region; an opening, in fluid communication with the supply passage, for discharging the liquid.Type: ApplicationFiled: September 20, 1996Publication date: July 4, 2002Inventors: YOSHIE NAKATA, TOSHIO KASHINO, TAKESHI OKAZAKI, AYA YOSHIHIRA, KIYOMITSU KUDO