Patents by Inventor Yoshiyuki Kurebayashi
Yoshiyuki Kurebayashi 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: 8746840Abstract: A printer includes a fluid ejecting head having a plurality of nozzles, an ink supply channel and a maintenance device. The maintenance device includes a pressure regulating mechanism configured to reduce the pressures in the interiors of the ink supply channels at a position of pressure reduction, and a tight cap being brought into abutment with the fluid ejecting head so that the nozzle openings of the nozzles which receives a supply of ink through flow channels which are subject to relatively small pressure losses first by priority according to the magnitudes of the pressure losses in the respective flow channels extending from the position of pressure reduction to the respective nozzles.Type: GrantFiled: May 20, 2011Date of Patent: June 10, 2014Assignee: Seiko Epson CorporationInventors: Yoshiyuki Kurebayashi, Yoichi Yamada
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Patent number: 8651620Abstract: There is provided a nozzle contact unit capable of realizing a contact state, where a contact surface comes into close contact with a nozzle formation surface to block a plurality of nozzle openings, and a separated state, where the contact surface is separated from the nozzle formation surface. The nozzle contact unit separates the contact surface from the nozzle formation surface to sequentially open the nozzle openings preferentially from the nozzle opening of the nozzle with a shorter flow passage length of ink flowing from a supply port to the nozzle via a common ink chamber among the plurality of nozzle openings in a procedure from the contact state to the separated state.Type: GrantFiled: June 2, 2011Date of Patent: February 18, 2014Assignee: Seiko Epson CorporationInventors: Yoichi Yamada, Yoshiyuki Kurebayashi, Masaru Kobashi
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Patent number: 8491088Abstract: A maintenance apparatus that removes bubbles from a nozzle is provided in a printer that includes a recording head having a nozzle capable of ejecting ink from a nozzle opening formed in a nozzle formation surface. The maintenance apparatus includes: a pressurizing pump that pressurizes the ink in the nozzle in a direction in which the ink is discharged from the nozzle opening; and a contact member having an upper surface that makes contact with the nozzle formation surface so as to cover the nozzle opening, and that has, formed therein, a flow channel whose pressure loss is greater than that of the nozzle and that allows air to pass through from the side of the upper surface. The ink within the nozzle is pressurized by the pressurizing pump in a state in which the contact member is in contact with the nozzle formation surface.Type: GrantFiled: May 20, 2011Date of Patent: July 23, 2013Assignee: Seiko Epson CorporationInventors: Masaru Kobashi, Yoshiyuki Kurebayashi, Yoichi Yamada
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Patent number: 8412080Abstract: A method of manufacturing a developing roller, including: a first rolling process for forming a first inclined groove which is continuous in a helical shape, by rotating a first die having blades inclined with respect to an axial direction and a circumferential direction, and a non-bladed die, and feeding an unprocessed developing roller between the first die and the non-bladed die; and a second rolling process for forming a second inclined groove which is continuous in a helical shape and intersects with the first inclined groove, by rotating a second die having blades inclined with respect to an axial direction and a circumferential direction in the direction opposite to that of the first die, and the non-bladed die in the same direction opposite to that in the first rolling process, and feeding the developing roller between the second die and the non-bladed die.Type: GrantFiled: November 18, 2009Date of Patent: April 2, 2013Assignee: Seiko Epson CorporationInventors: Masahiro Maeda, Yoichi Yamada, Yoshiyuki Kurebayashi, Daisuke Matsumoto, Masaru Kobashi, Takatomo Fukumoto
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Publication number: 20110298865Abstract: There is provided a nozzle contact unit capable of realizing a contact state, where a contact surface comes into close contact with a nozzle formation surface to block a plurality of nozzle openings, and a separated state, where the contact surface is separated from the nozzle formation surface. The nozzle contact unit separates the contact surface from the nozzle formation surface to sequentially open the nozzle openings preferentially from the nozzle opening of the nozzle with a shorter flow passage length of ink flowing from a supply port to the nozzle via a common ink chamber among the plurality of nozzle openings in a procedure from the contact state to the separated state.Type: ApplicationFiled: June 2, 2011Publication date: December 8, 2011Applicant: SEIKO EPSON CORPORATIONInventors: Yoichi Yamada, Yoshiyuki Kurebayashi, Masaru Kobashi
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Publication number: 20110298875Abstract: A maintenance apparatus that removes bubbles from a nozzle is provided in a printer that includes a recording head having a nozzle capable of ejecting ink from a nozzle opening formed in a nozzle formation surface. The maintenance apparatus includes: a pressurizing pump that pressurizes the ink in the nozzle in a direction in which the ink is discharged from the nozzle opening; and a contact member having an upper surface that makes contact with the nozzle formation surface so as to cover the nozzle opening, and that has, formed therein, a flow channel whose pressure loss is greater than that of the nozzle and that allows air to pass through from the side of the upper surface. The ink within the nozzle is pressurized by the pressurizing pump in a state in which the contact member is in contact with the nozzle formation surface.Type: ApplicationFiled: May 20, 2011Publication date: December 8, 2011Applicant: SEIKO EPSON CORPORATIONInventors: Masaru KOBASHI, Yoshiyuki KUREBAYASHI, Yoichi YAMADA
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Publication number: 20110292136Abstract: A printer includes a fluid ejecting head having a plurality of nozzles, an ink supply channel and a maintenance device. The maintenance device includes a pressure regulating mechanism configured to reduce the pressures in the interiors of the ink supply channels at a position of pressure reduction, and a tight cap being brought into abutment with the fluid ejecting head so that the nozzle openings of the nozzles which receives a supply of ink through flow channels which are subject to relatively small pressure losses first by priority according to the magnitudes of the pressure losses in the respective flow channels extending from the position of pressure reduction to the respective nozzles.Type: ApplicationFiled: May 20, 2011Publication date: December 1, 2011Applicant: SEIKO EPSON CORPORATIONInventors: Yoshiyuki KUREBAYASHI, Yoichi YAMADA
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Patent number: 7965965Abstract: Provided is a development device including: a development roller in which continuous spiraling inclined grooves having different inclinations with respect to an axial direction are formed so as to cross each other; and a feed roller which is in contact with the development roller and feeds toner to the development roller, wherein transportation force, which is used for transporting the toner on the development roller from one side to the other side of the axial direction of the development roller, is generated by the rotation of the feed roller.Type: GrantFiled: November 18, 2009Date of Patent: June 21, 2011Assignee: Seiko Epson CorporationInventors: Masahiro Maeda, Yoichi Yamada, Yoshiyuki Kurebayashi, Daisuke Matsumoto, Masaru Kobashi, Takatomo Fukumoto
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Publication number: 20100150619Abstract: Provided is a development device including: a development roller in which continuous spiraling inclined grooves having different inclinations with respect to an axial direction are formed so as to cross each other; and a feed roller which is in contact with the development roller and feeds toner to the development roller, wherein transportation force, which is used for transporting the toner on the development roller from one side to the other side of the axial direction of the development roller, is generated by the rotation of the feed roller.Type: ApplicationFiled: November 18, 2009Publication date: June 17, 2010Applicant: SEIKO EPSON CORPORATIONInventors: Masahiro MAEDA, Yoichi YAMADA, Yoshiyuki KUREBAYASHI, Daisuke MATSUMOTO, Masaru KOBASHI, Takatomo FUKUMOTO
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Publication number: 20100150618Abstract: A developing roller having a first inclined groove and a second inclined groove, which are continuous in a helical shape inclined with respect to an axial direction and a circumferential direction and which intersect with each other, formed in the surface thereof, wherein the first inclined groove and the second inclined groove have different groove depths.Type: ApplicationFiled: November 18, 2009Publication date: June 17, 2010Applicant: SEIKO EPSON CORPORATIONInventors: Yoshiyuki KUREBAYASHI, Masahiro MAEDA, Yoichi YAMADA, Daisuke MATSUMOTO
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Publication number: 20100150617Abstract: A method of manufacturing a developing roller, including: a first rolling process for forming a first inclined groove which is continuous in a helical shape, by rotating a first die having blades inclined with respect to an axial direction and a circumferential direction, and a non-bladed die, and feeding an unprocessed developing roller between the first die and the non-bladed die; and a second rolling process for forming a second inclined groove which is continuous in a helical shape and intersects with the first inclined groove, by rotating a second die having blades inclined with respect to an axial direction and a circumferential direction in the direction opposite to that of the first die, and the non-bladed die in the same direction opposite to that in the first rolling process, and feeding the developing roller between the second die and the non-bladed die.Type: ApplicationFiled: November 18, 2009Publication date: June 17, 2010Applicant: SEIKO EPSON CORPORATIONInventors: Masahiro MAEDA, Yoichi YAMADA, Yoshiyuki KUREBAYASHI, Daisuke MATSUMOTO, Masaru KOBASHI, Takatomo FUKUMOTO