Patents by Inventor Ayumu Matsumoto
Ayumu Matsumoto 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: 20240109096Abstract: A coating device coats a coating region of a to-be-coated object having a convex curved surface. A coating device includes a head, an arm, and a controller. The head includes a nozzle surface. The arm holds the head. The controller controls movement of the head via the arm. A controller moves a head in a first direction along an end portion of a coating region in a posture in which a gap between a nozzle surface located on an end portion side of the coating region and a to-be-coated object is smaller than a gap between the nozzle surface located on a center side of the coating region and the to-be-coated object.Type: ApplicationFiled: December 14, 2023Publication date: April 4, 2024Inventors: Daisuke HOZUMI, Ayumu MATSUMOTO
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Publication number: 20220379337Abstract: A coating device coats a coating region of a to-be-coated object having a convex curved surface. A coating device includes a head, an arm, and a controller. The head includes a nozzle surface. The arm holds the head. The controller controls movement of the head via the arm. A controller moves a head in a first direction along an end portion of a coating region in a posture in which a gap between a nozzle surface located on an end portion side of the coating region and a to-be-coated object is smaller than a gap between the nozzle surface located on a center side of the coating region and the to-be-coated object.Type: ApplicationFiled: July 31, 2020Publication date: December 1, 2022Inventors: Daisuke HOZUMI, Ayumu MATSUMOTO
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Publication number: 20220274129Abstract: A coating device includes a head, an arm, and a controller. The head includes a nozzle surface. The arm holds the head. The controller controls movement of the head via the arm. The controller vibrates the head in a second direction intersecting a first direction, and/or rotationally oscillates along a nozzle surface while moving the head in the first direction along the nozzle surface in a state where the nozzle surface and a to-be-coated object face each other.Type: ApplicationFiled: July 31, 2020Publication date: September 1, 2022Inventors: Daisuke HOZUMI, Kenko GEJIMA, Ayumu MATSUMOTO
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Patent number: 10286665Abstract: A liquid ejection head includes a first channel member and a plurality of pressurizing parts. The first channel member includes a plurality of ejection holes, a common channel, a damper chamber, and a damper. The first channel member is configured by a plurality of flat plates including a first plate with the plurality of ejection holes and a second plate adjacent to this. The second plate includes a first part sandwiched between the damper chamber and the first plate. A covering layer is unevenly provided on the first surface of the first part.Type: GrantFiled: July 28, 2016Date of Patent: May 14, 2019Assignee: Kyocera CorporationInventors: Kousei Horiuchi, Kouichi Maruta, Kazumasa Furuhashi, Yoshihiro Yuu, Ayumu Matsumoto, Hiroshi Tamura, Takayuki Yamamoto
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Publication number: 20190001673Abstract: A liquid ejection head includes a first channel member and a plurality of pressurizing parts. The first channel member includes a plurality of ejection holes, a common channel, a damper chamber, and a damper. The first channel member is configured by a plurality of flat plates including a first plate with the plurality of ejection holes and a second plate adjacent to this. The second plate includes a first part sandwiched between the damper chamber and the first plate. A covering layer is unevenly provided on the first surface of the first part.Type: ApplicationFiled: July 28, 2016Publication date: January 3, 2019Applicant: KYOCERA CorporationInventors: Kousei HORIUCHI, Kouichi MARUTA, Kazumasa FURUHASHI, Yoshihiro YUU, Ayumu MATSUMOTO, Hiroshi TAMURA, Takayuki YAMAMOTO
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Patent number: 8888257Abstract: Providing is a liquid discharge head less susceptible to a standing wave occurred in a shared flow path; a liquid discharge device using the liquid discharge head; and a recording apparatus. The liquid discharge head includes a plurality of liquid discharge pores; a plurality of liquid pressing chambers 210 respectively connected to the plurality of liquid discharge pores; a shared flow path 205a being long in one direction and being linked the plurality of liquid pressing chambers 210; a liquid supply path 205c which is connected to both ends of the shared flow path 205a, and has a larger cross-sectional area than the shared flow path 205a; and a plurality of pressing parts for respectively pressing liquid in the plurality of liquid pressing chambers 10. The cross-sectional area of a middle segment of the shared flow path 205a is smaller than the cross-sectional area of that of each of both end segments thereof.Type: GrantFiled: October 28, 2010Date of Patent: November 18, 2014Assignee: Kyocera CorporationInventors: Ayumu Matsumoto, Daisuke Hozumi
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Patent number: 8591010Abstract: The liquid discharge head includes a plate-shaped passage member providing a plurality of liquid pressurizing chambers of identical shape which open into a main surface and are arranged in a matrix shape, a plurality of liquid discharge holes, and a plurality of individual supply paths; and a plate-shaped piezoelectric actuator having a common electrode, a piezoelectric layer, and a plurality of individual electrodes laminated on a diaphragm. The plate-shaped passage member and the plate-shaped piezoelectric actuator are laminated one upon another so that the diaphragm and the piezoelectric layer cover the plurality of liquid pressurizing chambers. In a plan view of the liquid discharge head, an opening of each of the liquid pressurizing chambers is a polygonal shape having at least one acute angle shaped corner.Type: GrantFiled: June 25, 2010Date of Patent: November 26, 2013Assignee: Kyocera CorporationInventors: Ayumu Matsumoto, Wataru Ikeuchi
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Patent number: 8534799Abstract: A liquid discharge head through which discharged liquid droplets are easily gathered into one droplet, and a recording device using the head are provided. A liquid discharge head includes a liquid pressurizing chamber, a displacement element that applies pressure to the liquid pressurizing chamber, a liquid discharge hole, and a communication passage connecting the liquid pressurizing chamber and the liquid discharge hole. The communication passage includes a narrow portion having a small cross-section area and first and second communication passages. A ratio of lengths of the communication and second communication passages; a ratio of combined inertances of the liquid pressurizing chamber and the first communication passage and of the liquid discharge hole and the first communication passage; and a ratio of combined compliances of the liquid pressurizing chamber and the first communication passage and of the liquid discharge hole and the first communication passage fall within predetermined ranges.Type: GrantFiled: April 26, 2010Date of Patent: September 17, 2013Assignee: Kyocera CorporationInventors: Wataru Ikeuchi, Ayumu Matsumoto
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Publication number: 20120188298Abstract: Providing is a liquid discharge head less susceptible to a standing wave occurred in a shared flow path; a liquid discharge device using the liquid discharge head; and a recording apparatus. The liquid discharge head includes a plurality of liquid discharge pores; a plurality of liquid pressing chambers 210 respectively connected to the plurality of liquid discharge pores; a shared flow path 205a being long in one direction and being linked the plurality of liquid pressing chambers 210; a liquid supply path 205c which is connected to both ends of the shared flow path 205a, and has a larger cross-sectional area than the shared flow path 205a; and a plurality of pressing parts for respectively pressing liquid in the plurality of liquid pressing chambers 10. The cross-sectional area of a middle segment of the shared flow path 205a is smaller than the cross-sectional area of that of each of both end segments thereof.Type: ApplicationFiled: October 28, 2010Publication date: July 26, 2012Applicant: KYOCERA CORPORATIONInventors: Ayumu Matsumoto, Daisuke Hozumi
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Publication number: 20120113194Abstract: The present invention provides a liquid discharge head less susceptible to crosstalk between displacement elements adjacent to each other, and a recording device using the liquid discharge head. The liquid discharge head includes a plate-shaped passage member providing a plurality of liquid pressurizing chambers of identical shape which open into a main surface and are arranged in a matrix shape, a plurality of liquid discharge holes, and a plurality of individual supply paths; and a plate-shaped piezoelectric actuator having a common electrode, a piezoelectric layer, and a plurality of individual electrodes laminated on a diaphragm. The plate-shaped passage member and the plate-shaped piezoelectric actuator are laminated one upon another so that the diaphragm and the piezoelectric layer cover the plurality of liquid pressurizing chambers. In a plan view of the liquid discharge head, an opening of each of the liquid pressurizing chambers is a polygonal shape having at least one acute angle shaped corner.Type: ApplicationFiled: June 25, 2010Publication date: May 10, 2012Applicant: KYOCERA CORPORATIONInventors: Ayumu Matsumoto, Wataru Ikeuchi
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Publication number: 20120069104Abstract: Provided is a liquid discharge head through which discharged liquid droplets are easily gathered into one droplet, and a recording device using the head. A liquid discharge head 2 comprises a liquid pressurizing chamber 10, a displacement element 50 that applies a pressure to the liquid pressurizing chamber 10, a liquid discharge hole 8, and a communication passage 7 connecting between the liquid pressurizing chamber 10 and the liquid discharge hole 8. The communication passage 7 comprises a narrow portion 7-3 having a small cross-section area, a first communication passage 7-1 defined by a portion between a connection end to the liquid pressurizing chamber 10 and a connection end to the narrow portion 7-3, and a second communication passage 7-2 defined by a portion between a connection end to the liquid discharge hole 8 and the connection end to the narrow portion 7-3.Type: ApplicationFiled: April 26, 2010Publication date: March 22, 2012Applicant: KYOCERA CORPORATIONInventors: Wataru Ikuechi, Ayumu Matsumoto
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Patent number: 8028931Abstract: A liquid discharge device (1) has a pressure chamber (3), a nozzle (4), and a communication path (5) that interconnects the pressure chamber (3) and the nozzle (4). A region that has a specific length L1 and lies from the position (8) of the boundary between the communication path (5) of the pressure chamber (3) toward the nozzle (4) is formed as a narrow section (9) that has an opening area S1 smaller than the opening area S0 of a region closer to the nozzle (4) than the narrow section (9).Type: GrantFiled: March 26, 2007Date of Patent: October 4, 2011Assignees: Kyocera Corporation, Brother Kogyo Kabushiki KaishaInventors: Ayumu Matsumoto, Manabu Hibi
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Patent number: 7938499Abstract: It is possible to minimize the amplitude of residual vibration of a piezoelectric actuator so as to maintain the image quality of a formed image at a preferable level in case of an ink jet head, for example. A liquid discharge device includes a control unit (14) for ON/OFF control of a drive voltage applied to the piezoelectric actuator. The control unit (14) has a micro vibration control section (23) for drive-controlling a drive circuit so as to micro-vibrate the piezoelectric actuator in a waiting state not discharging a liquid drop from a nozzle, in a range that no liquid drop is discharged in the nozzle. The piezoelectric ink jet head includes the liquid discharge device. The drive method is for micro-vibrating the piezoelectric actuator in the waiting state not discharging a liquid drop from the nozzle, in a range that no liquid drop is discharged from the nozzle.Type: GrantFiled: September 29, 2006Date of Patent: May 10, 2011Assignees: Kyocera Corporation, Brother Kogyo Kabushiki KaishaInventors: Ayumu Matsumoto, Naoto Iwao
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Publication number: 20100001095Abstract: A liquid discharge device (1) has a pressure chamber (3), a nozzle (4), and a communication path (5) that interconnects the pressure chamber (3) and the nozzle (4). A region that has a specific length L1 and lies from the position (8) of the boundary between the communication path (5) of the pressure chamber (3) toward the nozzle (4) is formed as a narrow section (9) that has an opening area S1 smaller than the opening area S0 of a region closer to the nozzle (4) than the narrow section (9).Type: ApplicationFiled: March 26, 2007Publication date: January 7, 2010Applicants: KYOCERA CORPORATION, BROTHER KOGYO KABUSHIKI KAISHAInventors: Ayumu Matsumoto, Manabu Hibi
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Patent number: 7628462Abstract: In order to preserve good droplet discharge efficiency in a droplet discharge device, a plurality of timings are set within a period in which a plurality of droplets are to be discharged to a target position. Consecutive timings are divided by a cycle time of pressure wave that is generated inside a pressure chamber by transmitting a signal to an actuator. When a plurality of signals are applied to the actuator at consecutive timings, the peak of the pressure wave and the application of the signals are synchronous, and the droplet discharge efficiency will be improved. However, the consecutive number of timings at which the consecutive signals are transmitted is limited to a predetermined number. In this way, the pressure inside the pressure chamber can be prevented from becoming too high.Type: GrantFiled: February 23, 2006Date of Patent: December 8, 2009Assignees: Brother Kogyo Kabushiki Kaisha, Kyocera CorporationInventors: Naoto Iwao, Ayumu Matsumoto
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Publication number: 20090219315Abstract: It is possible to minimize the amplitude of residual vibration of a piezoelectric actuator so as to maintain the image quality of a formed image at a preferable level in case of an ink jet head, for example. A liquid discharge device includes a control unit (14) for ON/OFF control of a drive voltage applied to the piezoelectric actuator. The control unit (14) has a micro vibration control section (23) for drive-controlling a drive circuit so as to micro-vibrate the piezoelectric actuator in a waiting state not discharging a liquid drop from a nozzle, in a range that no liquid drop is discharged in the nozzle. The piezoelectric ink jet head includes the liquid discharge device. The drive method is for micro-vibrating the piezoelectric actuator in the waiting state not discharging a liquid drop from the nozzle, in a range that no liquid drop is discharged from the nozzle.Type: ApplicationFiled: September 29, 2006Publication date: September 3, 2009Applicants: KYOCERA CORPORATION, BROTHER KOGYO KABUSHIKI KAISHAInventors: Ayumu Matsumoto, Naoto Iwao
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Patent number: 7537300Abstract: An inkjet printer whose ink discharge characteristics will rarely change even when used for a long period of time is developed. The inkjet printer has a pressure chamber, a piezoelectric actuator forming a wall of the pressure chamber and a controller for applying voltage to the piezoelectric actuator. The controller applies a predetermined voltage in general, and the piezoelectric actuator is usually deformed to project toward the pressure chamber. Ink discharge signal comprises an advanced voltage change from the predetermined voltage to zero and a subsequent change from zero to the predetermined voltage. The characteristics of the piezoelectric actuator will change if the piezoelectric actuator is continuously deformed during ink non-discharge period. The controller applies an additional signal including an advanced change from the predetermined voltage to a lower voltage and a subsequent change from the lower voltage to the predetermined voltage.Type: GrantFiled: May 11, 2006Date of Patent: May 26, 2009Assignees: Brother Kogyo Kabushiki Kaisha, Kyocera CorporationInventors: Atsushi Hirota, Ayumu Matsumoto
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Patent number: 7517062Abstract: The present invention is directed at a liquid discharge device having reduced crosstalk, which slows the rate of change of liquid discharge speed, and is suitable as a printing head. The liquid discharge device includes a piezoelectric actuator and a flow passage member. The piezoelectric actuator has a plurality of driving electrodes from on a piezoelectric ceramic layer, and a plurality of piezoelectric displacement elements is disposed longitudinally and laterally with regularity. In the flow passage member, a plurality of liquid compressing chambers is formed with liquid outlet orifices. The piezoelectric actuator is placed on the flow passages member, so that the driving electrodes correspond in position to the liquid compressing chambers.Type: GrantFiled: March 31, 2005Date of Patent: April 14, 2009Assignees: Kyocera Corporation, Brother Kogyo Kabushiki KaishaInventors: Ayumu Matsumoto, Manabu Hibi, Atsuo Sakaida, Atsushi Hirota
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Patent number: 7374276Abstract: An inkjet printing head includes: a flow path unit having a plurality of pressure chambers arranged along a plane and connected to nozzles; and an actuator unit fixed on a surface of the flow path unit and changes volume of each of the pressure chambers, the actuator unit including: a plurality of individual electrodes arranged in positions opposite to the pressure chambers respectively; a common electrode disposed to extend over the plurality of pressure chambers and having openings each formed at least at a part of a region opposite to the individual electrodes; and a piezoelectric sheet sandwiched between the common electrode and the individual electrodes.Type: GrantFiled: June 30, 2004Date of Patent: May 20, 2008Assignees: Brother Kogyo Kabushiki Kaisha, Kyocera CorporationInventors: Hiroshi Taira, Ayumu Matsumoto
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Patent number: 7364247Abstract: A controller of an ink jet head includes a waveform information storage section for storing waveform patterns concerning a plurality of types of drive signals capable of making positions of dots formed on print paper by ejecting ink from nozzles different from each other with respect to a predetermined direction orthogonal to a relative moving direction between the print paper and the ink jet head. The controller further includes a waveform selection section for selecting one drive signal from among the plurality of drive signals stored in the waveform information storage section so that the same type of drive signal is not selected n or more successive times (where n is a natural number of two or more) for each nozzle.Type: GrantFiled: March 25, 2005Date of Patent: April 29, 2008Assignee: Brother Kogyo Kabushiki KaishaInventors: Naoto Iwao, Atsuo Sakaida, Ayumu Matsumoto