Patents by Inventor Kazutomo Seki
Kazutomo Seki 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: 8308271Abstract: A 3D inkjet printer includes an inkjet head and a medium holder configured to hold a medium having a three-dimensional shape. A Y-axial driving mechanism is capable of moving the inkjet head along a Y-axial. A Z-axial supporting mechanism supports the medium holder so as to be movable along a Z-axial direction. An X-axial driving mechanism is capable of moving the Z-axial supporting mechanism along an X-axial direction. A Z-axial driving mechanism is capable of moving the medium holder along the Z-axial direction. The medium holder includes an A-axial driving mechanism capable of swinging the medium along an A-axial direction. The A-axial direction is a rotational direction about a shaft disposed along the Y-axial direction. A B-axial driving mechanism is capable of rotating the medium along a B-axial direction. The B-axial direction is a rotational direction about a shaft disposed perpendicular to the Y-axial direction.Type: GrantFiled: November 18, 2010Date of Patent: November 13, 2012Assignee: Mimaki Engineering Co., Ltd.Inventors: Kazutomo Seki, Yoshiki Onozawa, So Inukai, Nobuyuki Ono
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Publication number: 20120188299Abstract: To reduce unevenness in print density. A controller of a three-dimensional inkjet printer superimposes noise on a control signal which drive controls an A drive motor 46 and B drive motor 46, and based on the control signal on which the noise is superimposed, drives the A axis drive motor 45 and B axis drive motor 46. Because of this, a medium M revolves while fluctuating minutely in an A axis direction and rotates while fluctuating minutely in a B axis direction, so that the landing positions of ink droplets ejected from an inkjet head 20 deviate non-uniformly in a main scanning direction and sub-scanning direction overall. Because of this, the deviation of dot positions becomes visually inconspicuous, and unevenness in print density decreases.Type: ApplicationFiled: August 31, 2009Publication date: July 26, 2012Applicant: MIMAKI ENGINEERING CO., LTD.Inventors: Kazutomo Seki, Akifumi Seki, Yoshiki Onozawa, Nobuyuki Ono
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Patent number: 8104856Abstract: A printer includes a holding unit, a printer head, a supporting device, a movement controller and a printing controller. The holding unit is configured to hold a print substrate having a surface to be printed. The axes X and Y pass through the print substrate. The movement controller is configured to move the holding unit and the printer head relative to each other in the directions of the axes X, Y and Z which are substantially perpendicular to each other and configured to rotate the holding unit about the axes X and Y relative to the printer head. The printing controller is configured to control ejection of the ink from the printer head according to a relative position of the holding unit and the printer head.Type: GrantFiled: March 6, 2008Date of Patent: January 31, 2012Assignees: Mimaki Engineering Co., Ltd., Institute of National Colleges of Technology, JapanInventors: Chikao Tezuka, Kazutomo Seki, Nobuyuki Ono
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Publication number: 20110115849Abstract: A 3D inkjet printer includes an inkjet head and a medium holder configured to hold a medium having a three-dimensional shape. A Y-axial driving mechanism is capable of moving the inkjet head along a Y-axial. A Z-axial supporting mechanism supports the medium holder so as to be movable along a Z-axial direction. An X-axial driving mechanism is capable of moving the Z-axial supporting mechanism along an X-axial direction. A Z-axial driving mechanism is capable of moving the medium holder along the Z-axial direction. The medium holder includes an A-axial driving mechanism capable of swinging the medium along an A-axial direction. The A-axial direction is a rotational direction about a shaft disposed along the Y-axial direction. A B-axial driving mechanism is capable of rotating the medium along a B-axial direction. The B-axial direction is a rotational direction about a shaft disposed perpendicular to the Y-axial direction.Type: ApplicationFiled: November 18, 2010Publication date: May 19, 2011Applicant: MIMAKI ENGINEERING Co., Ltd.Inventors: Kazutomo Seki, Yoshiki Onozawa, So Inukai, Nobuyuki Ono
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Patent number: 7819055Abstract: A three-dimensional printer comprises a base 1, a first supporting member 10 supported on the base such that the first supporting member is movable in the direction of an axis X, a second supporting member 15 supported on the first supporting member such that the second supporting member is movable in the direction of an axis Z, a third supporting member 20 supported on the second supporting member such that the third supporting member is rotatable about a first rotation axis Y0 extending in the direction of an axis Y, a holding chuck 26, for holding a print substrate, supported on the third supporting member such that the holding chuck is rotatable about a second rotation axis X0, and a printer head 5 supported on the base 1 to extend above the print substrate 80 such that the printer head is movable in the direction of the axis Y.Type: GrantFiled: April 23, 2007Date of Patent: October 26, 2010Assignees: Mimaki Engineering Co., Ltd., Institute of National Colleges of Technology, JapanInventors: Chikao Tezuka, Kazutomo Seki, Nobuyuki Ono
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Patent number: 7744204Abstract: A liquid discharge apparatus includes a nozzle, a pressure chamber, a liquid supply chamber, a liquid supply passage, and a fluid resistance changing mechanism. A liquid pressure in the pressure chamber is configured to be changed to discharge liquid from the nozzle. The liquid supply passage extends in a connecting direction to connect the liquid supply chamber and the pressure chamber. The fluid resistance changing mechanism is configured to change a fluid resistance of the liquid supply passage.Type: GrantFiled: May 22, 2007Date of Patent: June 29, 2010Assignee: Mimaki Engineering Co., Ltd.Inventors: Seiichi Yokoyama, Kazutomo Seki
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Patent number: 7740349Abstract: A printer includes a holding unit, a printer head, a movement controller and a printing controller. The holding unit is configured to hold a print substrate having a surface to be printed. The printer head is configured to eject ink from a plurality of ejection nozzles to the surface. The movement controller is configured to move the holding unit and the printer head relative to each other. The printing controller is configured to control ejection of the ink from the printer head according to a surface curvature of the surface and a relative position of the holding unit and the printer head.Type: GrantFiled: March 6, 2008Date of Patent: June 22, 2010Assignee: Mimaki Engineering Co., Ltd.Inventors: Chikao Tezuka, Kazutomo Seki, Nobuyuki Ono
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Publication number: 20090073200Abstract: A printer includes a holding unit, a printer head, a driving unit, a movement controller and a printing controller. The holding unit is configured to hold a print substrate having a surface to be printed. The driving unit is configured to move at least one of the holding unit and the printer head. The movement controller is configured to control the driving unit to move the holding unit and the printer head relatively so that a distance between the at least one ink nozzle and the surface to be printed is kept at a predetermined distance and so that the ink ejected from the at least one ink nozzle collides with the surface substantially perpendicularly. The printing controller is configured to control ejection of the ink from the printer head according to a distance between the at least one ink nozzle and the surface to be printed.Type: ApplicationFiled: March 6, 2008Publication date: March 19, 2009Applicant: MIMAKI ENGINEERING CO., LTD.Inventors: Chikao TEZUKA, Kazutomo Seki, Nobuyuki Ono
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Publication number: 20080218541Abstract: A printer includes a holding unit, a printer head, a supporting device, a movement controller and a printing controller. The holding unit is configured to hold a print substrate having a surface to be printed. The axes X and Y pass through the print substrate. The movement controller is configured to move the holding unit and the printer head relative to each other in the directions of the axes X, Y and Z which are substantially perpendicular to each other and configured to rotate the holding unit about the axes X and Y relative to the printer head. The printing controller is configured to control ejection of the ink from the printer head according to a relative position of the holding unit and the printer head.Type: ApplicationFiled: March 6, 2008Publication date: September 11, 2008Applicant: MIMAKI ENGINEERING CO., LTD.Inventors: Chikao TEZUKA, Kazutomo Seki, Nobuyuki Ono
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Publication number: 20080218542Abstract: A printer includes a holding unit, a printer head, a movement controller and a printing controller. The holding unit is configured to hold a print substrate having a surface to be printed. The printer head is configured to eject ink from a plurality of ejection nozzles to the surface. The movement controller is configured to move the holding unit and the printer head relative to each other. The printing controller is configured to control ejection of the ink from the printer head according to a surface curvature of the surface and a relative position of the holding unit and the printer head.Type: ApplicationFiled: March 6, 2008Publication date: September 11, 2008Applicant: MIMAKI ENGINEERING CO, LTD.Inventors: Chikao TEZUKA, Kazutomo Seki, Nobuyuki Ono
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Publication number: 20080105144Abstract: A three-dimensional printer comprises a base 1, a first supporting member 10 supported on the base such that the first supporting member is movable in the direction of an axis X, a second supporting member 15 supported on the first supporting member such that the second supporting member is movable in the direction of an axis Z, a third supporting member 20 supported on the second supporting member such that the third supporting member is rotatable about a first rotation axis Y0 extending in the direction of an axis Y, a holding chuck 26, for holding a print substrate, supported on the third supporting member such that the holding chuck is rotatable about a second rotation axis X0, and a printer head 5 supported on the base 1 to extend above the print substrate 80 such that the printer head is movable in the direction of the axis Y.Type: ApplicationFiled: April 23, 2007Publication date: May 8, 2008Applicants: MIMAKI ENGINEERING CO., LTD., INSTITUTE OF NATIONAL COLLEGES OF TECHNOLOGY, JAPANInventors: Chikao Tetsuka, Kazutomo Seki, Nobuyuki Ono
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Publication number: 20070279460Abstract: A liquid discharge apparatus includes a nozzle, a pressure chamber, a liquid supply chamber, a liquid supply passage, and a fluid resistance changing mechanism. A liquid pressure in the pressure chamber is configured to be changed to discharge liquid from the nozzle. The liquid supply passage extends in a connecting direction to connect the liquid supply chamber and the pressure chamber. The fluid resistance changing mechanism is configured to change a fluid resistance of the liquid supply passage.Type: ApplicationFiled: May 22, 2007Publication date: December 6, 2007Applicant: Mimaki Engineering Co., Ltd.Inventors: Seiichi YOKOYAMA, Kazutomo Seki