Patents by Inventor Naomi Kubo
Naomi Kubo 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: 8979246Abstract: The object is to provide an inkjet head unit having: head chips having nozzles arranged on nozzle faces, and capable of discharging ink by respective independent pressure generating module from pressure chambers communicating with the nozzles; and a tabular head unit base on which the head chips are arranged and which is capable of holding the head chips, of abutting faces of the head unit base and the head chip, at least one of the abutting face on the head unit base side and the abutting face on the head chip side is formed in a stepped shape, so that the height of the abutting face of the head chip relative to the surface of the head unit base is partially changed, and the head chip is thereby attached to be inclined relative to the surface of the head unit base.Type: GrantFiled: December 15, 2011Date of Patent: March 17, 2015Assignee: Konica Minolta, Inc.Inventors: Shigekazu Sakai, Yoshifumi Takafuji, Yuichi Machida, Naomi Kubo, Koujiro Yoshida, Yasuo Nishi
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Patent number: 8864263Abstract: An inkjet recording device is configured to cause a head control substrate to generate a first drive waveform signal and a second drive waveform signal. The first drive waveform signal is for applying, after 2 AL from finishing time of an ejection pulse P1 having a voltage V1 and a pulse width AL, a cancel pulse C1 having a voltage V3 (<V1) of the same polarity as the ejection pulse to a head. The second drive waveform signal is for applying, from finishing time of an ejection pulse P12 following an ejection pulse P11 each having a voltage V1 and a pulse width AL, a cancel pulse C11 having a voltage V2 (<V1) of the same polarity as the ejection pulses to the head.Type: GrantFiled: December 7, 2011Date of Patent: October 21, 2014Assignee: Konica Minolta, Inc.Inventors: Naomi Kubo, Yoshifumi Takafuji, Eisuke Takagi
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Publication number: 20130271519Abstract: An inkjet recording device is configured to cause a head control substrate to generate a first drive waveform signal and a second drive waveform signal. The first drive waveform signal is for applying, after 2 AL from finishing time of an ejection pulse P1 having a voltage V1 and a pulse width AL, a cancel pulse C1 having a voltage V3 (<V1) of the same polarity as the ejection pulse to a head. The second drive waveform signal is for applying, from finishing time of an ejection pulse P12 following an ejection pulse P11 each having a voltage V1 and a pulse width AL, a cancel pulse C11 having a voltage V2 (<V1) of the same polarity as the ejection pulses to the head.Type: ApplicationFiled: December 7, 2011Publication date: October 17, 2013Applicant: KONICA MINOLTA, INC.Inventors: Naomi Kubo, Yoshifumi Takafuji, Eisuke Takagi
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Publication number: 20130271528Abstract: The object is to provide an inkjet head unit having: head chips having nozzles arranged on nozzle faces, and capable of discharging ink by respective independent pressure generating module from pressure chambers communicating with the nozzles; and a tabular head unit base on which the head chips are arranged and which is capable of holding the head chips, of abutting faces of the head unit base and the head chip, at least one of the abutting face on the head unit base side and the abutting face on the head chip side is formed in a stepped shape, so that the height of the abutting face of the head chip relative to the surface of the head unit base is partially changed, and the head chip is thereby attached to be inclined relative to the surface of the head unit base.Type: ApplicationFiled: December 15, 2011Publication date: October 17, 2013Applicant: KONICA MINOLTA, INC.Inventors: Shigekazu Sakai, Yoshifumi Takafuji, Yuichi Machida, Naomi Kubo, Koujiro Yoshida, Yasuo Nishi
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Patent number: 8020971Abstract: A liquid ejection head, having: an insulating nozzle plate provided with a nozzle having, a liquid supply port to supply liquid and an ejection port to eject the liquid supplied from the liquid supply port onto a substrate; a cavity communicating with the liquid supply port to reserve the liquid to be ejected from the ejection port; an electrostatic voltage applying device to generate an electrostatic attraction force by applying an electrostatic voltage between the liquid in the nozzle and the cavity, and the substrate; and a control device to control the electrostatic voltage applying device for conducting polarization relaxation operation by applying an electrostatic voltage having reverse polarity opposite to that of the electrostatic voltage applied in liquid ejection, wherein the nozzle is a flat nozzle and the control device.Type: GrantFiled: February 15, 2007Date of Patent: September 20, 2011Assignee: Konica Minolta Holdings, Inc.Inventors: Naomi Kubo, Yasuo Nishi, Atsuro Yanata
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Patent number: 7938510Abstract: A liquid ejection head including: an insulating nozzle plate 5 provided with a nozzle having, a liquid supply port to supply liquid and a ejection port to eject the liquid supplied from the liquid supply port onto a substrate; a cavity in communication with the liquid supply port to reserve the liquid to be ejected from the ejection port; an electrostatic voltage application device to generate an electrostatic attraction force by applying the electrostatic voltage between the liquid in the nozzle and in the cavity, and substrate; and a control device to control application of the electrostatic voltage through the electrostatic voltage application device; wherein the nozzle is a flat nozzle not protruding from the nozzle plate and the control device control the electrostatic voltage application device so as to eject the liquid from the nozzle by applying a bipolar pulse which alternates between negative and positive polarity.Type: GrantFiled: February 15, 2007Date of Patent: May 10, 2011Assignee: Konica Minolta Holdings, Inc.Inventors: Naomi Kubo, Yasuo Nishi, Atsuro Yanata
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Publication number: 20100182361Abstract: A liquid ejection head including: an insulating nozzle plate 5 provided with a nozzle having, a liquid supply port to supply liquid and a ejection port to eject the liquid supplied from the liquid supply port onto a substrate; a cavity in communication with the liquid supply port to reserve the liquid to be ejected from the ejection port; an electrostatic voltage application device to generate an electrostatic attraction force by applying the electrostatic voltage between the liquid in the nozzle and in the cavity, and substrate; and a control device to control application of the electrostatic voltage through the electrostatic voltage application device; wherein the nozzle is a flat nozzle not protruding from the nozzle plate and the control device control the electrostatic voltage application device so as to eject the liquid from the nozzle by applying a bipolar pulse which alternates between negative and positive polarity.Type: ApplicationFiled: February 15, 2007Publication date: July 22, 2010Inventors: Naomi Kubo, Yasuo Nishi, Atsuro Yanata
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Publication number: 20090096837Abstract: A liquid ejection head, having: an insulating nozzle plate provided with a nozzle having, a liquid supply port to supply liquid and an ejection port to eject the liquid supplied from the liquid supply port onto a substrate; a cavity communicating with the liquid supply port to reserve the liquid to be ejected from the ejection port; an electrostatic voltage applying device to generate an electrostatic attraction force by applying an electrostatic voltage between the liquid in the nozzle and the cavity, and the substrate; and a control device to control the electrostatic voltage applying device for conducting polarization relaxation operation by applying an electrostatic voltage having reverse polarity opposite to that of the electrostatic voltage applied in liquid ejection, wherein the nozzle is a flat nozzle and the control device.Type: ApplicationFiled: February 15, 2007Publication date: April 16, 2009Applicant: KONICA MINOLTA HOLDINGS, INCInventors: Naomi Kubo, Yasuo Nishi, Atsuro Yanata
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Patent number: 4495003Abstract: A steel tube having a small outside diameter and a large wall thickness, for use, for example, as a high pressure fuel injection pipe for a diesel engine, has a hardened layer on at least its internal surface. The hardened layer is formed by a diffusion layer which comprises a solid solution of nitrogen formed by tufftriding, and which is completely free from any intermetallic compounds, i.e. Fe.sub.3 N and Fe.sub.4 N. A method of manufacturing such a tube is also disclosed, and comprises tufftriding a steel tube in a molten bath of sodium cyanide while it is being axially vibrated, to form the diffusion layer, and heat treating the tube in a gaseous atmosphere to decompose any intermetallic compound on the diffusion layer.Type: GrantFiled: January 10, 1983Date of Patent: January 22, 1985Assignee: Usui Kokusai Sangyo Kabushiki KaishaInventor: Naomi Kubo
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Patent number: 4458724Abstract: A steel tube having a small outside diameter and a large wall thickness, for use, for example, as a high pressure fuel injection pipe for a diesel engine, has a hardened layer on at least its internal surface. The hardened layer is formed by a diffusion layer which comprises a solid solution of nitrogen formed by tufftriding, and which is completely free from any intermetallic compounds, i.e. Fe.sub.3 N and Fe.sub.4 N. A method of manufacturing such a tube is also disclosed, and comprises tufftriding a steel tube in a molten bath of sodium cyanide while it is being axially vibrated, to form the diffusion layer, and heat treating the tube in a gaseous atmosphere to decompose any intermetallic compound on the diffusion layer.Type: GrantFiled: June 1, 1982Date of Patent: July 10, 1984Assignee: Usui Kokusai Sangyo Kabushiki KaishaInventor: Naomi Kubo