Patents by Inventor Shinji Kawakami

Shinji Kawakami 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).

  • Patent number: 10255938
    Abstract: A magnetic recording medium of the present invention includes a non-magnetic substrate, and a magnetic layer containing a magnetic powder. The magnetic powder is constituted by an ?-iron oxide powder. The magnetic layer has a squareness in a thickness direction of 0.65 or more. In a differential curve obtained by differentiating a hysteresis curve in the thickness direction of the magnetic layer, two or more peaks are present. In a case where, out of peaks in the same direction among the above-described peaks, a local maximum of a largest peak in a magnetic field range of +500 oersted [Oe] or more is taken as P1 and a local maximum of a largest peak in a magnetic field range of ?500 oersted [Oe] or more and less than +500 oersted [Oe] is taken as P2, a relationship below is satisfied: 0.25?P2/P1?0.60.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: April 9, 2019
    Assignee: MAXELL HOLDINGS, LTD.
    Inventors: Toshio Hiroi, Shinji Kawakami, Kenji Tanaka
  • Patent number: 10195875
    Abstract: A printing apparatus includes a transport unit which transports a recording medium in a transport direction; a printing unit which prints an image and a mark on the recording medium; and a mark detecting unit which is located on an upstream side of the printing unit in the transport direction, and detects a mark, includes a function of automatically adjusting a detecting sensitivity of the mark detecting unit, and obtains a printing start position using the mark, in which the mark detecting unit has a timer function including an ON delay in which a time between detecting of a mark and outputting of a detecting signal of ON is delayed, uses the timer function when obtaining the printing start position, and does not use the timer function when performing the automatic adjusting.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: February 5, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Naoki Hori, Masashi Kitahara, Shinji Kawakami, Atsushi Imamura
  • Publication number: 20180350398
    Abstract: A refractive index nL and an attenuation rate kL of a magnetic layer are obtained by irradiating linearly polarized light at an irradiation angle of 70° from a lengthwise direction of the magnetic layer to the surface of the magnetic layer, and a vertical reflectance RL during vertical incidence of the linearly polarized light in the lengthwise direction is obtained based on nL and kL. A refractive index nT and an attenuation rate kT of the magnetic layer are obtained by irradiating linearly polarized light at an irradiation angle of 70° from a width direction of the magnetic layer to the surface of the magnetic layer, and a vertical reflectance RT during vertical incidence of the linearly polarized light in the width direction is obtained from nT and kT. If a variation rate A (%) of RL and RT is A=|RL/RT?1|×100, the relationship A?10% is established.
    Type: Application
    Filed: June 4, 2018
    Publication date: December 6, 2018
    Applicant: Maxell Holdings, Ltd.
    Inventors: Shinji KAWAKAMI, Toshio KAWAKITA, Masao FUJITA
  • Publication number: 20180326759
    Abstract: Technology enabling accurately detected marks on a print medium according to the type of print medium is provided. A printer 1 has a media type identifier 110 that determines the type of medium; a mark sensor 76 that projects light and detects a mark on the medium; and an emittance controller 111 that sets the emittance level of the light the mark sensor 76 projects. The printer 1 can change the operating mode according to the type of medium M identified by the media type identifier 110. In the white medium mode, the mark sensor 76 detects a mark MR with the emittance level set to a white medium emittance level. In the non-white medium mode, the mark sensor 76 detects a mark MR with the emittance level set to a non-white medium emittance level, which is higher than the white medium emittance level.
    Type: Application
    Filed: May 9, 2018
    Publication date: November 15, 2018
    Inventors: Masashi KITAHARA, Atsushi IMAMURA, Shinji KAWAKAMI, Naoki HORI
  • Publication number: 20180272758
    Abstract: A printing apparatus includes a transport unit which transports a recording medium in a transport direction; a printing unit which prints an image and a mark on the recording medium; and a mark detecting unit which is located on an upstream side of the printing unit in the transport direction, and detects a mark, includes a function of automatically adjusting a detecting sensitivity of the mark detecting unit, and obtains a printing start position using the mark, in which the mark detecting unit has a timer function including an ON delay in which a time between detecting of a mark and outputting of a detecting signal of ON is delayed, uses the timer function when obtaining the printing start position, and does not use the timer function when performing the automatic adjusting.
    Type: Application
    Filed: March 12, 2018
    Publication date: September 27, 2018
    Inventors: Naoki HORI, Masashi KITAHARA, Shinji KAWAKAMI, Atsushi IMAMURA
  • Patent number: 10059551
    Abstract: A transporting device includes a first driving roller which transports the base material; a second driving roller which is disposed to be closer to a downstream side of the transporting direction than the first driving roller, and transports the base material; a driven roller which nips the base material between the second driving roller and the driven roller, and rotates together with the second driving roller; and an inter-roller transporting path which is provided between the first driving roller and the second driving roller, and through which the base material is transported in a state where the base material is suspended in a direction of gravity and bent. The second driving roller starts winding the base material at a position which is closer to an upstream side of the transporting direction than a position where the driven roller is in contact with the base material.
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: August 28, 2018
    Assignee: Seiko Epson Corporation
    Inventors: Shinji Kawakami, Akihiro Toya, Masaru Jingushi
  • Publication number: 20180182422
    Abstract: In a magnetic recording medium according to the present invention, if a straight line W having a length of 500 nm and a width of 15 nm is displayed parallel to a width direction of the magnetic layer and a straight line L having a length of 500 nm and a width of 15 nm is displayed parallel to a longitudinal direction of the magnetic layer, the number of magnetic particles that intersect the straight line W is N1, and the number of magnetic particles that intersect the straight line L is N2, then, a relationship of N1/0.5>60 and N2/0.5>60 is established where N1/0.5 is the number of magnetic particles per micrometer obtained by dividing N1 by 0.5 ?m and N2/0.5 is the number of magnetic particles per micrometer obtained by dividing N2 by 0.5 ?m.
    Type: Application
    Filed: December 27, 2017
    Publication date: June 28, 2018
    Applicant: Maxell Holdings, Ltd.
    Inventors: Shinji KAWAKAMI, Toshio HIROI, Masao FUJITA
  • Patent number: 9944099
    Abstract: An output value of the transport position output portion when a first mark which is provided in a recording medium is at a predetermined position with respect to a detection region is stored in a storage portion as a reference value, and a start timing of the printing of the image is controlled based on the timing at which the mark detection portion detects the mark after confirming that the first mark reaches a predetermined range from the detection region based on comparison of the output value of the transport position output portion and the reference value with each other, when the transport in the first direction of the recording medium is started.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: April 17, 2018
    Assignee: Seiko Epson Corporation
    Inventors: Naoki Hori, Masashi Oba, Kunihiro Kawada, Shinji Kawakami
  • Publication number: 20170274683
    Abstract: An output value of the transport position output portion when a first mark which is provided in a recording medium is at a predetermined position with respect to a detection region is stored in a storage portion as a reference value, and a start timing of the printing of the image is controlled based on the timing at which the mark detection portion detects the mark after confirming that the first mark reaches a predetermined range from the detection region based on comparison of the output value of the transport position output portion and the reference value with each other, when the transport in the first direction of the recording medium is started.
    Type: Application
    Filed: March 20, 2017
    Publication date: September 28, 2017
    Inventors: Naoki HORI, Masashi OBA, Kunihiro KAWADA, Shinji KAWAKAMI
  • Publication number: 20170258252
    Abstract: A cup holder includes a holder body having a peripheral wall surrounding an accommodation space, a tray provided in the accommodation space and vertically shiftably supported by the peripheral wall, and a height adjuster configured to vertically shift the tray. The height adjuster includes at least one rack gear extending vertically on the peripheral wall, at least one pinion gear rotatably supported by the tray and meshing with the rack gear, and an energizing member provided at the tray and energizing to rotate the pinion gear for upward shift of the tray.
    Type: Application
    Filed: February 10, 2017
    Publication date: September 14, 2017
    Inventors: Shinichi SAWADA, Shinji KAWAKAMI
  • Publication number: 20170221513
    Abstract: A magnetic recording medium of the present invention includes a non-magnetic substrate, and a magnetic layer containing a magnetic powder. The magnetic powder is constituted by an ?-iron oxide powder. The magnetic layer has a squareness in a thickness direction of 0.65 or more. In a differential curve obtained by differentiating a hysteresis curve in the thickness direction of the magnetic layer, two or more peaks are present. In a case where, out of peaks in the same direction among the above-described peaks, a local maximum of a largest peak in a magnetic field range of +500 oersted [Oe] or more is taken as P1 and a local maximum of a largest peak in a magnetic field range of ?500 oersted [Oe] or more and less than +500 oersted [Oe] is taken as P2, a relationship below is satisfied: 0.25?P2/P1?0.60.
    Type: Application
    Filed: January 31, 2017
    Publication date: August 3, 2017
    Applicant: HITACHI MAXELL, LTD.
    Inventors: Toshio HIROI, Shinji KAWAKAMI, Kenji TANAKA
  • Patent number: 9662914
    Abstract: A printing apparatus includes a rotating drum which rotates by winding the printing base material around a circumferential side surface, and through which the printing base material is transported in the transporting direction; a recording portion which forms a printed image with respect to the printing base material on the rotating drum; and a driven roller which is positioned to be closer to a downstream side than the recording portion in the transporting direction, and rotates together with the rotating drum. The driven roller is disposed at a position for regulating a terminal position of the transporting direction in which the printing base material is wound in the rotating drum. The driven roller comes into contact with the printing base material at positions on both sides in a direction which intersects with the transporting direction of a region where the recording portion forms the printed image.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: May 30, 2017
    Assignee: Seiko Epson Corporation
    Inventors: Shinji Kawakami, Akihiro Toya
  • Patent number: 9463943
    Abstract: A transporting device which transports a belt-shaped base material by considering a longitudinal direction of the base material as a transporting direction, includes a first driving roller which transports the base material in the transporting direction; a second driving roller which is disposed to be closer to a downstream side of the transporting direction than the first driving roller, and transports the base material in the transporting direction; an inter-roller transporting path which is provided between the first driving roller and the second driving roller, and through which the base material is transported in a state where the base material is suspended in a direction of gravity and bent; and a tension applying portion which suctions a bent part of the base material from a lower side in the direction of gravity, and applies tension to the base material on the inter-roller transporting path.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: October 11, 2016
    Assignee: Seiko Epson Corporation
    Inventor: Shinji Kawakami
  • Publication number: 20160114997
    Abstract: A transporting device includes a first driving roller which transports the base material; a second driving roller which is disposed to be closer to a downstream side of the transporting direction than the first driving roller, and transports the base material; a driven roller which nips the base material between the second driving roller and the driven roller, and rotates together with the second driving roller; and an inter-roller transporting path which is provided between the first driving roller and the second driving roller, and through which the base material is transported in a state where the base material is suspended in a direction of gravity and bent. The second driving roller starts winding the base material at a position which is closer to an upstream side of the transporting direction than a position where the driven roller is in contact with the base material.
    Type: Application
    Filed: October 21, 2015
    Publication date: April 28, 2016
    Inventors: Shinji KAWAKAMI, Akihiro TOYA, Masaru JINGUSHI
  • Publication number: 20160114598
    Abstract: A printing apparatus includes a rotating drum which rotates by winding the printing base material around a circumferential side surface, and through which the printing base material is transported in the transporting direction; a recording portion which forms a printed image with respect to the printing base material on the rotating drum; and a driven roller which is positioned to be closer to a downstream side than the recording portion in the transporting direction, and rotates together with the rotating drum. The driven roller is disposed at a position for regulating a terminal position of the transporting direction in which the printing base material is wound in the rotating drum. The driven roller comes into contact with the printing base material at positions on both sides in a direction which intersects with the transporting direction of a region where the recording portion forms the printed image.
    Type: Application
    Filed: October 23, 2015
    Publication date: April 28, 2016
    Inventors: Shinji KAWAKAMI, Akihiro TOYA
  • Publication number: 20160114597
    Abstract: A transporting device which transports a belt-shaped base material by considering a longitudinal direction of the base material as a transporting direction, includes a first driving roller which transports the base material in the transporting direction; a second driving roller which is disposed to be closer to a downstream side of the transporting direction than the first driving roller, and transports the base material in the transporting direction; an inter-roller transporting path which is provided between the first driving roller and the second driving roller, and through which the base material is transported in a state where the base material is suspended in a direction of gravity and bent; and a tension applying portion which suctions a bent part of the base material from a lower side in the direction of gravity, and applies tension to the base material on the inter-roller transporting path.
    Type: Application
    Filed: October 22, 2015
    Publication date: April 28, 2016
    Inventor: Shinji KAWAKAMI
  • Publication number: 20160005430
    Abstract: The magnetic recording medium of the present invention comprises: a non-magnetic substrate; a non-magnetic layer formed on one of principal surfaces of the non-magnetic substrate; and a magnetic layer formed on a principal surface of the non-magnetic layer opposite to the non-magnetic substrate. Mr and t satisfy 0.0020 ?T·m?Mr·t?0.0150 ?T·m, where Mr is the residual magnetic flux density of the magnetic layer, and t is the average thickness of the magnetic layer, L1 satisfies 2 nm?L1?6 nm, where L1 is the average thickness of a first mixed layer that is formed on the surface of the magnetic layer opposite to the non-magnetic layer, and L2 satisfies 0.1?L2/t?0.45, where L2 is the average thickness of a second mixed layer that is formed on the surface of the magnetic layer facing the non-magnetic layer.
    Type: Application
    Filed: September 16, 2015
    Publication date: January 7, 2016
    Applicant: HITACHI MAXELL, LTD.
    Inventors: Shinji KAWAKAMI, Sadamu KUSE, Kenji TANAKA
  • Patent number: 9165586
    Abstract: The magnetic recording medium of the present invention comprises: a non-magnetic substrate; a non-magnetic layer formed on one of principal surfaces of the non-magnetic substrate; and a magnetic layer formed on a principal surface of the non-magnetic layer opposite to the non-magnetic substrate. Mr and t satisfy 0.0020 ?T·m?Mr·t?0.0150 ?T·m, where Mr is the residual magnetic flux density of the magnetic layer, and t is the average thickness of the magnetic layer, L1 satisfies 2 nm?L1?6 nm, where L1 is the average thickness of a first mixed layer that is formed on the surface of the magnetic layer opposite to the non-magnetic layer, and L2 satisfies 0.1?L2/t?0.45, where L2 is the average thickness of a second mixed layer that is formed on the surface of the magnetic layer facing the non-magnetic layer.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: October 20, 2015
    Assignee: HITACHI MAXELL, LTD.
    Inventors: Shinji Kawakami, Sadamu Kuse, Kenji Tanaka
  • Patent number: 8827438
    Abstract: A recording apparatus includes a transport unit that intermittently transports an elongated recording medium from an upstream side to a downstream side as the lengthwise direction of the recording medium moves along a transport path. A recording unit adheres a recording material to the recording medium when the recording medium is stopped in a midstream position of the transport path. A drying unit downstream from the recording unit heats and dries the recording material. A contact member has a contact surface continuous contact with the surface of the recording medium opposite the surface thereof to which the recording material is adhered, from the time when the recording medium enters into the drying unit to the time when the recording medium is discharged from the drying unit. The contact member forms the transport path with the contact surface having at least one bent section in the drying unit.
    Type: Grant
    Filed: August 19, 2013
    Date of Patent: September 9, 2014
    Assignee: Seiko Epson Composition
    Inventors: Akihiro Toya, Shinji Kawakami
  • Publication number: 20140055541
    Abstract: A recording apparatus includes a transport unit that intermittently transports an elongated recording medium from an upstream side to a downstream side as the lengthwise direction of the recording medium moves along a transport path. A recording unit adheres a recording material to the recording medium when the recording medium is stopped in a midstream position of the transport path. A drying unit downstream from the recording unit heats and dries the recording material. A contact member has a contact surface continuous contact with the surface of the recording medium opposite the surface thereof to which the recording material is adhered, from the time when the recording medium enters into the drying unit to the time when the recording medium is discharged from the drying unit. The contact member forms the transport path with the contact surface having at least one bent section in the drying unit.
    Type: Application
    Filed: August 19, 2013
    Publication date: February 27, 2014
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Akihiro TOYA, Shinji KAWAKAMI