Patents by Inventor Junichi Karasawa

Junichi Karasawa 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).

  • Publication number: 20200131322
    Abstract: A film having excellent optical homogeneity, which is suitably used as an optical film in an image display device, and a method for manufacturing the same. Moreover, an evaluation method which can evaluate the optical homogeneity of the film with a higher precision than in conventional evaluation methods is provided. A film that is a cast film containing a resin having a weight average molecular weight of 200,000 or more, wherein, when line profiles in a direction h and a direction v which are orthogonal to each other in a film inverse space image obtained by Fourier transforming a projection image obtained by a projection method using the cast film are a line profile h and a line profile v.
    Type: Application
    Filed: May 30, 2018
    Publication date: April 30, 2020
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Mitsunori NODONO, Masayoshi KARASAWA, Akiko KISHIDA, Masami MAKIDERA, Junichi IKEUCHI
  • Patent number: 9738068
    Abstract: In a liquid ejection control device, an ejection tube section type acquisition unit discriminates an ejection tube section type of an ejection tube section mounted in a main body section, and acquires a fitted correspondence relationship fitting the discriminated ejection tube section type. A voltage amplitude setting unit sets a voltage amplitude of a drive voltage waveform so as to cause kinetic energy to meet an energy instruction value input by using an energy dial based on a rising index value related to rising of the drive voltage waveform and a repetitive frequency instruction value input by using a repetitive frequency dial with reference to the fitted correspondence relationship.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: August 22, 2017
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Junichi Karasawa
  • Patent number: 9730722
    Abstract: In a liquid ejection control device, an ejection tube section type acquisition unit discriminates an ejection tube section type of an ejection tube section mounted in a main body section, and acquires a fitted correspondence relationship fitting the discriminated ejection tube section type. A voltage amplitude setting unit sets a voltage amplitude of a drive voltage waveform so as to cause momentum to meet a momentum instruction value input by using a momentum dial based on a rising index value related to rising of the drive voltage waveform and a repetitive frequency instruction value input by using a repetitive frequency dial with reference to the fitted correspondence relationship.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: August 15, 2017
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Junichi Karasawa
  • Patent number: 9694578
    Abstract: A liquid ejection control apparatus, which controls a drive voltage waveform applied to a piezoelectric element so as to control ejection of a pulsed liquid jet, includes a first operation unit that receives input of an index value for setting a position of an inflection point in a rising portion of the drive voltage waveform, and a control unit that sets the position of the inflection point in the rising portion of the drive voltage waveform according to the index value so as to control changing of the drive voltage waveform.
    Type: Grant
    Filed: September 17, 2016
    Date of Patent: July 4, 2017
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Junichi Karasawa
  • Publication number: 20170181762
    Abstract: In a liquid ejection control apparatus, an operation unit includes adjustment levers for changing a rising frequency, voltage amplitude, and the like of a drive voltage waveform applied to a piezoelectric element. In a control unit, a rising frequency setting section sets a rising frequency in response to an input operation on a rising frequency adjustment lever so as to make constant a change amount regarding momentum related to a pulsed liquid jet ejected from a liquid ejection device and the change amount per unit operation level for the rising frequency adjustment lever in a state in which voltage amplitude of the drive voltage waveform is set to a predetermined value.
    Type: Application
    Filed: July 2, 2015
    Publication date: June 29, 2017
    Applicant: Seiko Epson Corporation
    Inventor: Junichi Karasawa
  • Publication number: 20170164967
    Abstract: In a liquid ejection control apparatus, an operation unit includes an adjustment lever that is used to input an indication value of momentum or kinetic energy related to a pulsed liquid jet ejected from a liquid ejection device. A control unit includes a frequency setting portion that sets a rising frequency of a drive voltage waveform applied to a piezoelectric element and an amplitude setting portion that sets the amplitude of the drive voltage waveform, so that momentum or kinetic energy has an indication value.
    Type: Application
    Filed: July 3, 2015
    Publication date: June 15, 2017
    Applicant: Seiko Epson Corporation
    Inventor: Junichi Karasawa
  • Patent number: 9669625
    Abstract: A liquid ejection control apparatus, which controls a drive voltage waveform applied to a piezoelectric element so as to control ejection of a pulsed liquid jet, includes a first operation unit that receives input of an index value for setting a flow velocity peak timing of a main jet of the pulsed liquid jet, and a control unit that sets a rising portion of the drive voltage waveform according to the index value so as to control changing of the drive voltage waveform.
    Type: Grant
    Filed: September 17, 2016
    Date of Patent: June 6, 2017
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Junichi Karasawa
  • Patent number: 9669626
    Abstract: In a liquid ejection control apparatus, an operation unit includes an energy dial used to input an energy indication value related to kinetic energy of a pulsed liquid jet ejected from a liquid ejection device, and a repetition frequency dial used to input a repetition frequency indication value related to the number of times of ejection per unit time of the pulsed liquid jet. A control unit includes a rising waveform shape setting section which sets a rising waveform shape of a drive voltage waveform so that the kinetic energy has the energy indication value on the basis of voltage amplitude of the drive voltage waveform and the repetition frequency indication value. The repetition frequency dial may be omitted, and a repetition frequency may be fixed to a predetermined value.
    Type: Grant
    Filed: September 17, 2016
    Date of Patent: June 6, 2017
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Junichi Karasawa
  • Publication number: 20170080711
    Abstract: In a liquid ejection control apparatus, an operation unit includes an energy dial used to input an energy indication value related to kinetic energy of a pulsed liquid jet ejected from a liquid ejection device, and a repetition frequency dial used to input a repetition frequency indication value related to the number of times of ejection per unit time of the pulsed liquid jet. A control unit includes a rising waveform shape setting section which sets a rising waveform shape of a drive voltage waveform so that the kinetic energy has the energy indication value on the basis of voltage amplitude of the drive voltage waveform and the repetition frequency indication value. The repetition frequency dial may be omitted, and a repetition frequency may be fixed to a predetermined value.
    Type: Application
    Filed: September 17, 2016
    Publication date: March 23, 2017
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Junichi KARASAWA
  • Publication number: 20170080709
    Abstract: A liquid ejection control apparatus, which controls a drive voltage waveform applied to a piezoelectric element so as to control ejection of a pulsed liquid jet, includes a first operation unit that receives input of an index value for setting a flow velocity peak timing of a main jet of the pulsed liquid jet, and a control unit that sets a rising portion of the drive voltage waveform according to the index value so as to control changing of the drive voltage waveform.
    Type: Application
    Filed: September 17, 2016
    Publication date: March 23, 2017
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Junichi KARASAWA
  • Publication number: 20170080710
    Abstract: A liquid ejection control apparatus, which controls a drive voltage waveform applied to a piezoelectric element so as to control ejection of a pulsed liquid jet, includes a first operation unit that receives input of an index value for setting a position of an inflection point in a rising portion of the drive voltage waveform, and a control unit that sets the position of the inflection point in the rising portion of the drive voltage waveform according to the index value so as to control changing of the drive voltage waveform.
    Type: Application
    Filed: September 17, 2016
    Publication date: March 23, 2017
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Junichi KARASAWA
  • Publication number: 20160367278
    Abstract: In a liquid ejection control device, an operation unit includes a momentum dial for inputting a momentum instructing value related to momentum of a pulsed liquid jet ejected from a liquid ejection device, and a repetitive frequency dial for inputting a repetitive frequency instructing value related to the number of times ejection of the pulsed liquid occurs per unit time. In addition, a controller includes a voltage magnitude setting section that sets voltage magnitude of the drive voltage waveform such that the momentum becomes the momentum instructing value, based on a rising index value related to rising of the drive voltage waveform and the repetitive frequency instructing value.
    Type: Application
    Filed: August 31, 2016
    Publication date: December 22, 2016
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Junichi KARASAWA
  • Patent number: 9469106
    Abstract: In a liquid ejection control device, an operation unit includes an energy dial for inputting an energy instructing value related to kinetic energy of a pulsed liquid jet ejected from a liquid ejection device, and a repetitive frequency dial for inputting a repetitive frequency instructing value related to the number of times ejection of the pulsed liquid occurs per unit time. In addition, a controller includes a voltage magnitude setting section that sets voltage magnitude of the drive voltage waveform such that the kinetic energy becomes the energy instructing value, based on a rising index value related to rising of the drive voltage waveform and the repetitive frequency instructing value.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: October 18, 2016
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Junichi Karasawa
  • Patent number: 9463620
    Abstract: In a liquid ejection control device, an operation unit includes a momentum dial for inputting a momentum instructing value related to momentum of a pulsed liquid jet ejected from a liquid ejection device, and a repetitive frequency dial for inputting a repetitive frequency instructing value related to the number of times ejection of the pulsed liquid occurs per unit time. In addition, a controller includes a rising frequency setting section that sets a rising frequency as a rising index value related to rising of a drive voltage waveform such that the momentum becomes the momentum instructing value, based on voltage magnitude of the drive voltage waveform and the repetitive frequency instructing value.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: October 11, 2016
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Junichi Karasawa
  • Patent number: 9457565
    Abstract: In a liquid ejection control device, an operation unit includes an energy dial for inputting an energy instructing value related to kinetic energy of a pulsed liquid jet ejected from a liquid ejection device, and a repetitive frequency dial for inputting a repetitive frequency instructing value related to the number of times ejection of the pulsed liquid occurs per unit time. In addition, a controller includes a rising frequency setting section that sets rising frequency as a rising index value related to rising of a drive voltage waveform such that the kinetic energy becomes the energy instructing value, based on voltage magnitude of the drive voltage waveform and the repetitive frequency instructing value.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: October 4, 2016
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Junichi Karasawa
  • Patent number: 9456841
    Abstract: In a liquid ejection control device, an operation unit includes a momentum dial for inputting a momentum instructing value related to momentum of a pulsed liquid jet ejected from a liquid ejection device, and a repetitive frequency dial for inputting a repetitive frequency instructing value related to the number of times ejection of the pulsed liquid occurs per unit time. In addition, a controller includes a voltage magnitude setting section that sets voltage magnitude of the drive voltage waveform such that the momentum becomes the momentum instructing value, based on a rising index value related to rising of the drive voltage waveform and the repetitive frequency instructing value.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: October 4, 2016
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Junichi Karasawa
  • Publication number: 20160221335
    Abstract: In a liquid ejection control device, an ejection tube section type acquisition unit discriminates an ejection tube section type of an ejection tube section mounted in a main body section, and acquires a fitted correspondence relationship fitting the discriminated ejection tube section type. A voltage amplitude setting unit sets a voltage amplitude of a drive voltage waveform so as to cause momentum to meet a momentum instruction value input by using a momentum dial based on a rising index value related to rising of the drive voltage waveform and a repetitive frequency instruction value input by using a repetitive frequency dial with reference to the fitted correspondence relationship.
    Type: Application
    Filed: January 28, 2016
    Publication date: August 4, 2016
    Inventor: Junichi KARASAWA
  • Publication number: 20160221336
    Abstract: In a liquid ejection control device, an ejection tube section type acquisition unit discriminates an ejection tube section type of an ejection tube section mounted in a main body section, and acquires a fitted correspondence relationship fitting the discriminated ejection tube section type. A voltage amplitude setting unit sets a voltage amplitude of a drive voltage waveform so as to cause kinetic energy to meet an energy instruction value input by using an energy dial based on a rising index value related to rising of the drive voltage waveform and a repetitive frequency instruction value input by using a repetitive frequency dial with reference to the fitted correspondence relationship.
    Type: Application
    Filed: January 28, 2016
    Publication date: August 4, 2016
    Inventor: Junichi KARASAWA
  • Publication number: 20160185109
    Abstract: In a liquid ejection control device, an operation unit includes a momentum dial for inputting a momentum instructing value related to momentum of a pulsed liquid jet ejected from a liquid ejection device, and a repetitive frequency dial for inputting a repetitive frequency instructing value related to the number of times ejection of the pulsed liquid occurs per unit time. In addition, a controller includes a voltage magnitude setting section that sets voltage magnitude of the drive voltage waveform such that the momentum becomes the momentum instructing value, based on a rising index value related to rising of the drive voltage waveform and the repetitive frequency instructing value.
    Type: Application
    Filed: December 23, 2015
    Publication date: June 30, 2016
    Inventor: Junichi Karasawa
  • Publication number: 20160185106
    Abstract: In a liquid ejection control device, an operation unit includes an energy dial for inputting an energy instructing value related to kinetic energy of a pulsed liquid jet ejected from a liquid ejection device, and a repetitive frequency dial for inputting a repetitive frequency instructing value related to the number of times ejection of the pulsed liquid occurs per unit time. In addition, a controller includes a voltage magnitude setting section that sets voltage magnitude of the drive voltage waveform such that the kinetic energy becomes the energy instructing value, based on a rising index value related to rising of the drive voltage waveform and the repetitive frequency instructing value.
    Type: Application
    Filed: December 23, 2015
    Publication date: June 30, 2016
    Inventor: Junichi KARASAWA