Patents by Inventor Yoshihisa Morita

Yoshihisa Morita 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: 11180688
    Abstract: Provided are: a spherical magnesium oxide having not only high sphericity but also smooth surface and having excellent moisture resistance and excellent filling properties, and a method producing the same. In the present invention, by controlling the boron and iron contents of the calcined magnesium oxide to be in the respective predetermined ranges, there is provided a spherical magnesium oxide having a volume-based cumulative 50% particle diameter (D50), as measured by a laser diffraction/scattering particle size distribution measurement, in the range of from 3 to 200 ?m, which is the range for a relatively large particle diameter, and a high sphericity of 1.00 to 1.20, as measured from viewing a SEM photomicrograph, as well as smooth surface, and having excellent moisture resistance and excellent filling properties. A predetermined spherical magnesium oxide is provided by virtue of the synergies obtained from the boron content of 300 to 2,000 ppm and the iron content of 100 to 1,500 ppm.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: November 23, 2021
    Assignee: TATEHO CHEMICAL INDUSTRIES CO., LTD.
    Inventors: Takeshi Konishi, Mareshi Takegaki, Yoshihisa Osaki, Tomoaki Chikazawa, Akinori Saito, Yuki Morita
  • Publication number: 20210261369
    Abstract: A medium feeding apparatus includes: a placement mount on which a plurality of media are placed; a transportation mechanism that transports an uppermost medium of the plurality of media placed on the placement mount; a floating-air blowout mechanism that blows out air to float at least the uppermost medium; a suction mechanism that sucks air to cause the uppermost medium floated by the floating-air blowout mechanism blowing out air to be attracted to the transportation mechanism; and a floating-air control unit that causes the floating-air blowout mechanism to start to blow out air while the uppermost medium is being attracted to the transportation mechanism after starting to be transported by the transportation mechanism, so as to float at least a second medium located below the uppermost medium, and causes the floating-air blowout mechanism to stop blowing out air before the second medium starts to be transported by the transportation mechanism.
    Type: Application
    Filed: January 21, 2021
    Publication date: August 26, 2021
    Applicant: RISO KAGAKU CORPORATION
    Inventors: Yoshihisa MORITA, Yoshiyuki OKADA
  • Patent number: 11059687
    Abstract: A sheet supplying device includes: an air blow opening configured to blow air to a side portion of an uppermost part of stacked sheets; and a flow adjuster extending from above the air blow opening over an edge of a top sheet of the stacked sheets and configured to cause an air flow blown from the air blow opening to travel along an upper surface of the top sheet of the stacked sheets.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: July 13, 2021
    Assignee: RISO KAGAKU CORPORATION
    Inventors: Masayoshi Sakamoto, Yoshihisa Morita, Naoya Masuda, Toru Sakabe
  • Patent number: 10870548
    Abstract: A medium supply apparatus includes: a placement mount on which a plurality of media are placed; a transportation mechanism that transports an uppermost medium of the plurality of media placed on the placement mount; and an aspiration mechanism that aspirates air to attract the uppermost medium to the transportation mechanism, wherein the aspiration mechanism includes a blocking means for blocking air aspiration performed by the aspiration mechanism, in such a manner as to prevent another medium of the plurality of media that is located below the uppermost medium from being attracted to the transportation mechanism.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: December 22, 2020
    Assignee: RISO KAGAKU CORPORATION
    Inventors: Eiji Hori, Yoshihisa Morita
  • Publication number: 20200307931
    Abstract: A medium supply apparatus includes: a placement mount on which a plurality of media are placed; a transportation mechanism that transports an uppermost medium of the plurality of media placed on the placement mount; and an aspiration mechanism that aspirates air to attract the uppermost medium to the transportation mechanism, wherein the aspiration mechanism includes a blocking means for blocking air aspiration performed by the aspiration mechanism, in such a manner as to prevent another medium of the plurality of media that is located below the uppermost medium from being attracted to the transportation mechanism.
    Type: Application
    Filed: March 12, 2020
    Publication date: October 1, 2020
    Applicant: RISO KAGAKU CORPORATION
    Inventors: Eiji HORI, Yoshihisa MORITA
  • Patent number: 10308052
    Abstract: An inkjet printer includes: at least one inkjet head configured to eject ink to a sheet and print an image; at least one stiffening conveyor configured to convey the sheet toward the at least one inkjet head in a conveyance direction while stiffening the sheet by deforming the sheet into a wave shape in a width direction orthogonal to the conveyance direction; and at least one platen arranged to face the at least one inkjet head and having a protrusion, the protrusion provided on a surface of the at least one platen facing the at least one inkjet head and configured to support a convex portion in the wave shape of the deformed sheet, the at least one platen configured to support the sheet while keeping the sheet deformed in the wave shape.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: June 4, 2019
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Yoshihisa Morita
  • Publication number: 20190127163
    Abstract: A sheet supplying device includes: an air blow opening configured to blow air to a side portion of an uppermost part of stacked sheets; and a flow adjuster extending from above the air blow opening over an edge of a top sheet of the stacked sheets and configured to cause an air flow blown from the air blow opening to travel along an upper surface of the top sheet of the stacked sheets.
    Type: Application
    Filed: October 30, 2018
    Publication date: May 2, 2019
    Applicant: RISO KAGAKU CORPORATION
    Inventors: Masayoshi SAKAMOTO, Yoshihisa MORITA, Naoya MASUDA, Toru SAKABE
  • Patent number: 10137707
    Abstract: A second inkjet head, a second platen, and a second pair of conveyance rollers configured to convey a sheet toward the second platen downward with respect to a horizontal direction are arranged at lower positions than a first inkjet head arranged upstream of the second inkjet head, a first platen arranged upstream of the second platen, a first pair of conveyance rollers arranged upstream of the second pair of conveyance rollers and configured to convey the sheet toward the first plates downward with respect to the horizontal direction, respectively.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: November 27, 2018
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Yoshihisa Morita
  • Patent number: 10066111
    Abstract: Disclosed is an aqueous inkjet ink for a humidity-conditioning base material, the ink comprising at least a colorant, a water-dispersible resin and water, and the water-dispersible resin comprising at least one water-dispersible urethane resin and at least one water-dispersible (meth)acrylic resin or water-dispersible styrene/(meth)acrylic resin.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: September 4, 2018
    Assignee: RISO KAGAKU CORPORATION
    Inventors: Sayako Arai, Hirotaka Yamamoto, Ami Terakado, Shinji Tabuchi, Yoshihisa Morita
  • Publication number: 20180244082
    Abstract: An inkjet printer includes: at least one inkjet head configured to eject ink to a sheet and print an image; at least one stiffening conveyor configured to convey the sheet toward the at least one inkjet head in a conveyance direction while stiffening the sheet by deforming the sheet into a wave shape in a width direction orthogonal to the conveyance direction; and at least one platen arranged to face the at least one inkjet head and having a protrusion, the protrusion provided on a surface of the at least one platen facing the at least one inkjet head and configured to support a convex portion in the wave shape of the deformed sheet, the at least one platen configured to support the sheet while keeping the sheet deformed in the wave shape.
    Type: Application
    Filed: February 9, 2018
    Publication date: August 30, 2018
    Applicant: RISO KAGAKU CORPORATION
    Inventor: Yoshihisa MORITA
  • Patent number: 10017654
    Abstract: Disclosed is an aqueous inkjet ink for a humidity-conditioning base material, the ink comprising water, a water-dispersible resin, a colorant, and at least one surfactant selected from among acetylene glycol-based surfactants and silicone-based surfactants.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: July 10, 2018
    Assignee: RISO KAGAKU CORPORATION
    Inventors: Sayako Arai, Hirotaka Yamamoto, Ami Terakado, Shinji Tabuchi, Yoshihisa Morita
  • Publication number: 20180056672
    Abstract: A second inkjet head, a second platen, and a second pair of conveyance rollers configured to convey a sheet toward the second platen downward with respect to a horizontal direction are arranged at lower positions than a first inkjet head arranged upstream of the second inkjet head, a first platen arranged upstream of the second platen, a first pair of conveyance rollers arranged upstream of the second pair of conveyance rollers and configured to convey the sheet toward the first plates downward with respect to the horizontal direction, respectively.
    Type: Application
    Filed: August 1, 2017
    Publication date: March 1, 2018
    Applicant: RISO KAGAKU CORPORATION
    Inventor: Yoshihisa MORITA
  • Publication number: 20160319145
    Abstract: Disclosed is an aqueous inkjet ink for a humidity-conditioning base material, the ink comprising water, a water-dispersible resin, a colorant, and at least one surfactant selected from among acetylene glycol-based surfactants and silicone-based surfactants.
    Type: Application
    Filed: April 7, 2016
    Publication date: November 3, 2016
    Inventors: Sayako ARAI, Hirotaka YAMAMOTO, Ami TERAKADO, Shinji TABUCHI, Yoshihisa MORITA
  • Publication number: 20160319142
    Abstract: Disclosed is an aqueous inkjet ink for a humidity-conditioning base material, the ink comprising at least a colorant, a water-dispersible resin and water, and the water-dispersible resin comprising at least one water-dispersible urethane resin and at least one water-dispersible (meth)acrylic resin or water-dispersible styrene/(meth)acrylic resin.
    Type: Application
    Filed: April 7, 2016
    Publication date: November 3, 2016
    Inventors: Sayako ARAI, Hirotaka YAMAMOTO, Ami TERAKADO, Shinji TABUCHI, Yoshihisa MORITA
  • Patent number: 9248990
    Abstract: A sheet ejection tray on which a sheet ejected from a sheet ejection port lands, includes: an inclined surface that becomes higher as farther from the sheet ejection port in a sheet ejecting direction; a projecting member that is provided in a region closer to the sheet ejection port than the position on which a leading end of the sheet having a dimension not smaller than a predetermined value lands and which has a guiding surface more inclined than the inclined surface; and an abutting cover that contacts a rear end of the sheet moving toward the sheet ejection port due to the inclination of the guiding surface. The leading end of the sheet passes above the projecting member before landing on the guiding surface. A portion of the sheet closer to the sheet ejection port than the leading end lands on the guiding surface.
    Type: Grant
    Filed: April 29, 2013
    Date of Patent: February 2, 2016
    Assignee: RISO KAGAKU CORPORATION
    Inventor: Yoshihisa Morita
  • Patent number: 8915566
    Abstract: An image forming apparatus includes a conveying device for conveying paper, an image forming unit for forming an image on the paper, and a paper discharge tray where the image-formed paper is discharged and loaded at a predetermined discharge angle by the conveying device. The conveying device is controlled in a manner that a discharge speed of a first sheet of the paper is different from a discharge speed of second and subsequent sheets of the paper.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: December 23, 2014
    Assignee: Riso Kagaku Corporation
    Inventors: Yoshihisa Morita, Tomohiko Shimoda, Hitoshi Arai
  • Publication number: 20130307211
    Abstract: A sheet ejection tray on which a sheet ejected from a sheet ejection port lands, includes: an inclined surface that becomes higher as farther from the sheet ejection port in a sheet ejecting direction; a projecting member that is provided in a region closer to the sheet ejection port than the position on which a leading end of the sheet having a dimension not smaller than a predetermined value lands and which has a guiding surface more inclined than the inclined surface; and an abutting cover that contacts a rear end of the sheet moving toward the sheet ejection port due to the inclination of the guiding surface. The leading end of the sheet passes above the projecting member before landing on the guiding surface. A portion of the sheet closer to the sheet ejection port than the leading end lands on the guiding surface.
    Type: Application
    Filed: April 29, 2013
    Publication date: November 21, 2013
    Applicant: RISO KAGAKU CORPORATION
    Inventor: Yoshihisa MORITA
  • Patent number: 8366101
    Abstract: This paper feeder brings the uppermost paper sheet of a plurality of stacked paper sheets into contact with paper feed rollers and feeds out the paper sheet in a paper feeding direction by the drive thereof. Side fences for guiding both side edges of the paper sheet on a paper feeding table are provided with a pair of blowing units for blowing air to both side edges of the paper sheet, whose air quantity can be controlled independently of each other. When skewing occurs, the blowing units are controlled to blow a larger quantity of air to the paper side edge having larger friction against a lower paper sheet as compared with the quantity of air to the other paper side edge. In paper feeding, problems such as skewing, multi-feeding and idle feeding can be addressed.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: February 5, 2013
    Assignee: Riso Kagaku Corporation
    Inventor: Yoshihisa Morita
  • Publication number: 20120249649
    Abstract: An image forming apparatus includes a conveying device for paper; an image forming device for forming an image on the paper; and a paper discharge tray where the image-formed paper is discharged and loaded at a predetermined discharge angle by the conveying device. A speed of the paper discharge by the conveying device is controlled in accordance with at least one of the discharge angle and a type of paper to be used.
    Type: Application
    Filed: March 8, 2012
    Publication date: October 4, 2012
    Applicant: RISO KAGAKU CORPORATION
    Inventors: Yoshihisa MORITA, Tomohiko SHIMODA, Hitoshi ARAI
  • Publication number: 20120056367
    Abstract: This paper feeder brings the uppermost paper sheet of a plurality of stacked paper sheets into contact with paper feed rollers and feeds out the paper sheet in a paper feeding direction by the drive thereof. Side fences for guiding both side edges of the paper sheet on a paper feeding table are provided with a pair of blowing units for blowing air to both side edges of the paper sheet, whose air quantity can be controlled independently of each other. When skewing occurs, the blowing units are controlled to blow a larger quantity of air to the paper side edge having larger friction against a lower paper sheet as compared with the quantity of air to the other paper side edge. In paper feeding, problems such as skewing, multi-feeding and idle feeding can be addressed.
    Type: Application
    Filed: August 23, 2011
    Publication date: March 8, 2012
    Inventor: Yoshihisa Morita