Patents by Inventor Yoshiaki Hoshino

Yoshiaki Hoshino 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: 11921369
    Abstract: An object of the present invention is to provide a polarizer having a high degree of alignment and an image display device including the polarizer. A polarizer of the present invention is a polarizer formed of a polarizer-forming composition containing a liquid crystal compound, a first dichroic material, and a second dichroic material, in which the polarizer has an array structure formed of the first dichroic material and the second dichroic material.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: March 5, 2024
    Assignee: FUJIFILM Corporation
    Inventors: Wataru Hoshino, Yoshiaki Takada, Yuzo Fujiki, Kengo Saito, Yasuhiro Ishiwata, Takashi Katou, Keisuke Ushirogata
  • Patent number: 11674236
    Abstract: There is provided a plating apparatus capable of suitably measuring a micro-throwing power. A first plating apparatus (1A) includes: a first anode (12A) disposed in a first plating bathtub (11A); an insulating substrate (4) having a hole (5) and disposed in the first plating bathtub (11A); a pair of first cathodes (13AX, 13AY), each cathode being provided in the insulating substrate (4) at a bottom portion of the hole (5) and at a surface on an opening side of the hole (5); a first plating power source (14A) configured to supply an electric current between the first anode (12) and the pair of first cathodes (13AX, 13AY); and a first electric current measuring circuit (22A) configured to measure respective values of electric currents flowing through the pair of first cathodes (13AX, 13AY).
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: June 13, 2023
    Assignee: YAMAMOTO-MS Co., Ltd.
    Inventors: Wataru Yamamoto, Kimiko Koiwa, Katsunori Akiyama, Yoshiaki Hoshino
  • Patent number: 11254143
    Abstract: An image forming apparatus includes an image forming unit to form an image on a recording medium by discharging liquid droplets onto the medium; and a media heater to heat the medium by contacting a rear surface of the medium opposite a surface of the medium on which the image is formed, in which the media heater includes a contact member with a contact surface having a predetermined curvature that the medium contacts, the contact member is a roller member, and the medium closely contacts the contact surface of the contact member across an entire width of the medium in a direction perpendicular to the media conveyance direction.
    Type: Grant
    Filed: September 17, 2020
    Date of Patent: February 22, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yoshiaki Hoshino, Kenji Sato, Hirokazu Ikenoue, Satoshi Kitaoka, Hideaki Nishimura, Yoko Ishii
  • Patent number: 11097556
    Abstract: A drying device includes a plurality of guide rollers and a heater. The plurality of guide rollers is configured to contact a liquid applied face of a drying target object that is conveyed with liquid applied to the liquid applied face, while the drying target object is dried. The plurality of guide rollers includes at least one guide roller having a surface roughness of from 2 to 8. The heater is configured to heat the drying target object while the plurality of guide rollers guides the drying target object. A printer includes a liquid application device configured to apply liquid to a drying target object, and the drying device.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: August 24, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshiaki Hoshino, Osamu Takehira, Hirokazu Ikenoue, Satoshi Kitaoka
  • Publication number: 20210254236
    Abstract: There is provided a plating apparatus capable of suitably measuring a micro-throwing power. A first plating apparatus (1A) includes: a first anode (12A) disposed in a first plating bathtub (11A); an insulating substrate (4) having a hole (5) and disposed in the first plating bathtub (11A); a pair of first cathodes (13AX, 13AY), each cathode being provided in the insulating substrate (4) at a bottom portion of the hole (5) and at a surface on an opening side of the hole (5); a first plating power source (14A) configured to supply an electric current between the first anode (12) and the pair of first cathodes (13AX, 13AY); and a first electric current measuring circuit (22A) configured to measure respective values of electric currents flowing through the pair of first cathodes (13AX, 13AY).
    Type: Application
    Filed: March 13, 2018
    Publication date: August 19, 2021
    Applicant: YAMAMOTO-MS Co., Ltd.
    Inventors: Wataru YAMAMOTO, Kimiko KOIWA, Katsunori AKIYAMA, Yoshiaki HOSHINO
  • Patent number: 10988855
    Abstract: A plating apparatus capable of preventing difference in an electrode potential between the pair of cathodes and a disturbance in a current distribution in Haring cell test and so on is provided. A plating apparatus (1) has an anode (12) and a pair of cathodes (13X) (13Y) which are provided in a plating bathtub (11); a plating power source (14) to supply an electric current between the anode (12) and the pair of cathodes (13X) (13Y); and a feedback circuit (21) to have an electrode potential of a first cathode (13X) equal to an electrode potential of a second cathode (13Y) while a summation of electric currents flowing through the pair of cathodes (13X) (13Y) is kept constant.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: April 27, 2021
    Assignee: YAMAMOTO-MS Co., Ltd.
    Inventors: Wataru Yamamoto, Kimiko Koiwa, Katsunori Akiyama, Masazumi Ishiguro, Yoshiaki Hoshino
  • Publication number: 20210001648
    Abstract: An image forming apparatus includes an image forming unit to form an image on a recording medium by discharging liquid droplets onto the medium; and a media heater to heat the medium by contacting a rear surface of the medium opposite a surface of the medium on which the image is formed, in which the media heater includes a contact member with a contact surface having a predetermined curvature that the medium contacts, the contact member is a roller member, and the medium closely contacts the contact surface of the contact member across an entire width of the medium in a direction perpendicular to the media conveyance direction.
    Type: Application
    Filed: September 17, 2020
    Publication date: January 7, 2021
    Applicant: RICOH COMPANY, LTD.
    Inventors: Yoshiaki HOSHINO, Kenji SATO, Hirokazu IKENOUE, Satoshi KITAOKA, Hideaki NISHIMURA, Yoko ISHII
  • Patent number: 10800187
    Abstract: An image forming apparatus includes an image forming unit to form an image on a recording medium by discharging liquid droplets onto the medium; and a media heater to heat the medium by contacting a rear surface of the medium opposite a surface of the medium on which the image is formed, in which the media heater includes a contact member with a contact surface having a predetermined curvature that the medium contacts, the contact member is a roller member, and the medium closely contacts the contact surface of the contact member across an entire width of the medium in a direction perpendicular to the media conveyance direction.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: October 13, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yoshiaki Hoshino, Kenji Sato, Hirokazu Ikenoue, Satoshi Kitaoka, Hideaki Nishimura, Yoko Ishii
  • Patent number: 10730319
    Abstract: A drying device includes a drier, a gas circulator, and a concentration adjuster. The drier warms a liquid composition on a drying target object. The gas circulator circulates a gas containing a volatile component of an organic solvent warmed and volatilized by the drier to reuse the gas for drying. The concentration adjuster adjusts a concentration of the volatile component reused.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: August 4, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Hideaki Nishimura, Yoshiaki Hoshino, Hirokazu Ikenoue, Yoshiki Yanagawa, Amika Sagara
  • Patent number: 10723119
    Abstract: A dryer for drying a drying object includes a hot air generator to generate hot air to be blown onto the drying object, a contact heater to contact and heat the drying object, and a controller to control a heating temperature of the contact heater and a temperature of the hot air. The controller controls the heating temperature of the contact heater to be above a first predetermined temperature from a start of generation of the hot air by the hot air generator until the temperature of the hot air reaches a second predetermined temperature.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: July 28, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshiaki Hoshino, Ken Onodera, Toshihiro Yoshinuma
  • Publication number: 20200023654
    Abstract: A drying device includes a plurality of guide rollers and a heater. The plurality of guide rollers is configured to contact a liquid applied face of a drying target object that is conveyed with liquid applied to the liquid applied face, while the drying target object is dried. The plurality of guide rollers includes at least one guide roller having a surface roughness of from 2 to 8. The heater is configured to heat the drying target object while the plurality of guide rollers guides the drying target object. A printer includes a liquid application device configured to apply liquid to a drying target object, and the drying device.
    Type: Application
    Filed: July 17, 2019
    Publication date: January 23, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Yoshiaki Hoshino, Osamu Takehira, Hirokazu Ikenoue, Satoshi Kitaoka
  • Publication number: 20190352793
    Abstract: A plating apparatus capable of preventing difference in an electrode potential between the pair of cathodes and a disturbance in a current distribution in Haring cell test and so on is provided. A plating apparatus (1) has an anode (12) and a pair of cathodes (13X) (13Y) which are provided in a plating bathtub (11); a plating power source (14) to supply an electric current between the anode (12) and the pair of cathodes (13X) (13Y); and a feedback circuit (21) to have an electrode potential of a first cathode (13X) equal to an electrode potential of a second cathode (13Y) while a summation of electric currents flowing through the pair of cathodes (13X) (13Y) is kept constant.
    Type: Application
    Filed: December 28, 2016
    Publication date: November 21, 2019
    Inventors: Wataru YAMAMOTO, Kimiko KOIWA, Katsunori AKIYAMA, Masazumi ISHIGURO, Yoshiaki HOSHINO
  • Publication number: 20190283463
    Abstract: A drying device includes a drier, a gas circulator, and a concentration adjuster. The drier warms a liquid composition on a drying target object. The gas circulator circulates a gas containing a volatile component of an organic solvent warmed and volatilized by the drier to reuse the gas for drying. The concentration adjuster adjusts a concentration of the volatile component reused.
    Type: Application
    Filed: March 18, 2019
    Publication date: September 19, 2019
    Applicant: Ricoh Company, Ltd.
    Inventors: Hideaki Nishimura, Yoshiaki Hoshino, Hirokazu Ikenoue, Yoshiki Yanagawa, Amika Sagara
  • Publication number: 20180264803
    Abstract: A dryer for drying a drying object includes a hot air generator to generate hot air to be blown onto the drying object, a contact heater to contact and heat the drying object, and a controller to control a heating temperature of the contact heater and a temperature of the hot air. The controller controls the heating temperature of the contact heater to be above a first predetermined temperature from a start of generation of the hot air by the hot air generator until the temperature of the hot air reaches a second predetermined temperature.
    Type: Application
    Filed: March 6, 2018
    Publication date: September 20, 2018
    Applicant: Ricoh Company, Ltd.
    Inventors: Yoshiaki Hoshino, Ken Onodera, Toshihiro Yoshinuma
  • Publication number: 20180141348
    Abstract: An image forming apparatus includes an image forming unit to form an image on a recording medium by discharging liquid droplets onto the medium; and a media heater to heat the medium by contacting a rear surface of the medium opposite a surface of the medium on which the image is formed, in which the media heater includes a contact member with a contact surface having a predetermined curvature that the medium contacts, the contact member is a roller member, and the medium closely contacts the contact surface of the contact member across an entire width of the medium in a direction perpendicular to the media conveyance direction.
    Type: Application
    Filed: January 17, 2018
    Publication date: May 24, 2018
    Applicant: RICOH COMPANY, LTD.
    Inventors: Yoshiaki HOSHINO, Kenji SATO, Hirokazu IKENOUE, Satoshi KITAOKA, Hideaki NISHIMURA, Yoko ISHII
  • Patent number: 9902171
    Abstract: An image forming apparatus includes an image forming unit to form an image on a recording medium by discharging liquid droplets onto the medium; and a media heater to heat the medium by contacting a rear surface of the medium opposite a surface of the medium on which the image is formed, in which the media heater includes a contact member with a contact surface having a predetermined curvature that the medium contacts, the contact member is a roller member, and the medium closely contacts the contact surface of the contact member across an entire width of the medium in a direction perpendicular to the media conveyance direction.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: February 27, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yoshiaki Hoshino, Kenji Sato, Hirokazu Ikenoue, Satoshi Kitaoka, Hideaki Nishimura, Yoko Ishii
  • Patent number: 9731516
    Abstract: An image forming apparatus includes an image forming unit, a drier, and a heater temperature control. The image forming unit includes nozzles to discharge droplets onto a web medium to form an image on the web medium. The drier includes a plurality of heaters over which the web medium is stretched to form an arc-shaped feed path. The heater temperature control is configured to control a temperature of an upstream heater of the plurality of heaters on the feed path to be higher than a temperature of a downstream heater of the plurality of heaters on the feed path.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: August 15, 2017
    Assignee: Ricoh Company, Ltd.
    Inventor: Yoshiaki Hoshino
  • Publication number: 20170173974
    Abstract: An image forming apparatus includes an image forming unit to form an image on a recording medium by discharging liquid droplets onto the medium; and a media heater to heat the medium by contacting a rear surface of the medium opposite a surface of the medium on which the image is formed, in which the media heater includes a contact member with a contact surface having a predetermined curvature that the medium contacts, the contact member is a roller member, and the medium closely contacts the contact surface of the contact member across an entire width of the medium in a direction perpendicular to the media conveyance direction.
    Type: Application
    Filed: March 3, 2017
    Publication date: June 22, 2017
    Applicant: RICOH COMPANY, LTD.
    Inventors: Yoshiaki HOSHINO, Kenji SATO, Hirokazu IKENOUE, Satoshi KITAOKA, Hideaki NISHIMURA, Yoko ISHII
  • Patent number: 9616681
    Abstract: An image forming apparatus includes an image forming unit to form an image on a recording medium by discharging liquid droplets onto the medium; and a media heater to heat the medium by contacting a rear surface of the medium opposite a surface of the medium on which the image is formed, in which the media heater includes a contact member with a contact surface having a predetermined curvature that the medium contacts, the contact member is a roller member, and the medium closely contacts the contact surface of the contact member across an entire width of the medium in a direction perpendicular to the media conveyance direction.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: April 11, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yoshiaki Hoshino, Kenji Sato, Hirokazu Ikenoue, Satoshi Kitaoka, Hideaki Nishimura, Yoko Ishii
  • Publication number: 20160263914
    Abstract: An image forming apparatus includes an image forming unit, a drier, and a heater temperature control. The image forming unit includes nozzles to discharge droplets onto a web medium to form an image on the web medium. The drier includes a plurality of heaters over which the web medium is stretched to form an arc-shaped feed path. The heater temperature control is configured to control a temperature of an upstream heater of the plurality of heaters on the feed path to be higher than a temperature of a downstream heater of the plurality of heaters on the feed path.
    Type: Application
    Filed: March 10, 2016
    Publication date: September 15, 2016
    Inventor: Yoshiaki HOSHINO