Patents by Inventor Masahiro Katahira

Masahiro Katahira 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: 20210072694
    Abstract: An image forming apparatus includes: an image carrier configured to carry an image; a transfer unit configured to transfer the image to a medium; and a cleaner configured to remove deposits on a surface of the image carrier after passing through a position of the transfer unit, in which when a type of a medium to be used is a first medium, the cleaner improves an ability to remove the deposits from the image carrier as compared with a case where the medium to be used is a second medium having a lower transfer sensitivity than the first medium.
    Type: Application
    Filed: May 12, 2020
    Publication date: March 11, 2021
    Applicant: FUJI XEROX CO.,LTD.
    Inventors: Kotaro Araki, Masaaki Yamaura, Yoshinori Takahashi, Yoshiyuki Tominaga, Ayumi Noguchi, Takeshi Yasuda, Masahiro Katahira
  • Publication number: 20200081366
    Abstract: A transfer device includes a transfer unit that transfers an image on an image carrier carrying the image onto a recording material by applying a voltage containing an alternating-current component to the recording material; a humidifying unit that humidifies the recording material transported toward the transfer unit; a transport unit that transports the recording material from the humidifying unit to the transfer unit while guiding the recording material in contact with a guide unit; and a leakage suppressing unit that suppresses leakage of an alternating current of the alternating-current component to the guide unit throughout a maximum length or more of the recording material in a direction in which the recording material is transported.
    Type: Application
    Filed: February 26, 2019
    Publication date: March 12, 2020
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Masahiro KATAHIRA, Yoko MIYAMOTO
  • Patent number: 10261459
    Abstract: An image forming apparatus includes a transfer unit, a container, and a calculator. The transfer unit transfers to at least one recording medium at least one toner image formed in accordance with image data without margins set along edges of the at least one recording medium. The container contains toner collected from the transfer unit. The calculator calculates an amount of the toner of parts of the at least one toner image outside the edges of the at least one recording medium. A time period during which the container is able to be used is calculated in accordance with an accumulated amount of the toner calculated by the calculator.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: April 16, 2019
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Masahiro Katahira, Yoshinori Takahashi, Yasuto Okabayashi
  • Patent number: 10095162
    Abstract: A cleaner includes first and second cleaning plates. The first cleaning plate includes a first free end and performs cleaning by causing the first free end to be in contact with an outer circumferential surface of a cylindrical second transfer rotating body including an elastic layer, so that the outer circumferential surface is elastically deformed. The second cleaning plate includes a second free end and performs cleaning by causing the second free end to be in contact with a portion of the outer circumferential surface downstream of, in a rotational direction of the second transfer rotating body, a position where the first free end is in contact with the outer circumferential surface and where the outer circumferential surface is elastically deformed due to the contact of the outer circumferential surface with the first free end so as to have a smallest surface curvature in the outer circumferential surface.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: October 9, 2018
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Masahiro Katahira, Yoshinori Takahashi, Yuki Nagamori
  • Patent number: 10054879
    Abstract: An image forming apparatus includes a transfer unit and a static eliminating unit. The transfer unit transfers a toner image formed on an image holding body to a recording medium. The static eliminating unit is disposed downstream of the transfer unit in a transport direction in which the recording medium is transported, stores electric charge while the recording medium is passing through a recording medium transfer region, and releases the electric charge when a leading edge of the recording medium enters the recording medium transfer region.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: August 21, 2018
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Yoshinori Takahashi, Masahiro Katahira
  • Publication number: 20180143575
    Abstract: An image forming apparatus includes a transfer unit, a container, and a calculator. The transfer unit transfers to at least one recording medium at least one toner image formed in accordance with image data without margins set along edges of the at least one recording medium. The container contains toner collected from the transfer unit. The calculator calculates an amount of the toner of parts of the at least one toner image outside the edges of the at least one recording medium. A time period during which the container is able to be used is calculated in accordance with an accumulated amount of the toner calculated by the calculator.
    Type: Application
    Filed: May 31, 2017
    Publication date: May 24, 2018
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Masahiro KATAHIRA, Yoshinori TAKAHASHI, Yasuto OKABAYASHI
  • Publication number: 20180136592
    Abstract: An image forming apparatus includes a transfer unit and a static eliminating unit. The transfer unit transfers a toner image formed on an image holding body to a recording medium. The static eliminating unit is disposed downstream of the transfer unit in a transport direction in which the recording medium is transported, stores electric charge while the recording medium is passing through a recording medium transfer region, and releases the electric charge when a leading edge of the recording medium enters the recording medium transfer region.
    Type: Application
    Filed: June 5, 2017
    Publication date: May 17, 2018
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yoshinori TAKAHASHI, Masahiro KATAHIRA
  • Publication number: 20180046113
    Abstract: A cleaner includes first and second cleaning plates. The first cleaning plate includes a first free end and performs cleaning by causing the first free end to be in contact with an outer circumferential surface of a cylindrical second transfer rotating body including an elastic layer, so that the outer circumferential surface is elastically deformed. The second cleaning plate includes a second free end and performs cleaning by causing the second free end to be in contact with a portion of the outer circumferential surface downstream of, in a rotational direction of the second transfer rotating body, a position where the first free end is in contact with the outer circumferential surface and where the outer circumferential surface is elastically deformed due to the contact of the outer circumferential surface with the first free end so as to have a smallest surface curvature in the outer circumferential surface.
    Type: Application
    Filed: April 18, 2017
    Publication date: February 15, 2018
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Masahiro KATAHIRA, Yoshinori TAKAHASHI, Yuki NAGAMORI
  • Patent number: 9760043
    Abstract: A fixing device includes a fixing roller that fixes a toner image to a recording medium; a cleaning roller that contacts the fixing roller and rotates, and cleans off toner adhered to a surface of the fixing roller; and a collecting roller that contacts the cleaning roller and rotates, and collects toner adhered to a surface of the cleaning roller, the collecting roller including an air passage section that extends through the collecting roller in an axial direction of the collecting roller and through which air passes.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: September 12, 2017
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Yasuhiro Funayama, Masahiro Katahira, Yoshinori Takahashi, Yuki Nagamori
  • Publication number: 20170248880
    Abstract: A fixing device includes a fixing roller that fixes a toner image to a recording medium; a cleaning roller that contacts the fixing roller and rotates, and cleans off toner adhered to a surface of the fixing roller; and a collecting roller that contacts the cleaning roller and rotates, and collects toner adhered to a surface of the cleaning roller, the collecting roller including an air passage section that extends through the collecting roller in an axial direction of the collecting roller and through which air passes.
    Type: Application
    Filed: July 26, 2016
    Publication date: August 31, 2017
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yasuhiro FUNAYAMA, Masahiro KATAHIRA, Yoshinori TAKAHASHI, Yuki NAGAMORI
  • Patent number: 9690240
    Abstract: A fixing device includes a fixing member, a first roller, a second roller, a detector, and an adjustment unit. The fixing member fixes, on a recording medium, a toner image formed on the recording medium. The first roller performs cleaning of toner sticking to a surface of the fixing member. The second roller collects the toner sticking to a surface of the first roller. The detector detects a temperature of the second roller. The adjustment unit adjusts the temperature of the second roller on a basis of a result of detection performed by the detector.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: June 27, 2017
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Motoki Matsushima, Masahiro Katahira, Yuki Nagamori
  • Patent number: 8855519
    Abstract: A blowing device includes a blower that blows air and an air duct including an inlet and an outlet. The air duct takes in the air through the inlet and guiding the air so that the air flows out through the outlet toward a corona discharge unit including a target component toward which the air is to be blown. The outlet of the air duct includes a through-portion in a non-overlapping region thereof, the non-overlapping region being a region of the outlet excluding an overlapping region of the outlet. The overlapping region corresponds to an interposed component of the corona discharge unit, the interposed component being located between the outlet and the target component at a position at which the interposed component overlaps the overlapping region.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: October 7, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Masahiro Katahira, Yuki Nagamori
  • Publication number: 20140112689
    Abstract: An image forming apparatus includes an image carrier having an electrostatic latent image that is formed on the image carrier and that is developed into a toner image, an intermediate transfer belt to which the toner image on the image carrier is transferred, and a second transfer belt that transfers the toner image on the intermediate transfer belt to a transfer member via a second transfer section. The intermediate transfer belt and the second transfer belt are made of a thermoplastic resin. The hardness of the second transfer belt is set to be equal to or larger than that of the intermediate transfer belt. The contact angle of a pure water droplet on a surface of the second transfer belt is set to be larger than that on a surface of the intermediate transfer belt.
    Type: Application
    Filed: May 23, 2013
    Publication date: April 24, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventor: Masahiro KATAHIRA
  • Publication number: 20130108307
    Abstract: A blowing device includes a blower that blows air and an air duct including an inlet and an outlet. The air duct takes in the air through the inlet and guiding the air so that the air flows out through the outlet toward a corona discharge unit including a target component toward which the air is to be blown. The outlet of the air duct includes a through-portion in a non-overlapping region thereof, the non-overlapping region being a region of the outlet excluding an overlapping region of the outlet. The overlapping region corresponds to an interposed component of the corona discharge unit, the interposed component being located between the outlet and the target component at a position at which the interposed component overlaps the overlapping region.
    Type: Application
    Filed: May 14, 2012
    Publication date: May 2, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Masahiro KATAHIRA, Yuki NAGAMORI
  • Patent number: 8023878
    Abstract: A cleaning device includes a cleaning blade that contacts a surface of a member to be cleaned to remove a residue remaining on the surface of the member to be cleaned, and that includes multiple layers, wherein a leading end portion of the cleaning blade shifts in a separating direction from the surface of the member to be cleaned due to a difference in thermal expansion property among the multiple layers when temperature rises.
    Type: Grant
    Filed: August 19, 2009
    Date of Patent: September 20, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yuichi Fukuda, Noriaki Kojima, Makoto Sakanobe, Hiromi Nagai, Hiroaki Akamatsu, Masahiro Katahira
  • Patent number: 7899354
    Abstract: The present invention provides a cleaning device including a cleaning member that cleans a surface of a rotating cylindrical element to be cleaned, and whose length in a longitudinal direction is longer than a length of the maximum operating region of the element to be cleaned, a length of a contact part of the cleaning member at which the cleaning member contacts with the element to be cleaned being shorter than the length in the longitudinal direction of the cleaning member, and the contact part being moved in the longitudinal direction of the element to be cleaned.
    Type: Grant
    Filed: April 2, 2007
    Date of Patent: March 1, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Osamu Handa, Masahiro Katahira
  • Publication number: 20100247188
    Abstract: A cleaning device includes a cleaning blade that contacts a surface of a member to be cleaned to remove a residue remaining on the surface of the member to be cleaned, and that includes multiple layers, wherein a leading end portion of the cleaning blade shifts in a separating direction from the surface of the member to be cleaned due to a difference in thermal expansion property among the multiple layers when temperature rises.
    Type: Application
    Filed: August 19, 2009
    Publication date: September 30, 2010
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yuichi Fukuda, Noriaki Kojima, Makoto Sakanobe, Hiromi Nagai, Hiroaki Akamatsu, Masahiro Katahira
  • Patent number: 7729638
    Abstract: An image forming apparatus includes: an image carrier that rotates; and a charging member that is provided opposingly to the image carrier, and that charges a surface of the image carrier, wherein a discharge inhibitor that suppresses a discharge in an axial end portion is interposed in a portion where the charging member is opposed to the image carrier.
    Type: Grant
    Filed: September 17, 2007
    Date of Patent: June 1, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Masahiro Katahira, Osamu Handa
  • Publication number: 20080181666
    Abstract: An image forming apparatus includes: an image carrier that rotates; and a charging member that is provided opposingly to the image carrier, and that charges a surface of the image carrier, wherein a discharge inhibitor that suppresses a discharge in an axial end portion is interposed in a portion where the charging member is opposed to the image carrier.
    Type: Application
    Filed: September 17, 2007
    Publication date: July 31, 2008
    Inventors: Masahiro Katahira, Osamu Handa
  • Publication number: 20080075499
    Abstract: The present invention provides a cleaning device including a cleaning member that cleans a surface of a rotating cylindrical element to be cleaned, and whose length in a longitudinal direction is longer than a length of the maximum operating region of the element to be cleaned, a length of a contact part of the cleaning member at which the cleaning member contacts with the element to be cleaned being shorter than the length in the longitudinal direction of the cleaning member, and the contact part being moved in the longitudinal direction of the element to be cleaned.
    Type: Application
    Filed: April 2, 2007
    Publication date: March 27, 2008
    Inventors: Osamu Handa, Masahiro Katahira