Patents Examined by William J. Royer
  • Patent number: 11573507
    Abstract: In an example of the disclosure, a blanket servicing system includes a rotatably mounted endless cleaning surface and a scraper. The endless cleaning surface is to have a first engagement with a blanket to obtain a layer of thermoplastic print agent from the blanket. The endless cleaning surface is to have a second engagement with the blanket to receive residue from the blanket onto the layer of thermoplastic print agent. The scraper is to scrape the endless cleaning surface to transfer the residue from the endless cleaning surface to a collection element.
    Type: Grant
    Filed: September 16, 2021
    Date of Patent: February 7, 2023
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Amir Kedem, Michael Kokotov, Alex Feygelman, Guy Nesher, Nadav Shalem, Michael Vinokur
  • Patent number: 11567434
    Abstract: An image forming apparatus includes an image carrier that is capable of holding an image on a surface thereof while rotating, an image forming unit that forms the image on the image carrier, a transfer unit that transfers the image from the image carrier to a medium while rotating, a transport unit that circulates as the transfer unit rotates and that transports the medium to a transfer region while holding the medium, and a control unit that changes a timing at which the image forming unit forms the image in accordance with variation in a ratio of a rotation velocity of the transfer unit to a rotation velocity of the image carrier.
    Type: Grant
    Filed: December 7, 2021
    Date of Patent: January 31, 2023
    Assignee: FUJIFILM Business Innovation Corp.
    Inventor: Shinji Okuyama
  • Patent number: 11561500
    Abstract: A waste toner storage container includes a container body, a toner storage chamber, and a paddle. The toner storage chamber includes an introduction port, a first space, and a second space. The introduction port receives waste toner. The first space stores the introduced waste toner, and extends in a first direction. The second space is disposed in an end portion of the first space in a second direction orthogonal to the first direction. The paddle includes a shaft, a first plate, and a second plate. The shaft is disposed in the first space, extends along the first direction, and is elongated. The first plate is formed on an outer peripheral surface around a central axis of the shaft, and conveys the waste toner in the first direction. The second plate is formed on the outer peripheral surface of the shaft, and conveys the waste toner toward the second space.
    Type: Grant
    Filed: September 24, 2021
    Date of Patent: January 24, 2023
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Tokihiko Ise, Hiroki Sakurada
  • Patent number: 11561497
    Abstract: A cleaning device includes a housing, a cleaning blade, a toner conveyance path, a conveyance screw, a first flicker, and a second flicker. The conveyance screw includes a rotary shaft and a helical vane. The first flicker includes a first base portion and a plurality of first contact pieces. The second flicker includes a second base portion and a plurality of second contact pieces. An inclination angle ?1 has a value between an inclination angle ?2 and an inclination angle ?3.
    Type: Grant
    Filed: March 11, 2022
    Date of Patent: January 24, 2023
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Yosuke Saito, Ai Takagami, Nobuyuki Hayashi, Masaki Kadota
  • Patent number: 11556090
    Abstract: An image forming apparatus includes a main housing, a drawer, and a drum unit. The drawer is movable between an accommodated position at which the drawer is accommodated in the main housing and a pulled-out position at which the drawer is pulled out from the main housing. The drum unit is attachable to the drawer in a state where the drawer is located at the pulled-out position. The drum unit includes a first photosensitive drum, a second photosensitive drum, and a waste toner pipe allowing passage of waste toner from the first photosensitive drum and waste toner from the second photosensitive drum.
    Type: Grant
    Filed: August 24, 2021
    Date of Patent: January 17, 2023
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Shougo Sato
  • Patent number: 11556085
    Abstract: An image forming device, including: a drawer movable from an inside position where the drawer is located inside a housing to an outside position where the drawer is located outside the housing via an intermediate position; a stopper movable between a first position where the stopper stops the drawer from moving from the intermediate position to the outside position and a second position where the stopper allows the drawer to move from the intermediate position to the outside position; a drum cartridge mountable on the drawer; and a toner cartridge mountable on the drawer; wherein the toner cartridge mounted on the drawer is detachable from the drawer in a state in which the drawer is located at the intermediate position, and wherein the drum cartridge mounted on the drawer is detachable from the drawer in a state in which the drawer is located at the outside position.
    Type: Grant
    Filed: December 17, 2021
    Date of Patent: January 17, 2023
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Kazuna Taguchi, Shougo Sato
  • Patent number: 11543763
    Abstract: A transfer unit includes, as transfer rollers, a first roller and a second roller of which the latter has an elastic layer larger in an axial direction than that of the former, a first bearing member, a second bearing member, a roller holder, a first urging member, a second urging member, a switching cam, a transfer voltage power supply, and a driving mechanism. By rotating the roller holder, one of the first and second rollers is arranged opposite an image carrying member and, by rotating the switching cam, the first or second roller arranged opposite the image carrying member is arranged either at a reference position at which, by being kept in pressed contact with the image carrying member, the first or second roller forms a transfer nip or at a released position at which the first or second roller lies away from the image carrying member.
    Type: Grant
    Filed: January 19, 2022
    Date of Patent: January 3, 2023
    Assignee: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventors: Masayuki Yamada, Yuya Shimohora, Masaru Takagi, Takehiro Sato
  • Patent number: 11537067
    Abstract: An intermediate transfer unit includes an intermediate transfer belt, a driving roller, a tension roller, and a roller supporting frame. The roller supporting frame includes first and second supporting frames, and has a coupling portion formed on it. The coupling portion includes a rotary shaft and a shaft hole. The roller supporting frame shifts from a first state to a second state by rotating the first supporting frame in the forward direction to have the intermediate transfer belt wound around it. The rotary shaft includes a projection. A shaft hole has a restricting wall portion. As the first supporting frame in the second state rotates in the forward direction, the projection makes contact with the restricting wall portion to restrict rotation of the first supporting frame in the forward direction.
    Type: Grant
    Filed: March 22, 2022
    Date of Patent: December 27, 2022
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Tatsuro Arata
  • Patent number: 11537071
    Abstract: An image forming apparatus includes a belt, tension rollers, an outer member, a pressing member, a moving mechanism, and an attachable unit. The belt bears a toner image and the tension rollers stretch the belt around rollers. The toner image is transferred at the outer member from the belt onto a recording material. The moving mechanism moves the pressing member to press an inner surface of the belt toward an outer surface side. The attachable unit includes the pressing member or the belt and attaches to and detaches from the image forming apparatus. A mode is executed in which the pressing member presses the belt to transfer the toner image onto the recording material. Information is stored based on an individual difference of the attachable unit related to a setting of a moving mechanism position in executing the mode, where the setting is based on the stored information.
    Type: Grant
    Filed: December 9, 2021
    Date of Patent: December 27, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shinya Kitago
  • Patent number: 11531286
    Abstract: An image forming apparatus is capable of suppressing deterioration in accuracy of control for switching a motor from forward to reverse rotation in a configuration in which a coupling having play in a rotation direction is interposed in a drive train between the motor and a driven member. The image forming apparatus includes a motor that rotationally drives a photosensitive drum and a developing sleeve; a coupling interposed in a drive train between the motor and the developing sleeve and/or a drive train between the motor and the photosensitive drum and having play in a rotation direction; and a CPU that controls the motor. The CPU rotates the motor forward at a speed V1 at the time of image formation, stops the motor after the end of the image formation, rotates the motor forward at a speed V2 lower than the speed V1, and then reversely rotates the motor.
    Type: Grant
    Filed: December 1, 2021
    Date of Patent: December 20, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Keita Shigihara, Yuichi Tanabe
  • Patent number: 11526103
    Abstract: An image forming apparatus includes a first image forming portion, a second image forming portion, a belt, a charging voltage applying portion, and a transfer voltage applying portion. With respect to a movement direction of a recording material, the first image forming portion is provided upstream of the second image forming portion. In an image forming operation, a potential difference between a first transfer voltage and a potential at a first transfer portion, which is formed on a first image bearing member and does not form the image, is greater than a potential difference between a second transfer voltage and a potential at a second transfer portion, which is formed on a second image bearing member and does not form an image.
    Type: Grant
    Filed: November 15, 2021
    Date of Patent: December 13, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroki Tanaka, Satoru Motohashi, Nobuo Oshima, Akihisa Matsukawa, Katsuichi Abe, Takayuki Namiki
  • Patent number: 11526094
    Abstract: A charging device includes: a charging roller to charge a surface of the image carrier by rotating in contact with an image carrier; a cleaning roller to clean a surface of the charging roller by rotating in contact with the charging roller; a bearing to hold the charging roller and the cleaning roller so that a distance between an axis of the charging roller and an axis of the cleaning roller is constant; and a biaser to apply a biasing force to the bearing in a direction to bring the charging roller into press contact with the image carrier, wherein the bearing has a first bearing to support the axis of the cleaning roller and a second bearing to support the axis of the charging roller, and the first bearing is disposed inward from the second bearing in a roller axial direction of the cleaning roller and the charging roller.
    Type: Grant
    Filed: February 16, 2022
    Date of Patent: December 13, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Katsumi Adachi
  • Patent number: 11526101
    Abstract: A control portion controls a change mechanism so as to pass through a third stretched form in switching a stretched form of a belt member from a second stretched form to a first stretched form. The first stretched form is a stretched form enabling a toner image to be transferred from a photosensitive drum to the belt member by positioning a transfer member at a first position and a separation roller at a second position. The second stretched form is a stretched form of separating each of the transfer member and the separation roller from a transfer surface toward an opposite side of the photosensitive drum. The third stretched form is a stretched form in which the transfer member is positioned at the first position, and the separation roller is positioned at a third position away from the transfer surface toward the opposite side of the photosensitive drum.
    Type: Grant
    Filed: August 31, 2021
    Date of Patent: December 13, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takao Nakajima
  • Patent number: 11526115
    Abstract: An image forming apparatus includes a photosensitive drum, a development roller configured to supply developer to the photosensitive drum, a transfer roller configured to transfer a developer image formed on the photosensitive drum to a recording material, and a cleaning roller being in contact with the photosensitive drum, configured to clean a part of the recording material adhered to the photosensitive drum, wherein a diameter of the transfer roller is greater than a diameter of the development roller and the diameter of the transfer roller is greater than a diameter of the cleaning roller.
    Type: Grant
    Filed: November 23, 2021
    Date of Patent: December 13, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Atsushi Toda, Hisashi Taniguchi, Bunro Noguchi, Shunsuke Matsushita
  • Patent number: 11526104
    Abstract: An image forming apparatus includes an image bearing member, a transfer member, a voltage applying portion applying a voltage to the transfer member, and a controller. The controller starts a control operation by applying a control voltage to the transfer member before a toner image is transferred to a transferred member from the image bearing member. On the basis of a coverage ratio indicating a ratio occupied by an image region per predetermined area regarding the toner image transferred to the transferred member from the image bearing member, the controller determines execution or non-execution of the control operation capable of being started before the toner image is transferred to the transferred member.
    Type: Grant
    Filed: October 11, 2021
    Date of Patent: December 13, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masaki Shimomura, Yoshiro Saito
  • Patent number: 11520254
    Abstract: A transfer unit includes, as transfer rollers, first and second rollers of which the second has an elastic layer larger in an axial direction than the first, first and second bearing members, a roller holder, first and second urging members, a switching cam, a driving mechanism, and a first pre-transfer guide. By rotating the roller holder, the first or second roller is arranged opposite an image carrier and, by rotating the switching cam, the first or second roller arranged opposite the image carrier is arranged selectively either at a reference position where the first or second roller is in pressed contact with the image carrier or at a released position where the first or second roller lies away from the image carrier. With the first or second roller arranged at the reference position, the first pre-transfer guide is arranged at a first guide position.
    Type: Grant
    Filed: January 18, 2022
    Date of Patent: December 6, 2022
    Assignee: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventors: Masaru Takagi, Masayuki Yamada, Yuya Shimohora, Takehiro Sato
  • Patent number: 11520274
    Abstract: A cleaning device includes a housing, a cleaning blade, a toner conveyance path, a conveyance screw, and a first flicker. The conveyance screw includes a rotary shaft and a helical vane. The first flicker includes a first base portion and a plurality of first contact pieces and uses the first contact pieces to press the conveyance screw in a first direction away from a bottom part of the toner conveyance path. The first base portion includes a secured portion and a blade opposed portion. The first contact pieces are connected to an upper end part of the blade opposed portion. An elastic member is disposed between the cleaning blade and the blade opposed portion.
    Type: Grant
    Filed: March 14, 2022
    Date of Patent: December 6, 2022
    Assignee: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventors: Ai Takagami, Yosuke Saito, Nobuyuki Hayashi, Masaki Kadota
  • Patent number: 11520276
    Abstract: A charging device includes a charging member that is rotatable and contacts and electrically charges a surface of a charging target member; and a cleaning member that is rotatable and cleans a surface of the charging member, wherein the cleaning member includes a core bar extending in a lengthwise direction, a foam member that is helically wound around the core bar while forming a gap in the lengthwise direction and contacts the charging member, and a first adhesive agent that is provided between the foam member and the core bar, the first adhesive agent contacting a part of the foam member and another part of the foam member that are formed to adjoin each other in the lengthwise direction via the gap.
    Type: Grant
    Filed: August 17, 2021
    Date of Patent: December 6, 2022
    Assignee: Oki Electric Industry Co, Ltd.
    Inventors: Takaaki Ebe, Yoshihiro Hashimoto, Daiki Morimoto
  • Patent number: 11520255
    Abstract: A transfer unit includes first and second rollers of which the second roller has an elastic layer larger in the axial direction than the first roller, a roller holder, and a switching cam. One of the first and second rollers is, by rotating the roller holder, arranged opposite an image carrying member and, by rotating the switching cam, arranged selectively either at a reference position to form a transfer nip or at a released position to lie away from the image carrying member. Let a length of the elastic layer of the first roller in the axial direction, a width of an effective image area on the image carrying member to which a toner image can be transferred, and a width of a recording medium of a maximum size allowing transfer using the first roller be L1, L3, and L4 respectively, L4<L1?L3?5 mm is fulfilled.
    Type: Grant
    Filed: January 20, 2022
    Date of Patent: December 6, 2022
    Assignee: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventors: Takehiro Sato, Masayuki Yamada, Masaru Takagi, Yuya Shimohora
  • Patent number: 11520277
    Abstract: A cleaning body includes a core, a foam elastic layer that is disposed to be wound around an outer peripheral surface of the core in a helical shape from one end to the other end of the core, and an adhesive layer that adheres the core and the foam elastic layer, in which a diameter of a tip portion of a cell skeleton protruding on a surface of the foam elastic layer is equal to or less than 50 ?m, and in a case where an inner peripheral length of the foam elastic layer in a cross section of the core in a radial direction is X (mm) and a thickness of the foam elastic layer is Y (mm), a value of X×Y2 is equal to or greater than 45.
    Type: Grant
    Filed: May 19, 2022
    Date of Patent: December 6, 2022
    Assignee: FUJIFILM Business Innovation Corp.
    Inventor: Fuyuki Kano