Patents Examined by Hoan Tran
  • Patent number: 10268156
    Abstract: A technique enabling downsizing of an image forming apparatus is provided. A cleaning unit 13 attachable to and detachable from an apparatus main body of an image forming apparatus 100 that forms an image on a recording material 12 is provided, with this cleaning unit 13 including: a photosensitive drum 1; and a cleaning frame body 14 that supports the photosensitive drum 1 and that includes an opening 14c through which laser light 3c for exposing the photosensitive drum 1 can pass, wherein the opening 14c is configured such that a width of the opening 14c in a scanning direction in an irradiation range of the light for exposing the photosensitive drum 1 becomes greater toward a side of the photosensitive drum 1 from a side of a light source of light for exposing the photosensitive drum 1.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: April 23, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshiaki Takeuchi, Takahito Ueno, Yuuki Nakamura, Kensuke Suzuki
  • Patent number: 10254687
    Abstract: A fixing apparatus includes a heating rotating member, a pressure rotating member, and a contact member. A contact holding member holds the contact member so that the contact member presses against the heating rotating member, and causes at least a portion of the contact member to elastically deform between the heating rotating member and the contact holding member. In addition, a displacement mechanism displaces a relative position of the heating rotating member with respect to the pressure rotating member. When the heating rotating member is separated from the pressure rotating member by the displacement mechanism, an interval between a fulcrum, at which the contact holding member holds the contact member, and a contact point, at which the contact member comes into contact with the heating rotating member, does not increase.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: April 9, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kohei Wakatsu, Takashi Narahara, Takeshi Shinji, Kazuhiro Doda, Yutaka Sato
  • Patent number: 10241454
    Abstract: An image forming apparatus includes: a first fixing member; a second fixing member; a holding member; a cam member; an urging member; a spring member; a drive source; a transmission section; a regulating member; and a controller. The cam member is rotatable about an axis in a first direction and a second direction opposite to the first direction. The spring member has one end portion movable in interlocking relation with the cam member and another end portion whose movement is regulated by the regulating member. The spring member suppresses rotation of the cam member in the first direction while storing a restoring force by the rotation of the cam member in the first direction; and facilitates rotation of the cam member in the second direction while releasing the restoring force by the rotation of the cam member in the second direction.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: March 26, 2019
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Shota Shinoya, Yasuhiro Suzuki
  • Patent number: 10241466
    Abstract: An image forming apparatus includes a body casing, a pressing member, a process cartridge, and a drawer. The body casing includes a positioning member. The pressing member is disposed inside the body casing. The process cartridge includes a photosensitive drum. The drawer is configured to support the process cartridge and to move, in a sliding direction orthogonal to an axis direction of the photosensitive drum, between an inside position that is a position inside the body casing and an outside position that is a position outside the body casing. The process cartridge includes an engagement portion and a spring. The engagement portion is configured to be positioned by the positioning member. The spring is configured to be pressed by the pressing member such that the engagement portion is pressed toward the positioning member.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: March 26, 2019
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Shougo Sato
  • Patent number: 10222722
    Abstract: A toner storing container stores toner and is provided attachable to and detachable from an image forming apparatus. The toner storing container includes: a container body that includes an opening, and an inner circumferential surface extending toward the opening around a center line extending in one direction; and a toner conveyer that is attached onto the inner circumferential surface of the container body. The toner conveyer projects inward from the inner circumferential surface as well as spirally extends in the one direction around the center line.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: March 5, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventors: Tomoyoshi Yukimoto, Taisuke Minemura, Masayuki Satou, Yoshiyuki Toso, Shoichi Yoshikawa
  • Patent number: 10222737
    Abstract: An image forming apparatus includes: a main body casing; a photosensitive drum; a support member; a belt unit; a transfer roller; and a second sheet guide. The support member is movable between a first accommodated position and a first withdrawn position. The belt unit is movable between a second accommodated position and a second withdrawn position. The belt unit includes: a first sheet guide; and a transfer belt. The belt unit is movable together with the support member. The second sheet guide is positioned below the belt unit and faces the first sheet guide to define a sheet conveying path between the first sheet guide and the second sheet guide in a state where the belt unit is at the second accommodated position. The second sheet guide is configured to convey a sheet along the sheet conveying path toward a position between the transfer belt and the transfer roller.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: March 5, 2019
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Yukiko Kitamura, Takashi Arakawa, Shougo Sato
  • Patent number: 10216138
    Abstract: A developing cartridge includes: a lever movable between a first position and a second position; an urging member urging the lever toward the first position; a gear; and a first and a second protrusions that are rotatable together with the gear. During rotation of the gear from a first rotational position to a second rotational position, the first protrusion moves the lever to the second position against urging force of the urging member and then the lever moves to the first position at a first speed while contacting the first protrusion. During rotation of the gear from the second rotational position to a third rotational position, the second protrusion moves the lever to the second position against the urging force. When the gear reaches the third rotational position, the urging force moves the lever to the first position at a second speed higher than the first speed.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: February 26, 2019
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Keita Shimizu
  • Patent number: 10216139
    Abstract: An image forming apparatus is described. An image forming apparatus may include an image forming apparatus body and a tandem type photosensitive unit slidable with respect to the body, wherein the unit includes: a frame; a plurality of photosensitive bodies; a plurality of developer cartridges, including developer carriers, detachably mountable on the frame; and a pressing portion provided on the frame for pressing each of the cartridges so that the developer carrier thereof is directed toward the corresponding photosensitive body, each of the cartridges is pivoted to be movable to an imaging position pressed by the pressing portion and a detached position released from the pressing by the pressing portion, and the body is provided with an abutting portion abutting the cartridge located on the detached position thereby pivoting the cartridge and moving the same to the imaging position when the unit is mounted on the body.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: February 26, 2019
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Yasushi Okabe, Junichi Hashimoto, Isao Kishi
  • Patent number: 10209660
    Abstract: Provided is an image formation device for forming a toner image as an image to be printed on a sheet to transfer and fix the unfixed toner image onto the sheet, wherein a density adjustment setting of optionally adjusting a density of a printed image by a user is provided as a printing condition, and a toner increase mode for applying, to the sheet, more toner than that in a case of selecting a maximum density selectable in the density adjustment setting is provided as a printing mode.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: February 19, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventor: Masanori Murakami
  • Patent number: 10209646
    Abstract: An image forming apparatus includes: an image carrier that rotates while carrying a toner image; an image former that forms the toner image; a transfer roller that transfers the toner image to a recording medium; and a bias voltage applier that applies a voltage to the transfer roller, wherein the image former forms transfer images and forms a patch image with toner between a first transfer image and a second transfer image, and the bias voltage applier applies a first voltage having a polarity opposite to a charge polarity of the toner to the transfer roller, applies a second voltage having the polarity opposite to the charge polarity of the toner and larger than the first voltage to the transfer roller, and applies a third voltage having the polarity opposite to the charge polarity of the toner and smaller than the second voltage to the transfer roller.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: February 19, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventors: Kazuyoshi Ota, Hiroaki Umemoto, Futoshi Okazaki, Hidetoshi Noguchi, Masanori Kawada
  • Patent number: 10209642
    Abstract: A charge roller in an image-forming apparatus of a DC electrification mode mitigates occurrence of black lines and prevents fogging. The charge roller has a core, an elastic layer on the core, and a surface treatment layer on the surface of the elastic layer. The elastic layer is a vulcanized rubber composition containing a rubber base mainly containing an epichlorohydrin-based rubber, and additives including a conductivity-imparting agent, an inorganic filler, a vulcanization accelerator, and a vulcanizing agent. The ratio of the conductivity-imparting agent and the inorganic filler, to the entire rubber composition, is 11 mass % or less. The surface treatment layer is formed by impregnating the elastic layer with a surface treatment liquid prepared by dissolving an isocyanate compound in an organic solvent. The roller has a roller surface roughness Rz of 10 ?m or less.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: February 19, 2019
    Assignee: SYNZTEC CO., LTD.
    Inventors: Yuka Moriyasu, Hiroshi Ogura, Tomohiro Murata
  • Patent number: 10209668
    Abstract: An image forming apparatus in which a developer bearing member is disposed below a cleaning member, which cleans a charging member, so as to overlap with the cleaning member when viewed in a vertical direction and includes a base body and an elastic layer covering the base body and having a width in a longitudinal direction of the developer bearing member that accommodates the entire region of the cleaning member in the longitudinal direction. In the longitudinal direction, the cleaning member is disposed at a position where the entire region thereof in the longitudinal direction is accommodated in the width of the elastic layer.
    Type: Grant
    Filed: April 2, 2018
    Date of Patent: February 19, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akihisa Matsukawa, Toshiki Okamura, Kuniaki Tamagaki, Takanori Watanabe, Hiroyoshi Iwayama, Makoto Tokudome, Hideo Kihara, Naoki Hayashi
  • Patent number: 10209656
    Abstract: An image forming apparatus includes a first printer section configured to form an image on a sheet using decolorable toner which is decolored by heating thereof, a second printer section configured to form an image on the sheet using non-decolorable toner, a heating section configured to heat the sheet on which the image is formed, and a controller configured to control the operation of the image forming apparatus based on an electric energy value which is an integrated value of power consumed within a predetermined time period.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: February 19, 2019
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Masaaki Wakamatsu
  • Patent number: 10197960
    Abstract: An image forming apparatus includes a main assembly, a first openable portion provided on a first side of the main assembly, a second openable portion provided on a second side of the main assembly, a single projector portion, a first projecting portion configured to project the image from above the first openable portion onto a projection object provided on the first side or onto the first openable portion when the first openable portion is open, and a second projecting portion configured to project the image from above the second openable portion onto a projection object provided on the second side or onto the second openable portion when the second openable portion is open.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: February 5, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kotaro Torikata, Dai Kanai, Teppei Nagata, Hideki Mori, Makoto Matsuo, Jun Shirayanagi, Kenta Koyama, Hideki Takaoka, Masatoshi Lin
  • Patent number: 10197966
    Abstract: An image forming apparatus includes image forming stations including respective electrophotographic photosensitive drums; an image transfer belt contactable to the drums; image transfer rollers, contactable to the transfer belt to urge the belt to the drums for transferring the toner images from the drums onto the belt, the rollers being provided with respective rotational shafts about an axis of which the rollers are rotatable; and a slidable member slidable in a direction in which the stations are arranged to retract the rollers away from the corresponding drums, the slidable member being provided with inclined surfaces contactable to the shafts, the inclined surfaces being disposed at such positions that the rollers are retracted from respective drums sequentially with the movement of the slidable member in the direction.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: February 5, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomomichi Kawashima, Takayuki Miyamoto
  • Patent number: 10197945
    Abstract: A process unit has an image carrying unit having an image carrying member configured to be rotatable about a first axis extending in a first direction, and a developing agent removing member, a developing unit having a developing agent carrying member configured to be rotatable about a second axis parallel to the first axis, and a waste developing agent collecting unit configured to collect the developing agent removed by the removing member from the image carrying member. The waste developing agent collecting unit is arranged on one side in the first direction with respect to the developing unit such that the waste developing agent collecting unit faces the developing unit, and the developing unit is connected to the waste developing agent collecting unit such that the developing unit being movable in a second direction which is perpendicular to the first direction with respect to the waste developing agent collecting unit.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: February 5, 2019
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Shougo Sato
  • Patent number: 10197959
    Abstract: A fixing device includes a roller, an endless belt, and a heat generating member disposed in a space inside the endless belt, extending in a width direction of the endless belt, and pressing the endless belt against the roller. A sheet is passed through a nip formed between the roller and a portion of the endless belt pressed by the heat generating member, such that an image on the sheet is fixed thereto. The heat generating member includes a first heat generating portion, and a pair of second heat generating portions, the first generating portion being between the pair of second heat generating portions in the width direction, and the first heat generating portion is independently operable with respect to the pair of second heat generating portions.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: February 5, 2019
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Osamu Takagi
  • Patent number: 10191406
    Abstract: A rotatable member for use with a rotatable driving member provided in a process cartridge or an electrophotographic image forming apparatus includes a hollow cylindrical rotation shaft engageable with the rotatable driving member. The rotation shaft includes a seam extending from one end to the other end thereof in an axial direction thereof. The rotation shaft includes a transmitting surface engageable with the driving member and configured to receive a driving force for rotating the rotation shaft about the axial direction. The transmitting surface is twisted or inclined with respect to the axial direction.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: January 29, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koji Yamaguchi, Fumito Nonaka, Hiroomi Matsuzaki, Makoto Hayashida
  • Patent number: 10185268
    Abstract: An image forming apparatus includes: an image bearing member to which a toner is supplied; a cleaning blade that removes the toner supplied onto the image bearing member; a hardware processor that performs control such that a tonner pattern for cleaning blade inspection is formed on the image bearing member; and a detector for detecting a toner that has slipped through the cleaning blade after the toner pattern has been allowed to reach the cleaning blade. The hardware processor performs control such that a contact portion of the cleaning blade with the image bearing member becomes a state in which slipping of a toner readily occurs, and identifies a defective site in the contact portion on the basis of a detected result by the detector.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: January 22, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventor: Shigetaka Kurosu
  • Patent number: 10185261
    Abstract: In accordance with an embodiment, an image forming apparatus encompasses a heat roller, a lamp, a use amount acquisition section, a switching controller and a cycle controller. The heat roller heats a sheet printed with a toner image. The lamp heats the heat roller. The use amount acquisition section acquires a use amount of the lamp. The switching controller repeats a processing from a moment at which the lamp is charged until the lamp is charged next after the lamp is not charged in a predetermined control cycle. The cycle controller sets the cycle based on the use amount.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: January 22, 2019
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Ken Iguchi