Patents Examined by Sophia S. Chen
  • Patent number: 10539915
    Abstract: A drum unit includes a photosensitive drum in a coupling member. The coupling member includes an engageable member having a driving force receiving portion which is capable of entering a recess of a driving shaft to receive a driving force for rotating photosensitive drum. The coupling member includes a holding member configured to hold said engageable member so as to be slidable at least in a radial direction of said drum unit.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: January 21, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomonori Mori, Tetsuo Uesugi
  • Patent number: 10539919
    Abstract: A cabinet structure includes multiple cover members configured to spatially partition an inside from an outside of a cabinet, and a clearance communicating between the inside and the outside of the cabinet is left between two cover members, the two cover members being adjacent to each other, of the cover members, and a passage defined by the clearance and leading from the inside to the outside of the cabinet through the clearance has a shape with multiple bends.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: January 21, 2020
    Assignee: Ricoh Company, Limited
    Inventors: Naoki Matsuda, Masahiro Ishida
  • Patent number: 10539905
    Abstract: An image forming apparatus: includes a developing member to be movable between a development position where the developing member contacts an image bearing member and a separated position where the developing member is separated from the image bearing member; and a control portion controls the number of rotations of a drive portion by causing a light source to emit a light beam when a rotating polygon mirror starts to rotate, and detecting the light beam emitted from the light source by a detecting portion, wherein when the rotating polygon mirror starts to rotate, the light beam does not enter an image region of the image bearing member and the light beam is detected outside the image region of the image bearing member by the detecting portion, in a state of the developing member having moved from the separating position to the development position.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: January 21, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hidehiro Wakamiya
  • Patent number: 10539903
    Abstract: Provided is an optical scanning device, which includes a bottomed box-like casing (31) in which a ceiling side is opened, a rotating polygon mirror (35) housed in the casing (31) to deflect and scan light beams emitted from a light source, a driving motor (41) fixed to a bottom wall of the casing (31) to drive the rotating polygon mirror (35), and a lid member (37) that closes the ceiling side of the casing (31) and is fixed to the casing (31) via a fixing mechanism (311), wherein the fixing mechanism (311) is provided adjacent to a minimum separation part (B) of a sidewall of the casing (31) in which a distance from the rotating polygon mirror (35) is minimum.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: January 21, 2020
    Assignee: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventor: Hiroyuki Tomioka
  • Patent number: 10534313
    Abstract: Control to drive and stop developing roller is effected. A cartridge includes a drive transmission member movable between a transmitting position capable of transmitting the driving force toward a developing roller and a blocking position capable of blocking the transmission of the driving force to the developing roller.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: January 14, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Sohta Sugimoto, Masaaki Sato
  • Patent number: 10534310
    Abstract: The present disclosure provides a cleaning blade capable of improving chipping resistance. A cleaning blade includes a blade part made of polyurethane and having an edge that comes in slidable contact with a mating part. The edge includes: a base material containing polyurethane; an impregnated layer containing polyurethane in the base material and a cured acrylic product and present from the surface through to the inside of the base material; and a particle layer containing particles supported by the surface of the base material. The average particle diameter of the particles is between 3 nm and 100 nm, inclusive. The thickness of the impregnated layer is 30 nm or greater and less than 1000 nm. The edge has an area ratio of the particle layer to the impregnated layer that is between 5% and 30%, inclusive in a cross section perpendicular to the surface of the base material.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: January 14, 2020
    Assignee: Sumitomo Riko Company Limited
    Inventors: Manabu Sakuda, Satoshi Endo, Kazushi Yamaguchi
  • Patent number: 10534312
    Abstract: A developing cartridge includes: a housing extending in a first direction; a developing roller; a memory held at the housing; a holder holding an electrical contact surface; and a relay component electrically connecting the memory to the electrical contact surface. The developing roller is rotatable about an axis extending in the first direction. The developing roller is positioned at one end portion of the housing in a second direction. The holder is movable relative to the housing in at least one of the second direction and a third direction crossing the first direction and the second direction. The third direction also crosses the electrical contact surface.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: January 14, 2020
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Junichi Yokoi
  • Patent number: 10527988
    Abstract: An image forming apparatus includes a transfer unit that transfers a toner image to a recording medium; a non-white toner image forming unit that forms a non-white toner image on the transfer unit by using non-white toner having a non-white color that differs from white; a white toner image forming unit that forms a white toner image on the transfer unit by using white toner that is white in color after the non-white toner image is formed on the transfer unit; and a control unit that controls an amount of the white toner used by the white toner image forming unit to form the white toner image so that the amount of the white toner is smaller when the non-white toner image is formed under the white toner image than when no toner image is formed under the white toner image.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: January 7, 2020
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Fumiyuki Honda, Miho Ikeda, Daisuke Nakai, Aya Kakishima, Shinji Okuyama, Yoshiki Shimodaira
  • Patent number: 10520850
    Abstract: An image forming apparatus includes circuitry, a reader, and an exposure device that drives lighting elements aligned in a main scanning direction to form a first test image. The circuitry acquires density of first sub-areas, into which the first test image is divided in the main scanning direction, and calculates first correction data based on density of each of the first sub-areas and average density of the first sub-areas, to correct light amounts of the lighting elements. The exposure device forms a second test image with the light amounts corrected. The circuitry acquires density of second sub-areas, into which the second test image is divided in the main scanning direction, and calculates second correction data based on density of a second sub-area adjacent to each of the second sub-areas, to further correct the light amounts. The second sub-areas are differently located from the first sub-areas in the main scanning direction.
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: December 31, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroaki Nishina, Koichi Murota, Yoshinobu Sakaue, Masashi Suzuki, Susumu Narita, Takuma Nishio, Ryo Sato
  • Patent number: 10520848
    Abstract: When a photosensitive member and a developing portion are in a separation state and in a start-up period, a first light emission is performed in an image region and a non-image region. When light is detected at least twice during a period when the first light emission is being performed, a second light emission is performed in the non-image region. When a prescribed period of time has elapsed from the start of the second light emission, a third light emission is performed in the image region in a third light emission amount that is smaller than a second light emission amount during a period in which the photosensitive member makes at least one revolution. After the third light emission is performed, the photosensitive member and the developing portion are switched to a contact state.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: December 31, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Satoshi Ishida, Takeshi Shimba, Tatsuya Hotogi
  • Patent number: 10520864
    Abstract: An image forming apparatus includes an image forming portion that forms an image on a recording material, and a fixing portion including a cylindrical heat transfer member, and a heating member contacting an inner surface of the heat transfer member. The fixing portion fixes the image on the recording material by heating the recording material, on which the image has been formed, by heat from the heating member through the heat transfer member. A control unit controls a target temperature of the heating member, and analyzes whether or not a plurality of pixels, of image data corresponding to the image to be formed on the recording material, in each interval corresponding to a circumferential length of the heat transfer member, with respect to a recording material feeding direction, are pixels for forming an image with a predetermined density or more, and sets the target temperature depending on an analyzation result.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: December 31, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Sho Taguchi, Masashi Tanaka, Tatsuya Kinukawa, Naofumi Murata
  • Patent number: 10520863
    Abstract: The cleaning member is disposed to be opposite to the first roller with the second roller being provided therebetween. Compared to a case when the second roller is placed at a first position on a side of the first roller, if the second roller is placed at a second position on a side of the cleaning roller, a pressure between the second roller and the first roller becomes smaller, and a pressure between the second roller and the cleaning member becomes larger.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: December 31, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Kousuke Namisaki, Kan Mukai
  • Patent number: 10520876
    Abstract: An image forming apparatus includes a height determining member that performs the positioning of a holder in a height direction. When the holder is not mounted, the height determining member is assembled to a predetermined frame member to serve as a part of the predetermined frame member.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: December 31, 2019
    Assignee: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventor: Kuniaki Araishi
  • Patent number: 10520849
    Abstract: An image forming apparatus includes: a photosensitive member; a charger unit configured to charge the photosensitive member; an exposing unit configured to form a latent image by scanning the photosensitive member by laser light which has a different spot diameter in accordance with a scanning position of the photosensitive member in a main scanning direction; a developing unit configured to develop an image by adhering a toner to the photosensitive member on which the latent image is formed; and a control unit configured to control a luminance of the laser light and a resolution of the photosensitive member in a sub-scanning direction in accordance with the scanning position of the photosensitive member in the main scanning direction.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: December 31, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yusuke Shimizu, Kenichi Iida, Hikaru Osada, Tomoo Akizuki
  • Patent number: 10520879
    Abstract: A developing cartridge includes a developing roller rotatable about a first axis extending in an axial direction of the developing roller, a casing having an outer surface positioned at one end of the casing in the axial direction, an electrode electrically connected to the developing roller and positioned at the outer surface, the electrode extending in the axial direction, a gear, a protrusion, and an adapter having an electric conductivity and detachably attachable to the electrode, the adapter being electrically connected to the electrode in a state where the adapter is attached to the electrode. A total length of the electrode and the adapter in the axial direction in the state where the adapter is attached to the electrode is greater than a length in the axial direction of the electrode in a state where the adapter is detached from the electrode.
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: December 31, 2019
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Tsubasa Kiriyama
  • Patent number: 10514638
    Abstract: A fixing device includes a first rotatable member and a second rotatable member for forming a nip for fixing a toner image on a recording material, a heating portion for heating the first rotatable member, a first sensor for detecting a temperature of a longitudinally central portion of the first rotatable member, a second sensor for detecting a temperature of one longitudinal end portion of the first rotatable member, and a controller for controlling energization to the heating portion using a detection temperature of the first sensor and a detection temperature of the second sensor in a case that the recording material is an envelope having a predetermined width or more.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: December 24, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventor: Daigo Matsuura
  • Patent number: 10509342
    Abstract: A powder container includes a powder storage configured to store powder and having side walls with through-holes; a hollow member including a hollow part; held parts disposed at both ends of the hollow member in an axial direction of the hollow member; a coil configured to be held by the hollow member; holders configured to hold the held parts of the hollow member; and a piercing shaft configured to be inserted into the hollow part of the hollow member from outside of the powder container through one of the through-holes.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: December 17, 2019
    Assignee: Ricoh Company, Ltd.
    Inventor: Hiroaki Nieda
  • Patent number: 10509354
    Abstract: An image forming apparatus includes a sensor assembly having a window and a sensor which senses a developer through the window, and a shutter device which opens and closes the window, and thereby sensing in a sensible state is maintained, and a lifetime thereof is extendable.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: December 17, 2019
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Sung Weon Song, Young Min Yoon
  • Patent number: 10509358
    Abstract: An image formation apparatus having a lubricant application apparatus applying lubricant to an image carrier in an image former, in which the lubricant application apparatus includes: a lubricant stick; an application member disposed on an upstream side in an advancing direction of the image carrier surface with respect to a cleaning apparatus pressing lubricant supplied to the image carrier to form a film, supplying lubricant scraped off from the lubricant stick to the image carrier, and removing residual toner adhering to the image carrier; and a recovery member in contact with the application member, and recovering toner adhering to the application member, and the image formation apparatus includes a hardware processor controlling a lubricant amount on the image carrier by changing each of removability of residual toner on the image carrier by the application member, and recoverability of residual toner on the application member by the recovery member.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: December 17, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventor: Kuniaki Kashiwakura
  • Patent number: 10503102
    Abstract: A drive transmitting device, which is included in an image forming apparatus, includes a drive source, a drive transmitting body, and a rotary shaft. The drive transmitting body has a press-in target portion. The rotary shaft includes a press-in portion mounted on one end of the rotary shaft in an axial direction of the rotary shaft to be pressed into the press-in target portion of the drive transmitting body. The press-in portion includes a flat face and a plurality of circular arc faces having different distances from an axial center of the rotary shaft and being disposed at a same position as at least a portion of the flat face in the axial direction of the rotary shaft. A radius of curvature of one of the plurality of circular arc faces is greater than a radius of curvature of another of the plurality of circular arc faces.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: December 10, 2019
    Assignee: Ricoh Company, Ltd.
    Inventor: Kenji Tomita