Patents Examined by Hoang X Ngo
  • Patent number: 11467522
    Abstract: An image forming apparatus includes a developing cartridge, a drum cartridge, a casing, a connector, and a controller. The drum cartridge includes a photosensitive drum, a drum cartridge memory, a charger, and a cleaner. The charger is configured to charge the photosensitive drum and including a wire and a grid electrode. The cleaner is configured to clean the wire. The connector is configured to be electrically connected to the drum cartridge memory. Information is writable to the drum memory through the connector. The detection circuit board is configured to detect a state of discharge of the charger. The controller is configured to perform: determining whether or not the state of discharge detected by the detection circuit board is abnormal; and writing, in the drum cartridge memory, information representing occurrence of the abnormal discharge through the connector in a case where occurrence of the abnormal discharge is determined.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: October 11, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Fumitake Tajiri
  • Patent number: 11467514
    Abstract: An apparatus includes an image bearing member, a developer container having a replenishment port, a developer bearing member, a detection portion configured to output remainder amount information corresponding to the amount of developer accommodated in the developer container, a notification portion capable of notifying a first state, and a second state, and a control portion. The maximum amount of the developer that the developer container is capable of accommodating is larger than a value obtained by adding the amount of the developer accommodated in a replenishment container containing the developer for replenishment to the first amount, and wherein notification of the second state corresponds to notification of a case where the amount of the developer remaining in the developer container is larger than a case where the amount of the developer remaining in the developer container is the smallest.
    Type: Grant
    Filed: September 10, 2021
    Date of Patent: October 11, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Masaaki Sato, Koji Wada, Tsuyoshi Ogawa, Koji Fujinaka, Takao Sameshima, Tomio Noguchi, Akitoshi Toyota, Susumu Nittani
  • Patent number: 11460691
    Abstract: A motor includes a stationary unit and a rotation unit. The rotation unit includes a rotor hub, an annular body, and a clamp. The rotor hub is mounted with a first magnet opposite to the stator. The annular body is supported on an outer circumferential portion of the rotor hub. The clamp is directly or indirectly fixed to the rotor hub farther radially inside than the annular body, and presses the annular body to an axially lower side. The rotor hub includes a flange that expands radially outside from at least a portion excluding an upper end portion. On a surface of the clamp, a pattern to be detected to detect rotation of the rotation unit positioned in a circumferential direction with the central axis as the center is provided. The annular body is sandwiched between the flange and the clamp in an axial direction.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: October 4, 2022
    Assignee: NIDEC CORPORATION
    Inventor: Atsushi Yawata
  • Patent number: 11454920
    Abstract: An example image forming apparatus includes a main body, a driving motor rotatable in a first direction to provide a driving force to a developing cartridge and rotatable in a second direction opposite to the first direction, and a support assembly to, based on the developing cartridge being mounted to the main body, provide the driving force of the driving motor in the first direction to the mounted developing cartridge, and detach the mounted developing cartridge from the main body using the driving force of the driving motor in the second direction.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: September 27, 2022
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Pil Seung Oh, Taeil Jung, Byung Woo Kim, Taejin Yoon
  • Patent number: 11454902
    Abstract: An image forming apparatus includes a developing device, a first container, a second container, and a toner supplying device. The toner supplying device includes first and second conveyance members that convey the toner in the first and second containers, and first and second sensing shafts that are used to sense the remaining quantities of toner there. The first and second sensing shafts have a first or second light-shielding plate that moves into and out of the optical path of an optical sensor. Of the first and second light-shielding plates, one rotates together with the first or second conveying member selectively driven and makes contact with the other, and thereby makes it move out of the optical path of the optical sensor.
    Type: Grant
    Filed: December 2, 2021
    Date of Patent: September 27, 2022
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Tomohisa Soda
  • Patent number: 11448995
    Abstract: An example image forming apparatus includes an image forming unit to form a toner image on a print medium by using an electrophotographic method, a fixing unit to fix the toner image to the print medium by heat and pressure, a photo finishing unit to apply heat and pressure to the print medium after fixing and to cool the print medium, and a clear toner application unit located on an upstream side of the photo finishing unit with respect to a transporting direction of the print medium to apply 0.3 mg/cm2 or more of a clear toner to the print medium.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: September 20, 2022
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Sun Hyung Lee, Seung Jun Lee, Choong Kyu Park, Giljae You, Juhee Kwon
  • Patent number: 11448990
    Abstract: An image forming apparatus includes an image forming device to form an image on a sheet, and an image reading device to read an image from the sheet. A processing unit causes the image forming device to perform a predetermined image formation to form a first image for position correction of an output image and a second image for tone correction. A value of the position correction is obtained, based on a read image, and a tone correction value is obtained based on a read image from a second image sheet.
    Type: Grant
    Filed: July 15, 2021
    Date of Patent: September 20, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventor: Fumiaki Hirose
  • Patent number: 11442377
    Abstract: A developing cartridge includes: a casing; a developing roller rotatable about an axis extending in a first direction; a first agitator; an agitator gear; a first protrusion; a developing memory; a first electrical contact surface; and a first holder holding the first electrical contact surface. The agitator gear includes a large diameter gear and a small diameter gear positioned between the large diameter gear and the casing in the first direction. The first protrusion protrudes outward from one end of the casing in the first direction, and is positioned between the casing and the large diameter gear in the first direction. The first protrusion is positioned away from the small diameter gear. The first holder is positioned farther from the first protrusion than the large diameter gear is in the first direction. The first holder and the first electrical contact surface are movable relative to the casing.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: September 13, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Shinya Kusuda, Yasuo Fukamachi
  • Patent number: 11442403
    Abstract: An image forming apparatus includes a housing having an opening, a drum cartridge, and a development cartridge. The drum cartridge is movable in a first direction through the opening between a first position at which the drum cartridge is located inside the housing and a second position at which the drum cartridge is located outside the housing. The drum cartridge includes a photosensitive drum rotatable about an axis extending in the first direction and a first handle located at a downstream end of the drum cartridge in a movement direction in which the drum cartridge moves from the first position to the second position. The development cartridge is attachable to and detachable from the drum cartridge. The development cartridge includes a development roller and a second handle located upstream of the first handle in the movement direction in a state where the development cartridge is attached to the drum cartridge.
    Type: Grant
    Filed: June 9, 2021
    Date of Patent: September 13, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Shougo Sato, Kazuna Taguchi
  • Patent number: 11442376
    Abstract: A developer used in a developing apparatus equipped with a metal blade includes a toner base particle and external additives, the external additives including a silica particle with a particle diameter of 5 nm or more and 25 nm or less and an inorganic spacer particle with a particle diameter of 50 nm or more and 150 nm or less, and an area occupancy of the silica particle on a surface of the toner base particle is 40% or more.
    Type: Grant
    Filed: September 8, 2021
    Date of Patent: September 13, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kazunari Hagiwara, Taichi Sato, Takahiro Kawamoto, Yasukazu Ikami, Shoko Funaki
  • Patent number: 11435689
    Abstract: A cartridge is mountable in and dismountable from a main assembly of an image forming apparatus, in which the main assembly includes an opening and an openable member including a discriminating portion. The cartridge includes a process unit including a rotatable photosensitive member and a developing roller configured to supply toner to the photosensitive member, and a developer storage unit configured to store a developer. The developer storage unit is provided with a discharge opening for permitting discharge of the stored developer to the process unit and is mountable to and dismountable from the process unit. The developer storage unit is provided with a portion-to-be-discriminated provided so as to be engaged with the discriminating portion of the openable member when the cartridge is mounted in the main assembly and the openable member is in a closed position.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: September 6, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Takuya Kawakami, Naoya Asanuma, Tetsuya Numata, Noriyuki Komatsu
  • Patent number: 11429061
    Abstract: An image forming apparatus includes: a housing; a process cartridge including a photoconductive drum and a developing roller; a toner cartridge containing toner; and a drawer movable between an inner position and an outer position. The process cartridge includes a lock member movable between a lock position at which the lock member locks the process cartridge to the drawer, and a release position at which a lock between the process cartridge and the drawer is released. The lock member is located at the lock position in a state in which the process cartridge is mounted to the drawer, and the toner cartridge is mounted to the process cartridge. The lock member is located at the release position in a state in which the process cartridge is mounted to the drawer, and the toner cartridge is removed from the process cartridge.
    Type: Grant
    Filed: August 20, 2021
    Date of Patent: August 30, 2022
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Shougo Sato
  • Patent number: 11429042
    Abstract: An image forming apparatus includes a fixing device and a control unit. The fixing device includes a heating resistor formed of a positive temperature coefficient material. The control unit energizes the heating resistor with a first energization amount if a temperature of the heating resistor is lower than a predetermined temperature, and energizes the heating resistor with a second energization amount that is higher than the first energization amount if the temperature of the heating resistor is higher than the predetermined temperature.
    Type: Grant
    Filed: September 1, 2021
    Date of Patent: August 30, 2022
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Noboru Furuyama
  • Patent number: 11429038
    Abstract: A toner cartridge for an imaging apparatus includes a housing to accommodate toner, and an inlet port and an outlet port formed in the housing. The outlet port supplies the toner to a developing device of the imaging apparatus. The inlet port receives a residual toner removed from an image carrier of the developing device as a recycled toner.
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: August 30, 2022
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Kenji Tanaka, Takahiko Kimura
  • Patent number: 11429055
    Abstract: A metal frame of an image forming apparatus includes a connecting member which is a metal plate and which connects first and second spaced apart support members which are constructed to support an image forming unit of the an image forming apparatus. The connecting member includes a first facing portion which faces a first region of the first support member around a slit portion thereof, and a fitted portion which is supported by an inner peripheral surface of the slit portion and is fitted into the slit portion in a plate thickness direction of the fitted portion. A width of the fitted portion in a direction vertical to a plate thickness direction of the first support member and the plate thickness direction of the fitted portion in the slit portion is less than or equal to a width of the slit portion in the vertical direction.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: August 30, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuhito Watanabe, Takahiro Kobayashi
  • Patent number: 11422501
    Abstract: A drum cartridge includes: a drum frame to which a developing cartridge including a storage medium having an electrical contact surface is detachably attachable; a photosensitive drum; a transfer roller; and a conveying roller. The drum is rotatable about a first axis extending in a first direction and positioned at one end portion of the frame in a second direction. The transfer roller is rotatable about a second axis extending in the first direction and in contact with the drum. The conveying roller is rotatable about a third axis extending in the first direction and separated from the transfer roller in the second direction. A first opening of the frame is positioned between the transfer roller and the conveying roller in the second direction. The electrical contact surface is exposed to an outside through the first opening in a case where the developing cartridge is attached to the frame.
    Type: Grant
    Filed: August 6, 2021
    Date of Patent: August 23, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Takashi Shimizu, Koji Abe
  • Patent number: 11422502
    Abstract: A drum cartridge includes: a drum frame to which a developing cartridge including a storage medium having an electrical contact surface is detachably attachable; a photosensitive drum; a transfer roller; and a conveying roller. The drum is rotatable about a first axis extending in a first direction and positioned at one end portion of the frame in a second direction. The transfer roller is rotatable about a second axis extending in the first direction and in contact with the drum. The conveying roller is rotatable about a third axis extending in the first direction and separated from the transfer roller in the second direction. A first opening of the frame is positioned between the transfer roller and the conveying roller in the second direction. The electrical contact surface is exposed to an outside through the first opening in a case where the developing cartridge is attached to the frame.
    Type: Grant
    Filed: August 6, 2021
    Date of Patent: August 23, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Takashi Shimizu, Koji Abe
  • Patent number: 11422486
    Abstract: In an image forming apparatus, a drum cartridge includes a photosensitive drum, a developing device, a drum cleaner, a waste toner tube, and a flange. The waste toner tube includes a first end portion communicating with the drum cleaner and a second end portion connected to the flange. The developing device includes a protruding portion facing the flange. The cushion member is located between the flange and the protruding portion. The cushion member allows a cartridge mounting part of the developing device to move with respect to the flange in a case where the developing device moves with respect to the photosensitive drum.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: August 23, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Shougo Sato, Miho Ishida
  • Patent number: 11415934
    Abstract: Disclosed herein is a device, a printing device and a method of operating a printing device. The device comprises an air flow path extending from an intake to an outlet. The intake is to be mounted in a printing device and comprises a proximal intake segment and a distal intake segment along the air flow path. A proximal air flow path from the proximal intake segment to the outlet is shorter than a distal air flow path from the distal intake segment to the outlet. Each of the proximal and distal intake segments comprises a wall segment with at least one hole. An opening ratio of an area of the at least one hole and an area of the respective wall segment is larger in the distal intake segment than in the proximal intake segment.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: August 16, 2022
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Javier Deocon Mir, Francisco Guerrero Carvajal, Diego Lopez Ubieto
  • Patent number: 11415909
    Abstract: An image forming apparatus includes: a photoreceptor that forms a toner image; a light emission element that exposes the photoreceptor; at least one light emission controller that controls light emission of the light emission element; and a hardware processor that transmits a signal including a control parameter for controlling the light emission element with respect to the light emission controller, wherein the light emission controller stops light emission control over the light emission element according to communication that receives the signal including the control parameter from the hardware processor.
    Type: Grant
    Filed: July 12, 2021
    Date of Patent: August 16, 2022
    Assignee: KONICA MINOLTA, INC.
    Inventors: Tatsuya Eguchi, Hiroshi Eguchi, Takashi Watanabe, Takeshi Ishida