Patents Examined by Sevan A Aydin
  • Patent number: 11994825
    Abstract: An image forming apparatus includes a drum cartridge and developing cartridge. The drum cartridge may include a photosensitive drum rotatable about a first axis extending in an axial direction. The developing cartridge may include a developing roller rotatable about a second axis extending in the axial direction. The image forming apparatus may include a main casing including a slot extending in the axial direction. The image forming apparatus may include a first inner surface positioned inside of the slot, and a second inner surface positioned inside of the slot farther from the cover in the axial direction than the first inner surface from the cover in the axial direction. The first and second inner surfaces may be configured to press the developing roller toward the photosensitive drum.
    Type: Grant
    Filed: June 9, 2023
    Date of Patent: May 28, 2024
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Masao Ichiyanagi, Keita Shimizu
  • Patent number: 11988978
    Abstract: A developing cartridge may include: a casing configured to accommodate developer therein, the casing extending in the first direction; a coupling rotatable about a first axis extending in the first direction, the coupling being positioned at one side of the casing in the first direction; a detection gear rotatable about a second axis extending in the first direction, the detection gear being positioned at another side of the casing in the first direction; and a storage medium including an electric contact surface, the electric contact surface being positioned at the one side of the casing in the first direction.
    Type: Grant
    Filed: April 17, 2023
    Date of Patent: May 21, 2024
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Nao Itabashi, Junichi Yokoi
  • Patent number: 11971668
    Abstract: An electrophotographic roller comprising a substrate and a foam layer on an outer peripheral surface of the substrate, the foam layer constituting an outer surface of the electrophotographic roller, the foam layer comprising cells each of which opens on the outer surface, and the foam layer having a zero-point charge measured using a standard carrier of 40 ?C/g or more.
    Type: Grant
    Filed: April 6, 2023
    Date of Patent: April 30, 2024
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Ryosuke Takayama, Hiroaki Komatsu, Koji Yatsu, Seiji Tsuru
  • Patent number: 11971674
    Abstract: A heating device includes a rotator, a heater, a heater holder, and a first high thermal conduction member. The heater includes a base and a plurality of heat generators being arranged on the base and including neighboring heat generators. The heater has a gap area between the neighboring heat generators. The first high thermal conduction member has a higher thermal conductivity than the base and faces the gap area.
    Type: Grant
    Filed: January 13, 2022
    Date of Patent: April 30, 2024
    Assignee: RICOH COMPANY, LTD.
    Inventors: Shigeo Nanno, Yasunori Ishigaya, Takahiro Imada, Takumi Waida, Daisuke Hirano
  • Patent number: 11966182
    Abstract: A fixing device includes a fixing member, a pressure member, and a pair of retention members each including a restriction surface. The restriction surface restricts a movement of the fixing member in an axial direction. The restriction surface includes a first contact area and a second contact area. The first area is an area more on a downstream side of a passing direction of a medium than a center of a pressure area in the passing direction, and also closer to the pressure area than an apex of the fixing member on an opposite side of the pressure area. The first contact area and the second contact area are each tilted at a certain gradient so as to be set apart from the end portion of the fixing member in the axial direction from a side of the apex toward a side of the pressure area.
    Type: Grant
    Filed: January 25, 2023
    Date of Patent: April 23, 2024
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Hironori Takahashi, Masakazu Uehara, Tomohiro Watatani, Shota Onishi, Yuhiro Sakai
  • Patent number: 11953855
    Abstract: An image forming apparatus includes: a housing; a drum cartridge as a first cartridge including a photosensitive drum; a second cartridge accommodating toner; and a drawer movable between an inside position where the drawer in its entirety is positioned inside the housing and an outside position where at least a part of the drawer is positioned outside the housing. The drum cartridge is attachable to and detachable from the drawer. The drawer includes: a side plate configured to receive the photosensitive drum; and a locking member supported by the side plate. The locking member is movable relative to the side plate between a locking position where the locking member locks the photosensitive drum to the side plate and an unlocking position where the locking member unlocks the photosensitive drum from the side plate in an attached state of the drum cartridge to the drawer.
    Type: Grant
    Filed: February 28, 2022
    Date of Patent: April 9, 2024
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Shougo Sato, Yasuo Fukamachi
  • Patent number: 11947291
    Abstract: An image forming apparatus includes a wireless tag communication device configured to communicate with a wireless tag attached to a sheet, a fixing device configured to fix a toner image on the sheet, and a processor configured to: upon receipt of a print job, control the communication device to read from the wireless tag a first fixing temperature that has previously been used to fix a toner image on the sheet, determine a second fixing temperature to be used by the fixing device based on the first fixing temperature, and execute the print job by controlling the fixing device to fix a toner image on the sheet at the second fixing temperature.
    Type: Grant
    Filed: August 29, 2022
    Date of Patent: April 2, 2024
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventor: Hideaki Fukaya
  • Patent number: 11947294
    Abstract: A fixing device includes: a first roller on which an elastic layer is formed; and a second roller that forms a clamping portion at which a recording medium is clamped between the first roller and the second roller, a groove extending in an axial direction being formed in an outer peripheral surface of the second roller, and the second roller not including an elastic layer.
    Type: Grant
    Filed: December 14, 2021
    Date of Patent: April 2, 2024
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Mitsuhiro Matsumoto, Norio Ogawahara, Yoshiki Shimodaira, Masato Yamashita
  • Patent number: 11947295
    Abstract: A heating device includes a heater, a rotator, and a pressure rotator. The heater includes resistive heat generators forming a heat generation area and has a separation area formed by the resistive heat generators. The pressure rotator includes a first region and a second region. The first region faces the heater in a range of 20 mm from a center position of the heat generation area toward an end thereof in the arrangement direction. The second region faces the heater in at least a part of a range of 30 mm from a center position of the separation area toward the center position of the heat generation area. An outer diameter of the pressure rotator increases from the center toward the end. The outer diameter of the second region increases at an increasing rate larger than an increasing rate of the outer diameter of the first region.
    Type: Grant
    Filed: June 14, 2022
    Date of Patent: April 2, 2024
    Assignee: Ricoh Company, Ltd.
    Inventor: Hitoshi Fujiwara
  • Patent number: 11947311
    Abstract: An image forming apparatus, having a main body housing including an air outlet opening, a photosensitive drum, a fuser to thermally fix toner transferred from the photosensitive drum to a sheet on the sheet, a fan to generate an airflow toward the air outlet opening, and a controller, is provided. The controller is configured to, in a continuous stage of printing continuous from a beginning stage, count a cumulative printed page number being a cumulative number of pages printed by the image forming apparatus, in a case where the cumulative printed page number is smaller than a first page number, control the fan to rotate at a first speed, and in a case where the cumulative printed page number is equal to or larger than the first page number, control the fan to rotate at a second speed, the second speed being higher than the first speed.
    Type: Grant
    Filed: July 20, 2022
    Date of Patent: April 2, 2024
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Michihiro Shimadu, Yusuke Okabe
  • Patent number: 11934145
    Abstract: A developing apparatus includes an electrostatic latent image bearer, a developing sleeve, a case, and an air filter. The case accommodates a two-component developer and the developing sleeve. The air filter is attached to the case. The air filter has a thickness of 2 to 20 mm and has a density gradient with a pressure loss of 2 to 40 Pa at a wind speed of 10 cm/s. The air filter forms an airflow sucked into the case from a gap between the developing sleeve and the case and forms an airflow discharged from the case through the air filter. The two-component developer accommodated in the case contains a magnetic particle a surface of which is coated with a resin layer. The resin layer contains at least one type of chargeable particle.
    Type: Grant
    Filed: November 7, 2022
    Date of Patent: March 19, 2024
    Assignee: Ricoh Company, Ltd.
    Inventors: Minoru Masuda, Tohru Suganuma, Masashi Nagayama, Hiroyuki Kishida, Kento Takeuchi, Kaede Masuko, Tomomi Suzuki, Takuya Suganuma, Kazuki Yogosawa
  • Patent number: 11921446
    Abstract: A fixing device includes an annular belt, a heating member disposed to face an inner circumferential surface of the annular belt; and a heat storage member disposed to face a surface of the heating member on a side opposite to the annular belt. A thermal diffusivity of the heat storage member is lower than a thermal diffusivity of the annular belt.
    Type: Grant
    Filed: November 17, 2021
    Date of Patent: March 5, 2024
    Assignee: Oki Electric Industry Co., Ltd.
    Inventor: Akira Ubagai
  • Patent number: 11921457
    Abstract: A photosensitive drum is rotatable about a drum axis extending in a first direction. A frame includes a first side plate located at first end in the first direction and a second side plate spaced from the first side plate in the first direction. The frame rotatably supports the photosensitive drum between the first side plate and the second side plate in the first direction. The frame holds a developer cartridge. A lock lever is pivotable about a pivot axis extending in a second direction intersecting with the first direction. The lock lever is movable between a lock position at which the developer cartridge is locked on the frame and a release position at which the developer cartridge is unlocked from the frame.
    Type: Grant
    Filed: April 11, 2022
    Date of Patent: March 5, 2024
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yuwen Wang, Junichi Hashimoto, Isao Kishi, Kazuaki Ooka
  • Patent number: 11912014
    Abstract: Offset print apparatus comprises: a blanket to receive print agent; a non-contact temperature sensor to monitor electromagnetic radiation from a measurement location of the blanket and generate a respective output; and a controller to: receive the output from the non-contact temperature sensor; determine coverage information relating to a print agent coverage of the blanket at the measurement location; and calculate a temperature of the blanket at the measurement location taking into account both the output from the non-contact temperature sensor and the determined coverage information.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: February 27, 2024
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Evgeny Gorbikov, Michal Shaviv Petrushevsky, Martin Chauvin, Ron Naveh
  • Patent number: 11906919
    Abstract: A recording medium determination device includes a light emitter, a light detector, and a hardware processor. The light emitter emits inspection light to a recording medium. The light detector detects incident light including at least one of diffuse reflected light of the inspection light emitted to the recording medium and fluorescent light excited by the inspection light in the recording medium. The hardware processor makes a determination depending on a property of the recording medium based on a detection result of first incident light of the incident light in accordance with first inspection light of the inspection light and second incident light of the incident light in accordance with second inspection light of the inspection light obtained by the light detector. The second inspection light has an intensity whose peak wavelength is shorter than the peak wavelength of the first inspection light.
    Type: Grant
    Filed: May 5, 2022
    Date of Patent: February 20, 2024
    Assignee: KONICA MINOLTA, INC.
    Inventors: Shohei Dokiya, Daisuke Kobayashi, Masahiko Takahashi, Makoto Ooki, Takafumi Yuasa, Takaki Uemura
  • Patent number: 11892794
    Abstract: An image forming apparatus includes a fixing device including a fixing device frame, a chute rotatable between a path forming position and a path opening position, an optical sensor including a light-emitting element, and an actuator. The actuator has a shaft, a first lever configured to contact an anti-pivot rib, and a second lever configured to shield light emitted from the light-emitting element. The actuator is movable to a position where the first lever contacts the anti-pivot rib when the chute is at the path forming position, a position where the first lever and the anti-pivot rib are separated from each other when the chute is at the path forming position, and a position where the first lever and the anti-pivot rib are separated from each other when the chute is at the path opening position. The actuator and the optical sensor are supported by the fixing device frame.
    Type: Grant
    Filed: December 16, 2022
    Date of Patent: February 6, 2024
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Ayaka Ohira, Tomonori Watanabe
  • Patent number: 11880159
    Abstract: An image forming apparatus includes a main body casing, a drum cartridge, a developing cartridge and an intermediate transfer belt. The drum cartridge is removably insertable into to the main body casing in a first direction. The developing cartridge is removably insertable into the main body casing in the first direction. The drum cartridge includes a first handle. The first handle has a first recess having a first hollow. The developing cartridge includes a second handle. The second handle has a second recess having a second hollow.
    Type: Grant
    Filed: April 29, 2022
    Date of Patent: January 23, 2024
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Nao Itabashi
  • Patent number: 11880151
    Abstract: An image forming apparatus has an image forming unit to form a toner image on a first sheet and a fixing unit configured to heat the first sheet to fix the image to the first sheet. A control unit begins a cooling process for cooling the fixing unit when an overheating condition is met, then permits the image forming unit to form a toner image on a second sheet after the cooling process ends according to a first cooling condition if a person is detected near the image forming apparatus or after the cooling process ends according to a second cooling condition if a person not detected near the image forming apparatus. The cooling process under the first cooling condition ends in less time than under the second cooling condition.
    Type: Grant
    Filed: September 13, 2022
    Date of Patent: January 23, 2024
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Masaya Tanaka, Hiroshi Ota
  • Patent number: 11874623
    Abstract: An image forming apparatus includes a photoconductor drum and a drive device. A latent image is to be formed on the photoconductor drum. The drive device drives the photoconductor drum. The drive device includes a motor, a drive pulley, a driven pulley, and a metal belt. The drive pulley is provided for the motor. The driven pulley is provided for the photoconductor drum. The metal belt is wrapped around the drive pulley and the driven pulley.
    Type: Grant
    Filed: March 18, 2022
    Date of Patent: January 16, 2024
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Akihiro Yamaguchi
  • Patent number: 11860568
    Abstract: A developing cartridge may include: a casing to accommodate developer; a storage medium including an electric contact surface; an elastic member extending in a first direction crossing the electric contact surface, and configured to be compressed or stretched in the first direction between a first state and a second state; and a holder including an outer surface positioned toward a side of the holder in the first direction, the electric contact surface positioned at the outer surface, and movable between first and second positions in the first direction relative to the casing. A length of the elastic member in the first direction is greater in the first state than in the second state. The electric contact surface is in the first position when the elastic member is in the first state, and the electric contact surface is in the second position when the elastic member is in the second state.
    Type: Grant
    Filed: March 8, 2022
    Date of Patent: January 2, 2024
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Nao Itabashi, Junichi Yokoi