Patents Examined by Sophia S. Chen
  • Patent number: 10890861
    Abstract: A powder storage height detection device includes: a main body that has a transport path along which powder is transported; a powder transport unit that is disposed to rotate in the transport path and includes a transporter provided spirally around a rotational shaft; a swinging unit that comes into contact with a surface of the powder transported in the transport path, and swings by following at least a storage height of the surface; and a detection unit that detects a state of swinging of the swinging unit. The transport unit includes a non-transport portion in which the transporter is not present, and the swinging unit is located and disposed to swing in the non-transport portion, and an upper portion located above a contact portion to be in contact with the powder is configurated by an upward convex curved surface.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: January 12, 2021
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Yoshihisa Nakao, Makoto Kanno, Taiyou Uehara, Daisuke Uchimitsu, Ryo Fukuno, Tomoyuki Hamachi
  • Patent number: 10884357
    Abstract: A toner cartridge according to one example embodiment includes a housing having a toner reservoir. An outlet port faces downward on a front of the housing near a first side of the housing. A linkage is positioned on the first side of the housing and has an engagement surface that is accessible at the rear of the housing. A projection is positioned on the first side of the housing and is movable between a first position and a second position. The projection is operatively connected to the linkage such that the projection moves upward from the first position to the second position when the engagement surface receives a forward force that is toward the front of the housing. The projection extends outward sideways from the first side when the projection is in the second position.
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: January 5, 2021
    Assignee: Lexmark International, Inc.
    Inventors: Michael Nuestro Bayubay, Salvador Capurihan Bonanciar, Brian Scott Carpenter, Donato Austria Marmol, Robert Watson McAlpine, Katrina Rosit Lactuan
  • Patent number: 10884361
    Abstract: In a case where fixing processing ends in a state where a power supply line is switched by a switching unit according to a first print command so that power is suppliable to a second heating element, the switching unit switches the power supply line from the second heating element to a first heating element so that power is suppliable to the first heating element, the switching occurring regardless of presence or absence of reception of a second print command subsequent to the first print command.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: January 5, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kohei Wakatsu, Kazuhiro Doda, Tsuguhiro Yoshida, Yutaka Sato, Ken Oi
  • Patent number: 10877408
    Abstract: An image heating apparatus including a sleeve having divided heat generating layers, an exciting coil provided in an inside space of the sleeve, a magnetic core provided inside the exciting coil, a temperature detecting element opposing one of the divided heat generating layers, and a current monitoring sensor. An induced current is generated in the divided heat generating layers by passing an alternating current through the exciting coil, and the divided heat generating layers generate heat. An image on the recording material is heated by the divided heat generating layers. The current monitoring sensor is configured to monitor a current flowing through the above-described one of the divided heating generating layers.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: December 29, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuki Nishizawa, Minoru Hayasaki, Aoji Isono, Akira Kuroda, Takaaki Tsuruya
  • Patent number: 10871734
    Abstract: An image forming apparatus includes an apparatus body, an image bearer, and a rotator opposed to the image bearer. The rotator is removably installable in the apparatus body. The image forming apparatus further includes a guide configured to guide the rotator in a longitudinal axial direction of the rotator toward a regular position where the rotator is installed in the apparatus body.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: December 22, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventor: Naoki Takai
  • Patent number: 10871736
    Abstract: A fixing device includes an endless belt that rotates and a pressure rotator that rotates and presses against the endless belt to form a fixing nip between the endless belt and the pressure rotator, through which a recording medium bearing an image is conveyed. A heater is disposed inside a loop formed by the endless belt. The heater heats the endless belt. A conductor is disposed upstream from the pressure rotator in a recording medium conveyance direction and grounded. The conductor contacts and detects the recording medium.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: December 22, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Daisuke Inoue, Tomoya Adachi, Yuusuke Furuichi
  • Patent number: 10866546
    Abstract: An image heating apparatus includes an electroconductive cylindrical member, an opposing member thereto, a nip forming member cooperating with the opposing member to form a nip configured to nip and feed a recording material, a magnetic field generating device, a converter, a temperature detector for the rotatable member, and a converter controller. The magnetic field generating device includes an excitation coil in an inside space of the rotatable member so that a helicity axis of the excitation coil is in parallel with an axial direction of the rotatable member to produce an induced current in a circumferential direction of the rotatable member. The converter applies a high frequency voltage to the coil. The controller controls the temperature of the rotatable member by controlling at least one of a pulse period, a pulse-on time, a burst period, and a burst-on time.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: December 15, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Aoji Isono, Minoru Hayasaki
  • Patent number: 10859940
    Abstract: An image forming apparatus, having first, second, and third photosensitive drums, a first developing cartridge including a first developing roller, a second developing cartridge including a second developing roller, a third developing cartridge including a third developing roller, an exposure device, a conveyer, and a moving mechanism, is provided. The first developing roller, the second developing roller, and the third developing roller are arranged in the recited order from upstream to downstream in a moving direction for the sheet to be conveyed. When the second developing roller is at the separated position thereof, the second developing cartridge coincides with a light path of the laser beam for scanning the first photosensitive drum. When the third developing roller is at the separated position thereof, the third developing cartridge coincides with a light path of the laser beam for scanning the second photosensitive drum.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: December 8, 2020
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Masahito Saeki, Toshiyuki Sano, Shintaro Sakaguchi, Kotaro Haruta, Shoichiro Nishimura
  • Patent number: 10852658
    Abstract: An optical scanning device has an optical housing. A coupled Helmholtz resonator having a first resonance space and a second resonance space therein is disposed in the optical housing. A translucent partition wall, a first partition wall, and a second partition wall which extend from a bottom wall to a top wall of the optical housing are arranged in this order from an upstream side toward a downstream side on an optical path between a light source and a rotary polygonal mirror. The first and second resonance spaces are separated from each other by the three partition walls. One of the first and second resonance spaces resonates at a frequency of a rotational speed of a motor, and the other of the first and second resonance spaces resonates at a generated frequency of a wind noise generated by the rotary polygonal mirror.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: December 1, 2020
    Assignee: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventor: Jun Nakai
  • Patent number: 10852656
    Abstract: An optical deflector is configured such that a distance between a circumscribed circle of a rotary polyhedron centered on an axis of the rotary polyhedron and an inner peripheral surface of a peripheral wall of a cover member in a radial direction of the rotary polyhedron is largest at both of circumferential ends of an opening of the cover member.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: December 1, 2020
    Assignee: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventor: Shingo Yoshida
  • Patent number: 10845737
    Abstract: An image forming apparatus includes a conveyance device configured to transport a conveyed object, a conveyance guide configured to guide the conveyed object to the conveyance device, a housing including a shaft support. The conveyance guide includes a rotation shaft that includes a non-circular shaft portion. The shaft support has a circular hole part and a guide slot. The circular hole part is configured to rotatably support the rotation shaft, and the rotation shaft is inserted into the shaft support through the guide slot while a flat surface of the non-circular shaft portion slides along a guide surface of the guide slot. The image forming apparatus further includes a restrictor configured to restrict movement of the rotation shaft inserted into the circular hole part of the shaft support in a direction opposite to a direction of insertion of the rotation shaft into the shaft support.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: November 24, 2020
    Assignee: Ricoh Company, Ltd.
    Inventor: Naoki Takai
  • Patent number: 10845740
    Abstract: A temperature detector for being positioned with respect to a counterpart includes a temperature detecting element that detects a temperature of a detecting target and a holding body that holds the temperature detecting element. A projecting engagement engages the counterpart and is mounted on the holding body.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: November 24, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuusuke Furuichi, Hiroshi Seo, Yoshiki Yamaguchi
  • Patent number: 10845756
    Abstract: A device for transmitting a rotational force to an electrophotographic photosensitive drum includes a pin supported by a flange, with the pin being configured to transmit the rotational force to the flange. The device also includes a coupling member having a rotational axis, the coupling member including (i) a first end portion operatively connected to the flange, (ii) a second end portion including at least one projection, and (iii) a connecting portion connecting the first end portion and the second end portion, with the first end portion including a through-hole portion. The pin penetrates the through-hole portion and is capable of receiving the rotational force from the coupling member, and the coupling member is movable with respect to the pin between a first position in which the rotational axis of the coupling member is coaxial with an axis of the flange, and a second position in which the rotational axis of the coupling member is inclined with respect to the axis of the flange.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: November 24, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takahito Ueno, Shigeo Miyabe, Masanari Morioka, Masato Hisano
  • Patent number: 10838349
    Abstract: An image forming apparatus includes a power source, a developing cartridge including a developing rotating member to carry a developer to develop an electrostatic latent image formed on an image bearing member, and a motor configured to rotationally drive the developing rotating member. A supporting frame, dismountably mounted to the image forming apparatus, dismountably supports the developing cartridge and dismountably supports the motor. In addition, an electrical contact, provided on the supporting frame, electrically contacts to the power source to supply electric power to the motor in a state that the supporting frame is mounted to the image forming apparatus, and a drawer portion dismountably supports the supporting frame and is capable of being pulled out from the image forming apparatus to dismount the supporting frame from the image forming apparatus in a state that the supporting frame is supported.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: November 17, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Teppei Nagata
  • Patent number: 10837428
    Abstract: A coil spring unit includes a coil spring; and a metal plate supporting the coil spring, the metal plate including a plurality of supporting portions cooperative with each other to support the coil spring, wherein the supporting portions are provided by bending the metal plate at bending lines and have supporting surfaces substantially perpendicular to the bending lines, respectively, and wherein the supporting surfaces are substantially parallel with outside tangential lines of the coil spring and support the coil spring.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: November 17, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shota Kase
  • Patent number: 10838347
    Abstract: A torsion coil spring supporting structure includes a first supporting portion opposing one end of a torsion coil spring with respect to an axial direction of the torsion coil spring; and a second supporting portion opposing the other end of the torsion coil spring with respect to the axial direction. The first supporting portion includes a spring supporting portion cooperative with the second supporting portion to support the torsion coil spring at a mounting position. The first supporting portion is elastically deformable, by moving the torsion coil spring, to permit the torsion coil to move to the mounting position in a direction crossing the axial direction and elastically restorable to place the spring supporting portion in an inner diameter portion of the torsion coil spring, thus supporting the torsion coil spring at the mounting position.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: November 17, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masaki Seto
  • Patent number: 10838334
    Abstract: A fixing device includes a fixing belt and a heating section. The heating section is disposed opposite to an inner circumferential surface of the fixing belt. The heating section includes a heater, a heater holding member, and a pinching member. The heater heats the fixing belt. The heater holding member holds the heater. The pinching member pinches the heater and the heater holding member to restrict movement of the heater relative to the heater holding member.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: November 17, 2020
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Yuhiro Sakai, Masakazu Uehara, Hironori Takahashi, Tomohiro Watatani
  • Patent number: 10831150
    Abstract: A cartridge includes a photosensitive member, a discharge opening for discharging a developer removed from the photosensitive member, toward a loosening member provided in the main assembly of a apparatus; a vibration imparting member for imparting vibration to the loosening member. The vibration imparting member is movable between a first position for imparting the vibration to the loosening member and a second position retracted from the first position.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: November 10, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akinobu Hirayama, Takahito Ueno, Toshiaki Takeuchi
  • Patent number: 10831131
    Abstract: A developer unit for an electrophotographic image forming device includes a developer roll rotatably mounted on a housing. The developer roll includes a shaft defining a rotational axis and a roll body cylindrically disposed around the shaft to form an outer circumferential surface of the developer roll. An end seal includes a curved rotary seal portion sandwiched between a pocket portion of the housing and the outer circumferential surface of the developer roll, such that an outer circumferential surface of the curved rotary seal portion contacts the pocket portion of the housing and an inner circumferential surface of the curved rotary seal portion contacts the outer circumferential surface of the developer roll. The pocket portion of the housing includes protrusions that contact the outer circumferential surface of the curved rotary seal portion to restrict movement of the end seal along an operative rotational direction of the developer roll.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: November 10, 2020
    Assignee: Lexmark International, Inc.
    Inventors: Gregory Alan Cavill, Richard Louis Goin
  • Patent number: 10831138
    Abstract: According to one embodiment, a fixing device includes a heating rotator to contact a medium, such as a sheet of paper, on which a toner image has been disposed. A heater is inside the heating rotator to heat the medium. A pressurizing rotator is configured to press against the heating rotator to form a nip through which the medium passes. A controller is configured to drive the heater to heat the heating rotator to a target temperature. The controller is configured to set the target temperature according to a length of a standby time between an end of a first image forming process to a start of a second image forming process after the first image forming process.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: November 10, 2020
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Katsutoshi Mita