Patents Examined by Quana Grainger
  • Patent number: 11762329
    Abstract: The image forming apparatus includes a cartridge replaceable by detachably mounting to the image forming apparatus, a door that takes a closed state or an open state, a locking pin that switches a state of the regulation unit between a regulating state in which the replacement unit is prevented to be detached from the image forming apparatus and a release state in which the replacement unit is to be detachable from the image forming apparatus, and a lock control unit (a control unit) that makes a determination as to whether or not the state of the regulation unit is to be switched from the release state to the regulating state, at a predetermined timing when initial processing is completed after a power source is turned on or a state of the door becomes the closed state from the open state.
    Type: Grant
    Filed: September 20, 2022
    Date of Patent: September 19, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Yoshiteru Kaida
  • Patent number: 11754957
    Abstract: An image forming apparatus includes an image bearing member, an image forming portion, a transfer member, a power source, an acquiring portion, and a controller capable of executing an operation in an adjustment mode. A plurality of test toner images transferred onto a recording material in the occurrence in the adjusting mode include a first test toner image transferred under application of a first test voltage and a second test toner image transferred under application of a second test voltage different from the first test voltage. In the operation in the adjustment mode, the controller adjusts the transfer voltage set for transfer on the basis of first information on variation in image density acquired in different regions of the first test toner image and second information on variation in image density acquired in different regions of the second test toner image.
    Type: Grant
    Filed: March 4, 2022
    Date of Patent: September 12, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yusuke Minato, Takenori Sueoka
  • Patent number: 11754969
    Abstract: A toner cartridge according to one example includes first and second alignment guides that extend outward from a first side and a second side of the toner cartridge, respectively, for positioning the toner cartridge. The first and second alignment guides define a pivot axis about which the toner cartridge is pivotable relative to an imaging unit when the toner cartridge is installed on the imaging unit. An engagement member is positioned on a rear of the toner cartridge for receiving a bias force for biasing the toner cartridge about the pivot axis when the toner cartridge is installed on the imaging unit. The engagement member is positioned next to the bottom of the housing. The engagement member includes an angled contact surface that faces upward and rearward for contacting a corresponding hold-down on the imaging unit when the toner cartridge is installed on the imaging unit.
    Type: Grant
    Filed: April 21, 2022
    Date of Patent: September 12, 2023
    Assignee: Lexmark International, Inc.
    Inventors: Brian Scott Carpenter, Gregory Alan Cavill, James Richard Leemhuis, Jeffrey Lawrence Tonges
  • Patent number: 11754953
    Abstract: A device of a lower hierarchy in a power supply configuration sets a flag of a non-volatile storage area when the device of the lower hierarchy reset by WDT. In a case where the flag at the time of starting, the device of an upper hierarchy is notified that the device of the lower hierarchy in the power supply configuration is reset. Thus, the device of the upper hierarchy initializes the entire system, and the image forming apparatus can be operated.
    Type: Grant
    Filed: January 4, 2022
    Date of Patent: September 12, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Atsushi Hikichi
  • Patent number: 11747759
    Abstract: An image forming apparatus includes a stacking unit, a pickup roller, a motor having a winding, a rotor, and a phase, an image forming unit, an operation unit, and a receiving unit. The motor drives the pickup roller to feed a recording medium stacked on the stacking unit. The image forming unit forms an image on the fed medium. A user operates the operation unit to set an image forming condition. When, in a state where the winding is not excited, the operation unit is operated before the receiving unit receives an instruction to start forming the image, an initial operation is executed in a rotor stop state that supplies current to the winding and determines the motor phase based on the current flowing through the winding. When the instruction is received after the initial operation, the winding receives current such that the rotor rotates based on the determined phase.
    Type: Grant
    Filed: March 1, 2022
    Date of Patent: September 5, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shigemi Kumagai
  • Patent number: 11747753
    Abstract: An image forming apparatus includes a photosensitive member, a transfer member, a transfer power source, and a control unit. At a start time of a start-up operation at the time of starting an image forming operation, on the surface of the photosensitive member, a first position coincides with a charging position, and a third position coincides with a transfer position. During a period in which an area on the photosensitive member located between the first position and the third position in a rotation direction of the photosensitive member passes the transfer position, the control unit performs control of applying a first voltage having the same polarity as a normal charging polarity of toner to the transfer member by the transfer power source, and, at a predetermined timing, changing a voltage from the first voltage to a second voltage having an absolute value less than that of the first voltage.
    Type: Grant
    Filed: January 3, 2022
    Date of Patent: September 5, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinsuke Kobayashi, Kazuhiro Funatani, Kensuke Umeda, Takanori Watanabe, Ai Suzuki
  • Patent number: 11740577
    Abstract: An image forming apparatus includes an image forming unit to form an image on a sheet. A fixing device heats the sheet and includes a tubular body that presses against the sheet and rotates, and a heat generator contacts an inside surface of the tubular body. The length dimension of the heat generator is aligned with the axial direction of the tubular body. The heat generator has a first row of first heating elements with a first gap between each adjacent pair of first heating elements and a second row of second heating elements. The first and second rows are offset from one another in a width direction corresponding to the sheet conveyance direction. A second gap is between each adjacent pair of second heating elements in the longitudinal direction. The positions of the first gaps are different from positions of the second gaps.
    Type: Grant
    Filed: September 14, 2022
    Date of Patent: August 29, 2023
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventor: Kousei Miyashita
  • Patent number: 11740568
    Abstract: In an example of the disclosure, an imaging oil is applied upon a photoconductor surface. An element is brought into contact with the imaging oil at the photoconductor surface. The element has a first refractive index that is within a predefined tolerance of a second refractive index of the imaging oil. The photoconductor surface is exposed to light emitted by a writing component. The light passes through the element and the imaging oil.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: August 29, 2023
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Lavi Cohen, Sasha Zilbershtein, Michael Vinokur, Michael Plotkin
  • Patent number: 11733630
    Abstract: An image forming system comprises a first housing, a second housing and a third housing. The second housing may comprise a motor, a first door and a first switch. The first switch is provided on an electrical path connecting a power supply and the motor, for switching between a first state and a second state and for switching from the first state to the second state. The third housing may comprise a load. When the first door is opened in a state where the first switch is in the first state, the first switch switches from the first state to the second state to cause supply of electric power to the load to be cut off.
    Type: Grant
    Filed: December 13, 2021
    Date of Patent: August 22, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroshi Funaba
  • Patent number: 11703781
    Abstract: A fixing device includes a fixing belt, a nip formation pad, a support, an opposing rotator, a heat source, a housing, an inlet guide, an airflow generator, and an airflow guide. The fixing belt fixes an unfixed image on a recording medium. The nip formation pad is disposed inside a loop of the fixing belt. The support supports the nip formation pad. The opposing rotator abuts on the nip formation pad via the fixing belt. The heat source heats the fixing belt. The housing has an inlet opening to receive the recording medium. The inlet guide is disposed at the inlet opening and guides the recording medium to the fixing nip. The airflow generator generates an airflow in the housing. The airflow guide guides the airflow toward the inlet opening to generate a flow of air in the inlet opening in a direction different from a conveyance direction.
    Type: Grant
    Filed: August 20, 2021
    Date of Patent: July 18, 2023
    Assignee: RICOH COMPANY, LTD.
    Inventor: Naoki Iwaya
  • Patent number: 11693350
    Abstract: An image forming apparatus includes an amorphous silicon photosensitive member, a developing device including a developer carrying member that carries a two-component developer, and a control portion. When a potential difference V0?Vdc between the photosensitive member and the developer carrying member has a first potential difference at which the toner is moved from the developer carrying member to the photosensitive member and a second potential difference at which the toner is moved from the photosensitive member to the developer carrying member, the control portion adjusts V0 or Vdc so that the first potential difference and the second potential difference are equal in value and opposite in polarity, and a first development current |Ia| that flows at the first potential difference and a second development current |Ib| that flows at the second potential difference satisfy 1.9×10?2?|Ib|/N?5.7×103 [?A/mm].
    Type: Grant
    Filed: July 6, 2022
    Date of Patent: July 4, 2023
    Assignee: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventors: Tamotsu Shimizu, Kazunori Tanaka, Yasuhiro Tauchi
  • Patent number: 11693344
    Abstract: A heating efficiency 600 includes a substrate 610 and a plurality of heat generating elements 523a to 623f which are provided on both surfaces of the substrate 610 and which generate heat, and heats a fixing belt in contact with an inner peripheral surface of the fixing belt. The plurality of heat generating elements 623a to 623f are different from each other in length with respect to a widthwise direction, and at least three of the heat generating elements are provided on a front surface of the substrate 610 which is a side where the heater 600 contacts the inner peripheral surface of the fixing belt 600, and at least one of the heat generating elements is provided on a back surface. A longest heat generating element 623b, in length with respect to the widthwise direction, of the plurality of heat generating elements 623a-623f is provided on the front surface.
    Type: Grant
    Filed: December 7, 2021
    Date of Patent: July 4, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takeshi Kinoshita, Junji Ishikawa
  • Patent number: 11681239
    Abstract: An optical member that refracts a light beam to diverge or focus the light beam, includes: at least three pairs of opposing surfaces. Each of the three pairs of opposing surfaces include a lens. Curvatures of the lenses at one side surfaces of the respective three pairs of surfaces are all the same, or curvatures of the lenses at one side surfaces of respective pairs of at least two pairs of the three pairs of surfaces are different from each other, and respective shortest distances between optical axes of the lenses at the one side surfaces of respective pairs of the at least two pairs of surfaces, and reference sides which are each any one of respective sides surrounding surfaces including the lenses are different from each other.
    Type: Grant
    Filed: April 9, 2021
    Date of Patent: June 20, 2023
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Kenzo Ohkubo, Manabu Matsuo, Takaharu Motoyama
  • Patent number: 11669029
    Abstract: An image forming apparatus includes a sheet tray, a feed roller, a transfer roller, a fuser, a conveying unit, and a controller configured to execute a normal process. The controller executes a particular process, when performing the single sided printing. The particular process is a process in which the controller is configured to execute a non-actual-printing process on a first surface of a first sheet, and then configured to execute the non-actual-printing on a first surface of a second sheet before executing an actual-printing process on a second surface of the first sheet. The non-actual-printing process is a process of conveying the sheet to the fuser without transferring the developer image onto the first surface of the sheet. The actual-printing process is a process of transferring the developer image onto the second surface of the sheet.
    Type: Grant
    Filed: November 18, 2021
    Date of Patent: June 6, 2023
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Shintaro Sakaguchi, Noriaki Kishimoto, Shuhei Fukue, Shunsuke Ueki
  • Patent number: 11669033
    Abstract: A heating device includes a rotatable film, a heater including a substrate that extends along a first direction and having two surfaces opposite to each other, and a heater element on one of the surfaces of the substrate, and a heat conductor having first and second surfaces and including a first portion contacting the other surface of the substrate, and a second portion that is adjacent to the first portion in a second direction perpendicular to the first direction and does not contact the other surface of the substrate. A thickness of the first portion of the heat conductor from the first surface to the second surface is greater than a thickness of the second portion from the first surface to the second surface.
    Type: Grant
    Filed: March 16, 2022
    Date of Patent: June 6, 2023
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Kazuhiko Kikuchi, Sasuke Endo, Masaya Tanaka, Ryota Saeki, Kiyotaka Murakami, Kousei Miyashita, Ryosuke Kojima, Yohei Doi, Yuki Kawashima, Eiji Shinohara
  • Patent number: 11662678
    Abstract: A fixing device includes a fixing rotator over which a recording medium bearing an image is conveyed. A first heater heats the fixing rotator and generates heat evenly in a maximum conveyance span where the recording medium having a maximum width in a width direction of the recording medium is conveyed. The maximum width is available for the fixing rotator. A second heater heats the fixing rotator and generates heat in the maximum conveyance span. The second heater includes a first portion that generates heat in a first heat generation amount and a second portion that generates heat in a second heat generation amount that is greater than the first heat generation amount of the first portion.
    Type: Grant
    Filed: November 24, 2021
    Date of Patent: May 30, 2023
    Assignee: RICOH COMPANY, LTD.
    Inventors: Ryohei Matsuda, Ryuuichi Mimbu, Toshihiko Shimokawa, Satoshi Kuno, Kentaro Yamanaka
  • Patent number: 11662682
    Abstract: Various embodiments disclose a method of detecting a media jam in a printer. The method includes causing a sensor unit of the printer to generate a sensor signal indicative of a reflectance characteristic associated with a surface of a roller of the printer. Further, the method includes receiving the sensor signal from the sensor unit of the printer and comparing the reflectance characteristic to a threshold reflectance characteristic associated with the roller. Furthermore, in response to the comparison, the method includes generating an output signal to indicate whether the media jam has occurred. For example, a first output signal indicates unsuccessful passage of a media along a media path of the printer, when the reflectance characteristic exceeds the threshold reflectance characteristic and a second output signal indicates successful passage of the media along the media path, when the reflectance characteristic is equal to or below the threshold reflectance characteristic.
    Type: Grant
    Filed: February 12, 2021
    Date of Patent: May 30, 2023
    Assignee: Hand Held Products, Inc.
    Inventor: Wenwei Zhang
  • Patent number: 11656569
    Abstract: An image forming apparatus includes a frame side plate. A mounting surface of the frame side plate on which a first electrical board is mounted has a frame protruding plate. An electrical box has a box protruding plate overlapping a side surface of the frame protruding plate when assembling of the electrical box to the frame side plate is completed, and engaging portions for assembling protruding in a thickness direction from the box protruding plate. When the electrical box is assembled to the frame side plate, with the engaging portions for assembling in engagement with first engaged portions formed on a protruding side end of the frame protruding plate, the electrical box as a whole is turned around an axis parallel to an extending direction of the frame protruding plate with the engaged portions as a fulcrum, thereby restricting a trajectory of the electrical box during assembling.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: May 23, 2023
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Takashi Kusukawa
  • Patent number: 11656572
    Abstract: A second unit includes a restricted portion that comes into contact with a restricting portion provided to a body of an apparatus, the restricted portion coming into contact with the restricting portion, in order to restrict the movement of a developer carrier in a direction to make contact with an image carrier, when a developing cartridge has not reached a predetermined attachment position, and not coming into contact with the restricting portion when the developing cartridge is in the predetermined attachment position.
    Type: Grant
    Filed: January 19, 2021
    Date of Patent: May 23, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Osamu Anan, Masato Tanabe, Tsukasa Abe, Kazutaka Sueshige
  • Patent number: 11644775
    Abstract: A heating device includes a heating roller having a resistance heat-generating layer that generates heat by passage of a current through the resistance heat-generating layer, a support member that supports a treatment portion in which a heating treatment is performed, a belt that is stretched between at least the heating roller and the support member and that rotates, and a pressure rotating body that rotates in such a manner as to press a sheet-shaped heating target that is an object to be subjected to a heating treatment against the treatment portion including an outer peripheral surface portion of the belt that is supported by the support member and in such a manner as to cause the heating target to pass through the treatment portion. The heating roller is not equipped with a power receiving component configured to receive a rotational power that is transmitted.
    Type: Grant
    Filed: August 31, 2021
    Date of Patent: May 9, 2023
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Takuma Ishihara, Takashi Ohashi, Takashi Matsubara