Patents Examined by Sandra Brase
  • Patent number: 11327418
    Abstract: A developing cartridge may include: a casing; a developing roller extending in a first direction; a developing-roller gear; a coupling including a coupling gear; a first idle gear; a second idle gear; an agitator; a first agitator gear; and a protrusion. The developing-roller gear, the coupling, the first idle gear, the second idle gear, the first agitator gear, and the protrusion may be positioned at an outer surface of the casing. The protrusion may be positioned between a first axis of the coupling and a third axis of the first agitator gear in a second direction connecting the first and third axes. The protrusion may be positioned outside an addendum circle of the developing-roller gear, an addendum circle of the coupling gear, an addendum circle of the first idle gear, and an addendum circle of the second idle gear. The first agitator gear may be spaced apart from the protrusion in the first direction.
    Type: Grant
    Filed: February 18, 2021
    Date of Patent: May 10, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yasuo Fukamachi, Kazuna Taguchi, Takuya Kanda
  • Patent number: 11314186
    Abstract: An image forming apparatus includes an image bearing member, a developer container, a developing portion, a replenishment port configured to allow replenishment of one-component developer from a replenishment container, a conveyance portion configured to convey the developer accepted for replenishment through the replenishment port toward the developing portion, a developer remainder amount detection portion whose output value changes on a basis of an amount of developer accommodated in the developer container. A controller changes a developer conveyance speed of the conveyance portion in a conveyance operation on a basis of the output value of the developer remainder amount detection portion, the conveyance operation being an operation of conveying developer toward the developing portion by the conveyance portion and is performed before the image forming operation is started.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: April 26, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Nobuo Oshima, Satoru Motohashi
  • Patent number: 11314198
    Abstract: A photosensitive member cartridge detachably mountable to a main assembly of an image forming apparatus for forming an image, includes a frame; a photosensitive drum on which and which is provided in the frame; a transfer member for transferring an image formed on the drum onto the sheet; a mounting portion for detachably mounting a developing cartridge including a developer carrying member onto the drum and a memory for storing information; a first electrical contact provided on the frame and electrically connectable with a main assembly electrical contact provided in the main assembly when the cartridge is mounted to the main assembly; and a second electrical contact provided on the frame for electrically connecting the memory and the first electrical contact portion with each other when the developing cartridge is mounted to the mounting portion.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: April 26, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Jun Miyamoto, Masao Uyama, Kenji Matsuda, Ken Kikuchi, Jun Miyazaki
  • Patent number: 11307509
    Abstract: An electro-conductive layer of an electrophotographic electro-conductive member has a matrix-domain structure. The matrix contains a first rubber. The domain contains a second rubber and electro-conductive particles. Where ? represents an average of ratios of the cross-sectional area of the electro-conductive particles contained in each of the domains to the cross-sectional area of each of the domains appearing on a cross-section of the electro-conductive layer in a thickness direction, and ? represents a standard deviation of the ratios, ?/? is 0 or more and 0.4 or less, and ? is 20% or more and 40% or less. At least eight of samples with a first cubic shape 9 ?m on a side, which are sampled at arbitrary nine positions on the electro-conductive layer, satisfy the specified condition.
    Type: Grant
    Filed: October 15, 2020
    Date of Patent: April 19, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tetsuo Hino, Yasuhiro Fushimoto, Norifumi Muranaka, Masafumi Kyogaku, Masaki Yamada, Hiroshi Inoue, Takumi Furukawa, Hiroaki Watanabe, Kenya Terada, Yuya Tomomizu, Toshimitsu Nakazawa
  • Patent number: 11300915
    Abstract: A transport guide device includes: a first guide unit including a guide portion configured to guide a sheet-shaped object along a transport path; and a second guide unit including a fixed first end portion and a non-fixed second end portion opposite to the fixed first end portion, the second end portion (i) approaching the guide portion toward a downstream side in a transport direction of the sheet-shaped object and then contacts with the guide portion or (ii) approaching the guide portion toward the downstream side in the transport direction of the sheet-shaped object, the second guide unit being configured to guide the sheet-shaped object such that the sheet-shaped object comes into contact with the guide portion, in which the second guide unit includes a tip end protrusion at a tip end of the second end portion, the tip end protrusion protruding in a direction away from the guide portion.
    Type: Grant
    Filed: January 6, 2021
    Date of Patent: April 12, 2022
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Atsushi Kaneko, Keita Hashimoto, Hirokazu Ichihara
  • Patent number: 11300909
    Abstract: According to one embodiment, a heating device includes a belt and a heat generating member. The belt has a tubular shape. The heat generating member is provided inside the belt. The heat generating member is formed in an arc shape along the inner peripheral surface of the belt. The heat generating member is slidably in contact with the inner peripheral surface of the belt. When the amount of deflection of the belt is D, the radius of curvature of the inner peripheral surface of the belt is A, and the radius of curvature of the outer peripheral surface of the heat generating member is B, the following equations (1) and (2) are satisfied: D?10 mm??(1) 0.4 mm?A?B?0 mm??(2).
    Type: Grant
    Filed: June 3, 2021
    Date of Patent: April 12, 2022
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Shuji Yokoyama
  • Patent number: 11294321
    Abstract: An image forming apparatus includes an image forming portion and a post-processing portion, a first frame, a second frame and a connection member. The first frame includes a first section for supporting a photosensitive member and a second section bent from a bottom end of the first section. The second frame, to which an electronic circuit board is attached, supported by the second section of the first frame without being fixed to the first section of the first frame. The connection member is connected with the second frame and a third frame which is a frame of the post-processing portion.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: April 5, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventor: Ko Katahira
  • Patent number: 11294323
    Abstract: An air bearing assembly is disclosed. The air bearing assembly may comprise a print component to interact with an imaging plate, the imaging plate being rotatable relative to the print component. The air bearing assembly may comprise an air bearing pad positioned adjacent to a surface of the imaging plate, the air bearing pad to generate a cushion of air to maintain a defined distance between the print component and the imaging plate. A method and a print apparatus are also disclosed.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: April 5, 2022
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Israel Katz, Boris Khodos, Avi Barazani, Sergio Turnowski
  • Patent number: 11294325
    Abstract: An image forming apparatus including a main body casing, a drum cartridge, a developing cartridge, and an intermediate transfer belt. The drum cartridge includes a photosensitive drum, a drum frame, and a first memory. The intermediate transfer belt is positioned above of the drum cartridge and the developing cartridge in a state where the drum cartridge and the developing cartridge are attached to the main body casing. The drum frame includes a first end and a second end being apart from the first end in an up-down direction. The photosensitive drum is positioned at the first end. The first memory is positioned at the second end.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: April 5, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Junichi Yokoi, Nao Itabashi
  • Patent number: 11287774
    Abstract: Example safety mechanisms for example printing apparatuses are provided. An example printing apparatus may include at least one linear guide disposed on a first surface of a back-spine section of a printer body and a top chassis portion coupled to the at least one linear guide. In some examples, the top chassis portion may include a laser safety casing. In some examples, the laser safety casing may comprise a laser module configured to emit a laser beam along a laser path and a safety cover that is moveable to a first cover position intersecting the laser path.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: March 29, 2022
    Assignee: DATAMAX-O'NEIL CORPORATION
    Inventors: David Pratama Djayaputra, Florante Go, S├ębastien Michel Marie Joseph D'Armancourt, Fong Yin Lau
  • Patent number: 11281134
    Abstract: A temperature control device controls a temperature of a temperature control target to which heat propagates from a heater by supplying power to the heater and includes a control circuit. The control circuit includes a temperature estimation unit and a control signal generation unit. The temperature estimation unit estimates the temperature of the temperature control target based on conduction to the heater. The control signal generation unit outputs a conduction pulse for controlling power to be supplied to the heater based on a temperature estimation result and a temperature detection result of the temperature control target by a temperature sensor.
    Type: Grant
    Filed: December 29, 2020
    Date of Patent: March 22, 2022
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Yutaka Usami
  • Patent number: 11281156
    Abstract: A photosensitive member cartridge detachably mountable to a main assembly of an image forming apparatus for forming an image, includes a frame; a photosensitive drum on which and which is provided in the frame; a transfer member for transferring an image formed on the drum onto the sheet; a mounting portion for detachably mounting a developing cartridge including a developer carrying member onto the drum and a memory for storing information; a first electrical contact provided on the frame and electrically connectable with a main assembly electrical contact provided in the main assembly when the cartridge is mounted to the main assembly; and a second electrical contact provided on the frame for electrically connecting the memory and the first electrical contact portion with each other when the developing cartridge is mounted to the mounting portion.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: March 22, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Jun Miyamoto, Masao Uyama, Kenji Matsuda, Ken Kikuchi, Jun Miyazaki
  • Patent number: 11281150
    Abstract: An overturning prevention device includes a holding member disposed at a bottom surface portion of an apparatus, and an overturning prevention member configured to be held by the holding member. The apparatus includes a wheel unit including a wheel, a fitting portion, and a support shaft. The holding member is disposed at a position nearer to a center of the bottom surface portion than the support shaft when viewed from above. The overturning prevention member includes, a projecting portion configured to project outside the bottom surface portion, and a held portion configured to be held by the holding member, the projecting portion and the held portion being connected with each other. The overturning prevention member is configured to be attached to and detached from the holding member by being moved in an attaching direction in which the held portion and the projecting portion are connected.
    Type: Grant
    Filed: April 16, 2021
    Date of Patent: March 22, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yuji Nakayashiki
  • Patent number: 11275334
    Abstract: Provided is an image forming apparatus including a developer that performs development with toner, the image forming apparatus including a vibrator that applies vibrations to a vibrated portion of the developer, and a hardware processor that controls the vibrator. The hardware processor determines a toner leakage level based on a result of detecting toner leakage adhering to a sheet caused by the image forming apparatus, settles a vibrating condition of the vibrator in accordance with the toner leakage level, and causes the vibrator to perform a vibrating operation under the settled vibrating condition.
    Type: Grant
    Filed: May 14, 2021
    Date of Patent: March 15, 2022
    Assignee: KONICA MINOLTA, INC.
    Inventors: Kazutoshi Kobayashi, Tomohiro Kawasaki, Keiki Katsumata, Kei Okamura
  • Patent number: 11269277
    Abstract: According to an embodiment, an image forming apparatus includes a motor of which driving current value changes according to a load, an image forming unit, a measuring unit, and a setting unit. The measuring unit forms an image on a medium by using a rotation body rotated by a motor. The measuring unit measures the driving current value of the motor. When a rotation speed of the motor is set to a first speed, the setting unit continues to set the first speed if the driving current value measured by the measuring unit falls within a first range. The setting unit sets a second speed lower than the first speed as the rotation speed if the driving current value measured by the measuring unit falls within a second range higher than the first range.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: March 8, 2022
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Hiroyuki Taki
  • Patent number: 11262676
    Abstract: A fixing device fixes a toner image to a medium conveyed in a conveying direction, the toner image formed on the medium, the fixing device including a heating rotating body, a heater, a pressing member, a pressing rotating body, and a lubricant holding member. The heater heats the heating rotating body, which is supported to be rotatable. The pressing member is disposed inside the heating rotating body. The pressing rotating body is pressed against the pressing member through the heating rotating body to form a nip through which the medium passes. The lubricant holding member has an abutting surface that abuts against an inner circumferential surface of the heating rotating body, and the abutting surface includes a first region filled with a first lubricant and a second region filled with a second lubricant.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: March 1, 2022
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Takaho Watanabe
  • Patent number: 11262690
    Abstract: An image-forming device includes a main casing, a belt accommodated in the main casing, developing units arranged along the belt, a drawer configured to detachably support the developing units, the drawer configured to move to a position inside the main casing and to a position outside the main casing, and the drawer having a leading end and a trailing end in a pulling direction from the inside position to the outside position; and a guide configured to guide the drawer and to move between a first position and a second position when the drawer is at the inside position, the second position being farther from the belt than the first position from the belt. When the guide is at the second position, the guide is configured to be tilted downward relative to a horizontal direction such that the leading end is lower than the trailing end.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: March 1, 2022
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Motoaki Mushika, Shougo Sato
  • Patent number: 11249418
    Abstract: A developing roller is located nearer a first end than a second end in a first direction. A first boss extends in a second direction and is movable together with a housing. The first boss bears the weight of a developer cartridge when the first boss is supported by a support surface of a first side plate of a drum unit, and is located away from the developing roller in the first direction and the third direction. A first pressure receiving surface is located farther away from the developing roller than the first boss in the third direction. The pressure receiving member receives a pressing force in the third direction from a pressing member of the first side plate of the drum unit. The first boss is located away from the developing roller in the first direction by a first distance. The first pressure receiving surface is located away from the developing roller in the first direction by the first distance or by a second distance smaller than the first distance.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: February 15, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yuwen Wang, Kazuaki Ooka, Isao Kishi, Junichi Hashimoto
  • Patent number: 11237514
    Abstract: An image forming apparatus has a body frame and a slide frame. The slide frame is configured to be pulled out from the body frame along a sliding direction. A plurality of image forming cartridges is detachably mounted on the slide frame. A plurality of electrode members is mounted on the slide frame and aligned along the sliding direction so as to correspond to the image forming cartridges. A body-side contact portion of each of the electrode members is electrically connected to the body frame. A cartridge-side contact portion of the electrode member is electrically connected to the image forming cartridge. The image forming cartridge is connected to the body via the corresponding electrode member when the slide frame mounting the image forming cartridges is inserted to the body frame.
    Type: Grant
    Filed: November 16, 2020
    Date of Patent: February 1, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Yasushi Okabe
  • Patent number: 11221568
    Abstract: A toner container includes a housing having a toner reservoir. An input gear is positioned on the housing for mating with a corresponding output gear in an image forming device when the toner container is installed in the image forming device. A toner agitator is movably positioned in the reservoir. The toner agitator is operatively connected to the input gear such that rotation of the input gear in a first rotational direction causes movement of the toner agitator for agitating toner in the reservoir. An encoded member is encoded with authentication information of the toner container and is operatively connected to the input gear such that rotation of the input gear in a second rotational direction causes movement of the encoded member for communicating the authentication information of the toner container to a controller of the image forming device when the toner container is installed in the image forming device.
    Type: Grant
    Filed: November 3, 2020
    Date of Patent: January 11, 2022
    Assignee: Lexmark International, Inc.
    Inventors: Randal Scott Williamson, Virgil Johnson, Jr.