Patents Examined by William J. Royer
  • Patent number: 11150596
    Abstract: A waste toner storage container includes a container body, a toner storage chamber, and a paddle. The toner storage chamber includes an introduction port, a first space, and a second space. The introduction port receives waste toner. The first space stores the introduced waste toner, and extends in a first direction. The second space is disposed in an end portion of the first space in a second direction orthogonal to the first direction. The paddle includes a shaft, a first plate, and a second plate. The shaft is disposed in the first space, extends along the first direction, and is elongated. The first plate is formed on an outer peripheral surface around a central axis of the shaft, and conveys the waste toner in the first direction. The second plate is formed on the outer peripheral surface of the shaft, and conveys the waste toner toward the second space.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: October 19, 2021
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Tokihiko Ise, Hiroki Sakurada
  • Patent number: 11150593
    Abstract: An image forming apparatus includes: a photoconductor; a charging roller; an exposure device; a developing device that is provided on a downstream side of the charging roller in a rotation direction of the photoconductor, and forms a toner image by supplying toner to a latent image; a cleaning blade that is provided between a transfer part of a surface of the photoconductor located on a downstream side of the developing device in the rotation direction of the photoconductor and the charging roller, and removes residual toner adhering to a part of the surface of the photoconductor on a downstream side of the transfer part; a lubricant supplier that supplies a lubricant to the surface of the photoconductor; and a voltage controller that controls a charging voltage to be applied to the charging roller.
    Type: Grant
    Filed: March 5, 2021
    Date of Patent: October 19, 2021
    Assignee: Konica Minolta, Inc.
    Inventor: Junichi Arai
  • Patent number: 11150573
    Abstract: A developing cartridge includes a casing, a rotating member, and an electrode member. The casing may be configured to accommodate therein developer. The rotating member has a rotational shaft extending in an axial direction. The rotating member is configured to rotate about the rotational shaft and carries the developer thereon. The electrode member is configured to be electrically connected to the rotating member. The electrode member covers at least part of the rotational shaft from an orthogonal direction orthogonal to the axial direction and is arranged to confront the casing in the axial direction. The electrode member is configured to move in the orthogonal direction in accordance with a movement in the axial direction.
    Type: Grant
    Filed: July 22, 2020
    Date of Patent: October 19, 2021
    Assignee: BROTHER KOGOYO KABUSHIKI KAISHA
    Inventors: Yasumasa Fujii, Tsutomu Suzuki, Hiroshi Igarashi
  • Patent number: 11150594
    Abstract: An image forming apparatus includes an image carrier to rotate about a rotation axis, a cleaning blade to contact a surface of the image carrier, and a protective agent coater. The protective agent coater has a rotatable shaft extending along the rotation axis of the image carrier, an elastic body formed around the rotatable shaft, and a waste toner supply member. The waste toner supply member supplies waste toner to the elastic body of the protective agent coater. The elastic body transfers protective agent from a protective agent supply to the image carrier. The protective agent coater is positioned upstream of the cleaning blade in the rotation direction of the image carrier.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: October 19, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Yasuyuki Ishii, Takayuki Wakai, Yoichi Yoshida
  • Patent number: 11143988
    Abstract: A belt driving device to drive an endless belt, includes a drive roller and a suspension roller which extend in a first direction and face each other in a second direction. The belt driving device includes a steering roller located between the drive roller and the suspension roller in a tiltable manner. A pulley (or wheel) is located at an end portion of the steering roller. The belt driving device includes a link mechanism which presses the end portion of the steering roller to tilt the steering roller with the movement of the pulley (or wheel).
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: October 12, 2021
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Koji Miyake, Satoru Hori, Yuji Aoshima, Kensuke Nakajima
  • Patent number: 11143992
    Abstract: An image forming apparatus includes a housing, a unit including a drive member and being positioned to the housing, and a drive device configured to rotate the drive member in a normal direction and a reverse direction. The drive device includes a housing-side gear mounted on the housing, and a unit-side gear mounted on the unit, the unit-side gear being configured to mesh with the housing-side gear. The drive device transmits a driving force to the drive member, the driving force causes a force from the housing-side gear to the unit-side gear, the force includes a component force in a direction to detach the unit from the housing, and the component force is smaller than a static friction force between the unit and the housing.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: October 12, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventor: Shogo Sakamoto
  • Patent number: 11137702
    Abstract: A fixing unit includes a heater, a fixing member, a press roller, a sensor, a processor, and a memory. The fixing member is heated by heat generated by the heater. The press roller forms a nip portion through which a medium having a fixing target material transferred thereto passes, between the press roller and the fixing member. The sensor measures a temperature of the fixing member. The processor controls the temperature of the fixing member so as to be a target value by acquiring the temperature detected by the sensor in a first period, and also acquires the temperature detected by the sensor in a second period shorter than the first period. The memory records the temperature acquired in the second period.
    Type: Grant
    Filed: October 23, 2020
    Date of Patent: October 5, 2021
    Assignees: KABUSH1 Kl KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Ken Iguchi
  • Patent number: 11126136
    Abstract: An image forming apparatus includes: a drawer movable in a first direction from an inside position to an outside position via an intermediate position; a stopper movable between a first position at which the stopper stops the drawer from moving from the intermediate position to the outside position, and a second position at which the stopper allows the drawer to move from the intermediate position to the outside position; a drum cartridge including a photoconductive drum and mountable on the drawer; and a developing cartridge including a developing roller and mountable on the drawer. The developing cartridge mounted on the drawer is removable from the drawer in a state in which the drawer is located at the intermediate position. The drum cartridge mounted on the drawer is removable from the drawer in a state in which the drawer is located at the outside position.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: September 21, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Shougo Sato, Kazuna Taguchi
  • Patent number: 11126105
    Abstract: An image forming apparatus includes a first sensor configured to measure measurement images on a first photoreceptor, a second sensor configured to measure measurement images on an intermediate transfer member, and a controller. The controller controls a first image forming unit to form first measurement images, wherein the first measurement images are formed along a rotation direction of the first photoreceptor, and controls the first sensor to measure the first measurement images on the first photoreceptor. The controller further controls the first image forming unit and a second image forming unit to form a plurality of measurement images while a rotation speed of the first photoreceptor is being controlled based on a measurement result of the first sensor, wherein the plurality of measurement images are formed along the predetermined direction of the intermediate transfer member.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: September 21, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventor: Koichi Taniguchi
  • Patent number: 11119437
    Abstract: In an example, a cleaning station comprises a wiper blade to scrape cleaning fluid across a surface of a component of a print apparatus. A suction pump is to remove a cleaning fluid from a surface of the component of the print apparatus. A sensor is to determine the thickness of cleaning fluid on a surface of the component of the print apparatus. A controller is to vary a suction pressure of the suction pump based on measurements of the sensor.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: September 14, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Lavi Cohen, Michael Vinokur, Sasha Zilbershtein, Hanan Sachs
  • Patent number: 11112724
    Abstract: A printer including a body, a developer cartridge, and a developer level sensor. The body includes a printing unit to print an image on a print medium based on electrophotography. The developer cartridge is attachable to the body and includes a developer container including a developer, and a developer outlet provided at a length-direction side of the developer container to supply the developer from the developer container to the printing unit. The developer level sensor is installed on the body near the developer outlet to generate an electrical detection signal based on a developer level in the developer container.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: September 7, 2021
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Jong Hyun Park, Myung Kook Ahn, Seil Kwon
  • Patent number: 11112720
    Abstract: An image forming unit forms an image on a sheet. A first generation circuit generates, regarding a member involved in image formation in the image forming unit, a first signal relating to a first abnormality. A second generation circuit generates, regarding the member, a second signal that relates to a second abnormality different from the first abnormality, and whose feature in a time axis direction or a frequency axis direction is different from that of the first signal. A control circuit has a single port to which the first signal and the second signal are to be input. The control circuit identifies between the first signal and the second signal based on a feature of a signal input to the port.
    Type: Grant
    Filed: July 14, 2020
    Date of Patent: September 7, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventor: Satoshi Ogawara
  • Patent number: 11112719
    Abstract: Provided is a process cartridge in which lateral running is suppressed while satisfactory potential fluctuation is maintained. The process cartridge includes: an electrophotographic photosensitive member including a support, a lowermost layer, and a photosensitive layer; and a charging member including a support and a conductive layer. In a case where a maximum frequency at which a phase of an impedance reaches 45°, when the impedance is measured by applying an AC voltage to the lowermost layer while changing the AC voltage, is represented by fOPC (Hz), and in a case where a maximum frequency at which a phase of an impedance reaches 45°, when the impedance is measured by applying an AC voltage to the charging member while changing the AC voltage, is represented by fC (Hz), the fOPC and the fC each have a value within a certain range.
    Type: Grant
    Filed: October 7, 2020
    Date of Patent: September 7, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kohei Makisumi, Kaname Watariguchi, Fumiyuki Hiyama, Kazuhiro Yamauchi, Yuichi Kikuchi
  • Patent number: 11112723
    Abstract: An image forming apparatus of an embodiment includes an image forming unit, a waste toner collection container, a paddle motor, a memory unit, and a control unit. The image forming unit forms a toner image on a sheet using a toner replenished from a toner cartridge containing the toner. The waste toner collection container contains a waste toner generated in the image forming unit. The paddle motor rotates a stirring paddle provided in the waste toner collection container. The memory unit stores a coefficient for each type of toner. The control unit acquires a count value, which is a value related to a replenishment amount, corrects the count value with the coefficient corresponding to the type of toner, updates a cumulative count value with the corrected count value, and drives the paddle motor according to the updated cumulative count value.
    Type: Grant
    Filed: November 11, 2020
    Date of Patent: September 7, 2021
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Ken Iguchi, Kazuhiko Kikuchi, Tadashi Sugiyama, Tokihiko Ise
  • Patent number: 11106158
    Abstract: A powder supply device includes: a storage unit that stores a mixed agent including a functional material-containing powder and magnetic powder, the storage unit being provided with a discharge port through which a part of the stored mixed agent is discharged; a supply unit that holds the mixed agent and supplies the functional material-containing powder from the storage unit; and a magnetic body that covers at least a part of the discharge port and forms a nap of the mixed agent to prevent the mixed agent that is dispersed in air from flowing out through the discharge port.
    Type: Grant
    Filed: August 4, 2020
    Date of Patent: August 31, 2021
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Sakae Yoshioka, Takashi Sakamoto
  • Patent number: 11092921
    Abstract: An image forming apparatus includes: a photoconductor; a transfer portion; a photoconductor cleaner that removes residual toner from a surface of the photoconductor; and a first processor that forms a toner patch on the surface of the photoconductor. When the toner patch passes the transfer portion, the transfer portion makes the toner patch stay on the surface of the photoconductor such that toner of the toner patch is able to be supplied to the photoconductor cleaner. The first processor further determines an amount of toner for the toner patch with reference to a circumferential distance the photoconductor travels for a predetermined period of time.
    Type: Grant
    Filed: August 12, 2020
    Date of Patent: August 17, 2021
    Assignee: KONICA MINOLTA, INC.
    Inventor: Yusuke Murakami
  • Patent number: 11086263
    Abstract: A cleaning device includes an accommodating container, a collector, and a remover. The accommodating container has an opening and a receiving port. The collector is in contact with a surface of a cleaned body while rotating, to remove matter on the surface of the cleaned body. The remover has a tip end that is in contact with the surface of the cleaned body to remove the matter. The accommodating container accommodates the collector and the remover. The collector and the remover are exposed to the cleaned body through the opening. The accommodating container receives, through the receiving port, the matter removed from the cleaned body. The accommodating container is supported in such a manner that the accommodating container can rotate to a position where the matter collected in the accommodating container do not leak through the opening, so as to be separated from the cleaned body.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: August 10, 2021
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Arichika Tanaka, Toyohiko Awano
  • Patent number: 11086264
    Abstract: A device for removing toner attached to a transfer roller in an image forming apparatus is disclosed. The device includes a bar brush to contact an outer circumferential surface of the transfer roller, where the bar brush extends along a part of a longitudinal length of the transfer roller. The device includes an elongated cleaning member to contact the outer circumferential surface of the transfer roller, where the elongated cleaning member extends along the longitudinal length, entirely, of the transfer roller.
    Type: Grant
    Filed: May 22, 2019
    Date of Patent: August 10, 2021
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Satoru Furuya, Shun Ikeura, Satoru Hori
  • Patent number: 11086258
    Abstract: An image forming apparatus sets, on an image forming unit, one of a first transfer condition that does not cause an image to be formed on a sheet and a second transfer condition that causes an image to be formed on the sheet. The apparatus generates a first reading result by reading the sheet that has passed through the image forming unit set in the first transfer condition, and generates a second reading result by reading the sheet that has passed through the image forming unit set in the second transfer condition. The apparatus detects toner fogging based on the first reading result and a reading result out of the second reading result, the reading result concerning a non-image region in which no image is formed on a surface of the sheet.
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: August 10, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yu Izaki, Masahiro Suzuki, Shun-ichi Ebihara
  • Patent number: 11086247
    Abstract: An assembly for an electrophotographic image forming device according to one example includes a rotatable roll having an electrically conductive shaft. An electrically conductive bracket is positioned adjacent to the roll and in a spaced relationship from the roll along a length of the roll. An electrical contact is positioned to receive an electrical voltage from a power supply of the image forming device. The electrical contact is electrically connected to a first end portion of the shaft of the roll by way of a first electrical path and to a second end portion of the shaft of the roll by way of a second electrical path to transfer the electrical voltage to the roll. The bracket forms a portion of the second electrical path such that the electrical voltage transferring from the electrical contact to the second end portion of the shaft of the roll passes through the bracket.
    Type: Grant
    Filed: October 28, 2020
    Date of Patent: August 10, 2021
    Assignee: Lexmark International, Inc.
    Inventor: Jeffrey Lawrence Tonges