Drive Apparatus Patents (Class 399/167)
  • Patent number: 11500321
    Abstract: An image-forming apparatus includes: a photosensitive drum, a motor, and a drum gear train configured to transmit a driving force from the motor to the photosensitive drum. The drum gear train includes a first gear, a second gear and a first clutch. The first gear is rotatable about a first axis upon receipt of the driving force. The second gear is rotatable about the first axis and configured to receive the driving force from the first gear and to transmit the driving force to the photosensitive drum. The first clutch is switchable between a first transmission state where the driving force is transmitted from the first gear to the second gear and a first transmission cutoff state where the transmission of the driving force from the first gear to the second gear is cut off.
    Type: Grant
    Filed: May 17, 2021
    Date of Patent: November 15, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Kazutoshi Nakamura, Tomitake Aratachi, Sota Hirano, Kazuma Hinoue, Shintaro Suzuki, Ayaka Komori, Marika Ozaki
  • Patent number: 11467528
    Abstract: A universal coupler includes: a driving shaft, a coupler holder, driving coupler, a driving coupling pin, and an elastic member. The driving shaft has a driving shaft a first pin hole. The coupler holder includes a bore, a separation prevention member that partially blocks the bore, and a coupling groove formed in the bore. The driving coupler includes a spherical portion that is located in the bore and in contact with the separation prevention member, a shaft insertion portion formed through the spherical portion, and a second pin hole that penetrates the spherical portion. The driving coupling pin is insertable into the driving pin hole, and has an end insertable into the coupling groove. The elastic member applies elasticity to the coupler holder in a direction that urges the spherical portion of the driving coupler against the separation prevention member.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: October 11, 2022
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jaeil Yu, Taeil Jung, Tae-Hee Kim
  • Patent number: 11402798
    Abstract: A process cartridge includes a frame having a slit and a recess formed therein at a side of the process cartridge. A photosensitive drum is supported by the frame, with the photosensitive drum being rotatable about an axis thereof, the photosensitive drum including a first end and a second end opposite to the first end. A developing roller is also supported by the frame, the developing roller being rotatable about an axis thereof. A coupling is operatively connected to the photosensitive drum, with the coupling being rotatable about an axis thereof. A helical gear is positioned at the side of the process cartridge, with the helical gear being rotatable about an axis thereof. The helical gear has a plurality of teeth, with at least some of the teeth being exposed teeth that are uncovered by the frame and exposed to outside of the process cartridge.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: August 2, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryuta Murakami, Tadashi Horikawa, Shunsuke Uratani, Yuichiro Inaba
  • Patent number: 11392081
    Abstract: A process cartridge includes a frame having a slit and a recess formed therein at a side of the process cartridge. A photosensitive drum is supported by the frame, with the photosensitive drum being rotatable about an axis thereof, the photosensitive drum including a first end and a second end opposite to the first end. A developing roller is also supported by the frame, the developing roller being rotatable about an axis thereof. A coupling is operatively connected to the photosensitive drum, with the coupling being rotatable about an axis thereof. A helical gear is positioned at the side of the process cartridge, with the helical gear being rotatable about an axis thereof. The helical gear has a plurality of teeth, with at least some of the teeth being exposed teeth that are uncovered by the frame and exposed to outside of the process cartridge.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: July 19, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryuta Murakami, Tadashi Horikawa, Shunsuke Uratani, Yuichiro Inaba
  • Patent number: 11381191
    Abstract: A motor control apparatus includes: an excitation unit configured to excite a plurality of excitation phases of a motor; a measurement unit configured to measure a physical amount that changes according to an inductance of at least one of a plurality of coils that make up the plurality of excitation phases, when each of the plurality of excitation phases is excited; and a determination unit configured to determine a type of the motor based on measurement values of the physical amount measured by the measurement unit when each of the plurality of excitation phases is excited.
    Type: Grant
    Filed: January 3, 2020
    Date of Patent: July 5, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takuya Miyashita, Eijiro Ohashi, Yasukazu Maeda
  • Patent number: 11372362
    Abstract: An image forming apparatus includes a developing roller, a photo-interrupter, and a separation mechanism. The developing roller is movable between a contact position and a separated position. The photo-interrupter includes a light emitting element and a light receiving element. The separation mechanism includes a cam configured to move the developing roller between the contact position and the separated position. The cam includes a phase detection wall extending in a circumference direction. The phase detection wall has a first slit and a second slit. The first slit allows the light emitted from the light emitting element to pass therethrough when the developing roller is at the separated position. The second slit allows the light emitted from the light emitting element to pass therethrough when the developing roller is at the contact position. A size of the first slit in the circumferential direction is different from that of the second slit.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: June 28, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yusuke Ikegami, Masahito Saeki, Toshiyuki Sano, Shintaro Sakaguchi
  • Patent number: 11366424
    Abstract: A process cartridge includes a frame having a slit and a recess formed therein at a side of the process cartridge. A photosensitive drum is supported by the frame, with the photosensitive drum being rotatable about an axis thereof, the photosensitive drum including a first end and a second end opposite to the first end. A developing roller is also supported by the frame, the developing roller being rotatable about an axis thereof. A coupling is operatively connected to the photosensitive drum, with the coupling being rotatable about an axis thereof. A helical gear is positioned at the side of the process cartridge, with the helical gear being rotatable about an axis thereof. The helical gear has a plurality of teeth, with at least some of the teeth being exposed teeth that are uncovered by the frame and exposed to outside of the process cartridge.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: June 21, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryuta Murakami, Tadashi Horikawa, Shunsuke Uratani, Yuichiro Inaba
  • Patent number: 11334021
    Abstract: An image forming apparatus, having a first developing roller, a second developing roller, a third developing roller, a fourth developing roller, a first photosensitive drum, a second photosensitive drum, a third photosensitive drum, a fourth photosensitive drum, a motor, a first output gear, a first gear train, and a second gear train, is provided. The first output gear is arranged coaxially with the motor and outputs a driving force from the motor. The first gear train includes a first intermediate gear meshing with the first output gear and transmits the driving force from the motor through the first output gear to the first, second, third, and fourth developing rollers. The second gear train includes a second intermediate gear meshing with the first output gear and transmits the driving force from the motor through the first output gear to the first, second, third, and fourth photosensitive drums.
    Type: Grant
    Filed: March 26, 2021
    Date of Patent: May 17, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Wataru Yamaguchi, Daisuke Ishizuka
  • 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: 11262681
    Abstract: An image forming apparatus includes: a motor which is provided in a housing of the image forming apparatus; a first gear which includes a rotation shaft axially supported by the housing; a first bearing and a second bearing which support the rotation shaft of the first gear and are arranged on one side and the other side of the first gear; a second gear which includes a rotation shaft and meshes with the first gear; a rotating member to which the second gear is attached and which is rotatable with respect to the housing so as to be positioned at a first position at which the first gear and the second gear mesh with each other and at a second position at which the second gear is separated from the first gear; a third bearing and a fourth bearing which support the rotation shaft of the second gear and are arranged on one side and the other side of the second gear; and a holding member which is provided in the housing integrally holds the first bearing and the second bearing, the holding member having a first gr
    Type: Grant
    Filed: May 20, 2020
    Date of Patent: March 1, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasumasa Kido, Shin-ichi Sugiyama, Takashi Hiratsuka
  • Patent number: 11249439
    Abstract: An interface drive coupler for a replaceable unit of an electrophotographic image forming device according to one example embodiment includes a first component and a second component coaxial with the first component along a rotational axis of the interface drive coupler. A force receiving portion is positioned on the first component and a force transmitting portion is positioned on the second component. One of the first component and the second component includes a male connector and the other of the first component and the second component includes a female connector that matably receives the male connector. Each of the male connector and the female connector includes a helical thread that extends circumferentially around the rotational axis of the interface drive coupler and that is angled in an operative rotational direction of the interface drive coupler in a direction from the force receiving portion toward the force transmitting portion.
    Type: Grant
    Filed: January 15, 2021
    Date of Patent: February 15, 2022
    Assignee: Lexmark International, Inc.
    Inventor: Brian Lee Hawes
  • Patent number: 11237517
    Abstract: A process cartridge comprises an electrophotographic photosensitive drum having a photosensitive layer at a peripheral surface thereof, and process means actable on the electrophotographic photosensitive drum. The process cartridge also includes a coupling member capable of taking a rotational force transmitting angular position for transmitting the rotational force for rotating the electrophotographic photosensitive drum to the electrophotographic photosensitive drum and a disengaging angular position in which the coupling member is inclined away from the axis of the electrophotographic photosensitive drum from the rotational force transmitting angular position.
    Type: Grant
    Filed: November 25, 2020
    Date of Patent: February 1, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takahito Ueno, Shigeo Miyabe, Masanari Morioka, Masato Hisano
  • Patent number: 11237497
    Abstract: In an image forming apparatus, when a first sheet and a second sheet are subjected to printing and the second sheet is being conveyed at a particular timing after a sheet sensor detected passage of a trailing end of the first sheet, and when a sheet interval between the first sheet and the second sheet is equal to or greater than a particular threshold interval, a controller positions first and second developing rollers to first and second separated positions, respectively, after developing of images to be transferred onto the first sheet has been completed, positions the developing rollers to be used for printing on the second sheet to respective contact positions, and starts developing images to be transferred on the second sheet. The controller is further configured to perform a color printing using both the first and second developing rollers, and a monochromatic printing using only the second developing roller.
    Type: Grant
    Filed: September 18, 2020
    Date of Patent: February 1, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Shintaro Sakaguchi, Toshiyuki Sano, Masahito Saeki
  • Patent number: 11226578
    Abstract: An image forming apparatus includes: a first gear train including a first clutch; a second gear train including a second clutch; a third gear train including a third clutch; a fourth gear train including a fourth clutch; a motor including an output shaft; an output gear rotatable with the output shaft; a fifth gear train connected to the first and second clutches; and a sixth gear train connected to the third and fourth clutches. The first clutch engages transmission of a driving force to a first developing unit, the second clutch engages transmission of a driving force to a second developing unit, the third clutch engages transmission of a driving force to a third developing unit, and the fourth clutch engages transmission of a driving force to a fourth developing unit. The fifth and sixth gear trains are connected to the output gear independently from each other.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: January 18, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Kotaro Haruta, Hiroshi Nakano
  • Patent number: 11226572
    Abstract: A toner cartridge is mountable on a developing device including a developing roller. The developing device develops an electrostatic latent image formed on a photo conductor. The toner cartridge includes a housing in which toner is stored, and an auger rotatable and configured to supply the toner in the housing to the developing device. In a case where the developing device is installed on an image forming apparatus in a state in which the toner cartridge is mounted on the developing device, rotation of the auger is started before formation of the electrostatic latent image corresponding to a sheet is started, based on a signal indicating that the image forming apparatus detects the sheet.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: January 18, 2022
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Takashi Suzuki, Kazuma Hinoue, Takashi Shimizu, Takashi Yasuda, Yoshifumi Kajikawa
  • Patent number: 11226579
    Abstract: An image forming apparatus, having first, second, third, and fourth photosensitive drums, first, second, third, and fourth developing rollers, a development-driving gear, a development motor, a first development gear train having a first gear, a second development-gear train having a second gear, a process-driving gear, a process motor, a first process-gear train having a third gear, and a second process gear-train having a fourth gear, is provided. The first development-gear train transmits a driving force from the development motor to the first and second developing rollers. The second development-gear train transmits the driving force from the development motor to the third and fourth developing rollers. The first process-gear train transmits a driving force from the process motor to the first and second photosensitive drums. The second process-gear train transmits the driving force from the process motor to the third and fourth photosensitive drums.
    Type: Grant
    Filed: March 11, 2021
    Date of Patent: January 18, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Hiroshi Nakano, Yusuke Ikegami, Shoichiro Nishimura
  • Patent number: 11221584
    Abstract: Provided is an image forming apparatus, having: a power source; a first coupling member configured to be rotated by a driving force transferred from the power source; and a cartridge including a second coupling member configured to rotate in a state of being adsorbed to the first coupling member, and a rotating member connected with the second coupling member, wherein the first coupling member has a first driving force transfer surface which is perpendicular to a rotation axis of the first coupling member, the second coupling member has a second driving force transfer surface which is perpendicular to a rotation axis of the second coupling member, and the driving force is transferred from the first coupling member to the second coupling member in a state where an adsorption force is generated mutually between the first driving force transfer surface and the second driving force transfer surface.
    Type: Grant
    Filed: April 11, 2018
    Date of Patent: January 11, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kojiro Yasui, Seiji Hara, Hiroki Ogino
  • Patent number: 11204584
    Abstract: An image forming apparatus cartridge includes a coupling member having an axis about which the coupling member is rotatable. The coupling member includes a first end portion operatively connected to a developer roller and a developer supplying roller and a second end portion for receiving a rotational force. The coupling member is movable between a first position in which the axis of the coupling member is substantially parallel to and offset from the axis of the developer roller, a second position in which the axis of the coupling member is inclined with respect to the position of the axis when the coupling member is in the first position, and a third position in which the axis of the coupling member is inclined with respect to the position of the axis when the coupling member is in the first position in a direction opposite to the direction the coupling member is inclined when in the second position.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: December 21, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masanari Morioka, Shigeo Miyabe, Takahito Ueno
  • Patent number: 11163263
    Abstract: An image forming apparatus cartridge includes a coupling member having an axis about which the coupling member is rotatable. The coupling member includes a first end portion operatively connected to a developer roller and a developer supplying roller and a second end portion for receiving a rotational force. The coupling member is movable between a first position in which the axis of the coupling member is substantially parallel to and offset from the axis of the developer roller, a second position in which the axis of the coupling member is inclined with respect to the position of the axis when the coupling member is in the first position, and a third position in which the axis of the coupling member is inclined with respect to the position of the axis when the coupling member is in the first position in a direction opposite to the direction the coupling member is inclined when in the second position.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: November 2, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masanari Morioka, Shigeo Miyabe, Takahito Ueno
  • Patent number: 11156244
    Abstract: An embossed component for positioning an article having a through hole includes a planar portion and an embossed portion projecting from a surface of the planar portion. The embossed portion is tapered toward a tip side and to be fitted into the through hole. The embossed portion includes a straight base end portion continuous with the planar portion and extending vertically with respect to the planar portion toward the tip side of the embossed portion, and an opening is at a tip of the embossed portion.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: October 26, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Kohei Takita, Toshikazu Hirakawa, Eiri Sagae, Satoshi Kai, Taisuke Tokuwaki, Shumpei Takahashi, Riku Maeshiro, Shinichi Tanaka
  • Patent number: 11150600
    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: February 25, 2020
    Date of Patent: October 19, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Masao Ichiyanagi, Keita Shimizu
  • Patent number: 11150579
    Abstract: A toner cartridge according to one example embodiment includes a developer roll and a toner adder roll. First and second drive gears are rotatably connected to and coaxial with the developer roll and toner adder roll, respectively. The toner cartridge includes a drive coupler exposed to receive rotational motion when the toner cartridge is installed in an image forming device. Gear teeth of the first drive gear are directly meshed with gear teeth of the drive coupler of the toner cartridge. The second drive gear is rotatably connected to the drive coupler through a pair of idler gears.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: October 19, 2021
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Jeffrey Alan Abler, Brian Lester Boettcher, Brian Lee Hawes
  • Patent number: 11143985
    Abstract: An image forming apparatus includes: a first rod movable between a first advanced position separating a first developing roller from a first photosensitive drum and a first retracted position allowing the first developing roller to contact the first photosensitive drum; a second rod movable between a second advanced position separating a second developing roller from a second photosensitive drum and a second retracted position allowing the second developing roller to contact the second photosensitive drum; a first cam shifting between a first pushing state of placing the first rod in the first advanced position and a first push-released state of allowing the first rod to be in the first retracted position; and a second cam shifting between a second pushing state of placing the second rod in the second advanced position and a second push-released state of allowing the second rod to be in the second retracted position.
    Type: Grant
    Filed: September 9, 2020
    Date of Patent: October 12, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Masahito Saeki
  • Patent number: 11137704
    Abstract: In a fixing device, a first fixing member and a second fixing member in combination forms a nip, a first gear receives a driving force from a main gear provided in an image forming apparatus, a second gear rotates together with the first gear about a center of rotation of the first gear, a third gear provided in mesh with the second gear rotates together with the first fixing member. The first gear and the second gear are rotatably supported by a metal shaft. The first fixing member and the metal shaft are supported by a side frame. A sleeve is provided around the metal shaft. A material of the second gear and a material of the sleeve have melting points higher than a melting point of a material of the first gear, and the first gear is supported via the sleeve by the metal shaft.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: October 5, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Kazuna Taguchi
  • Patent number: 11131962
    Abstract: An image forming apparatus includes a main body, and a tray movable from an inner portion of a main body to outside of the main body. A plurality of consumable cartridges are removably mountable on the tray. The tray includes a guide member, and during mounting of each of the plurality of consumable cartridges, the guide member moves each of the plurality of consumable cartridges in a direction perpendicular to a mounting direction of the consumable cartridges so that the consumable cartridges are mounted on the tray.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: September 28, 2021
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventor: Young Hoon Kim
  • Patent number: 11126109
    Abstract: A developing cartridge includes: a developing roller; a coupling for rotating the developing roller; a shaft; and a clutch. The developing roller is rotatable about a first axis extending in an axial direction. The coupling is rotatable about a second axis extending in the axial direction. The shaft rotatably supports the coupling. The clutch is rotatable together with the coupling about the shaft in a case where the coupling rotates in a first rotational direction. In a case where the coupling rotates in a second rotational direction opposite to the first rotational direction, the clutch engages with a portion of the shaft and the clutch and the coupling do not rotate.
    Type: Grant
    Filed: September 23, 2019
    Date of Patent: September 21, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Keita Shimizu
  • Patent number: 11112754
    Abstract: A gear assembly for an imaging device includes a drive gear positioned to receive rotational force from the imaging device, and a driven gear positioned to mesh with and receive rotational force from the drive gear for rotating a photoconductive member. As the photoconductive member rotates, a rotational location on the drive gear that meshes with the driven gear when a latent image is formed on the photoconductive member is the same said rotational location on the drive gear that meshes with the driven gear when a toned image of the latent image is transferred from the photoconductive member to an image receiving medium.
    Type: Grant
    Filed: June 25, 2020
    Date of Patent: September 7, 2021
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventor: Daniel Lee Carter
  • Patent number: 11112749
    Abstract: Disclosed in the present invention is a process cartridge, which is detachably mounted into an electronic imaging device, wherein the electronic imaging device comprises a separating member. The process cartridge comprises: a photosensitive drum; a developing roller; a first housing supporting the developing roller, wherein when the process cartridge is mounted into the electronic imaging device, in a direction of gravity, the photosensitive drum is located on a lower end side of the process cartridge, and an axis of the developing roller is located on an upper side of an axis of the photosensitive drum; and an integrally molded second housing. The second housing supports the photosensitive drum. A first housing is rotatable relative to the second housing. A separating force receiving component movable relative to the second housing is provided on the second housing.
    Type: Grant
    Filed: April 14, 2021
    Date of Patent: September 7, 2021
    Assignee: JIANGXI YIBO E-TECH CO. LTD.
    Inventors: Peng Jiang, Xiaobing Liu
  • Patent number: 11112747
    Abstract: A drum cartridge includes: a drum frame to which a developing cartridge including a storage medium having an electrical contact surface is detachably attachable; a photosensitive drum; a transfer roller; and a conveying roller. The drum is rotatable about a first axis extending in a first direction and positioned at one end portion of the frame in a second direction. The transfer roller is rotatable about a second axis extending in the first direction and in contact with the drum. The conveying roller is rotatable about a third axis extending in the first direction and separated from the transfer roller in the second direction. A first opening of the frame is positioned between the transfer roller and the conveying roller in the second direction. The electrical contact surface is exposed to an outside through the first opening in a case where the developing cartridge is attached to the frame.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: September 7, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Takashi Shimizu, Koji Abe
  • Patent number: 11106160
    Abstract: A drive transmission device includes a driving gear, a follower gear, an intermediary gear, an output gear, and an elastic member. Transmission of a driving force from the driving gear to the follower gear and transmission of the driving force from the intermediary gear to the output gear are disabled, in a non-transmission state. In a transmission state, (i) the follower gear is moved by an elastic force of the elastic member to enable rotation of the follower gear by the driving force from the driving gear, and thereafter, (ii) the intermediary gear is rotated by the follower gear without rotating the output gear, and thereafter, the intermediary gear is enabled to transmit the driving force to the output gear.
    Type: Grant
    Filed: July 2, 2020
    Date of Patent: August 31, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hideto Chino
  • Patent number: 11099518
    Abstract: A cartridge includes a rotatable member and a cylindrical member operatively connected to the rotatable member. The cartridge also includes a coupling member operatively connected to the cylindrical member and coaxially rotatable with the cylindrical member. The coupling member includes at least one projection for receiving a rotational force provided at one end portion of the coupling member, and a shaft portion elongated along an axis of the coupling member. The coupling member is movable with respect to the cylindrical member in a direction of the axis of the cylindrical member. The cartridge further includes a coil spring pressing the coupling member in the direction of the axis of the cylindrical member. One end portion of the coil spring encompasses a part of the shaft portion of the coupling member, with the one end portion of the coil spring and the part of the shaft portion being accommodated in a hole in the cylindrical member.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: August 24, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Noriyuki Komatsu, Shunsuke Uratani, Toru Oguma
  • Patent number: 11067936
    Abstract: A transfer belt unit includes a belt frame, a transfer belt, a storage element, an electrical contact surface, a pressing member, and a holder. The storage element stores therein information on the transfer belt. The electrical contact surface is electrically connected to the storage element. The pressing member presses the electrical contact surface in a pressing direction. The holder is positioned at the belt frame and holds the electrical contact surface. The holder is movable relative to the belt frame in a direction crossing the pressing direction.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: July 20, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Shuhei Hatano
  • Patent number: 11067950
    Abstract: In a cartridge structure employing an inclinable coupling member engaging with a rotational force transmitting portion of an electrophotographic image forming apparatus, the coupling member is unable to engage with the rotational force transmitting portion of the electrophotographic image forming apparatus when the mounting and dismounting direction and the developing/spacing direction relative to the electrophotographic image forming apparatus of different from each other. Under the circumstances, a coupling lever contacting and retracting relative to the coupling member in interrelation with the mounting and dismounting operation of a developing cartridge B1, and a coupling spring for the coupling lever to apply an urging force to the coupling member are provided.
    Type: Grant
    Filed: August 6, 2020
    Date of Patent: July 20, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yosuke Kashiide, Masaaki Sato, Hiroyuki Munetsugu
  • Patent number: 11061364
    Abstract: To develop a conventional coupling for transmitting a driving force. A coupling member is provided with a supporting portion for movable supporting a driving force receiving portion for receiving a driving force.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: July 13, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tetsuo Uesugi, Makoto Hayashida, Koji Yamaguchi, Takashi Yano
  • Patent number: 11054787
    Abstract: A drum cartridge includes: a photosensitive drum; a drum frame; a drum coupling; and an electrical contact surface. The photosensitive drum is rotatable about an axis extending in a first direction. The drum frame has one end portion in a second direction at which the photosensitive drum is positioned. The drum coupling is rotatable together with the photosensitive drum. The drum coupling is positioned at an outer surface of one side in the first direction of the drum frame. The electrical contact surface is positioned closer to another side in the second direction of the drum frame than the drum coupling is to the another side in the second direction of the drum frame.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: July 6, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Hiroki Mori, Atsushi Fukaya, Tsubasa Kiriyama, Nao Itabashi
  • Patent number: 11048203
    Abstract: A developing cartridge includes: a housing; a developing roller rotatable about an axis extending in an axial direction; a first helical gear and a second helical gear positioned at an outer surface of the housing; a cover covering part of the second helical gear; and an engaging member movable with the second helical gear. The second helical gear meshes with the first helical gear and is rotatable in first and second rotational directions. The second helical gear is movable in the axial direction between a first position and a second position farther away from the outer surface than the first position. The second helical gear rotates in the first rotational direction to move to the first position. The second helical gear rotates in the second rotational direction to move to the second position whereby the engaging member engages part of the cover to terminate rotation of the second helical gear.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: June 29, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Keita Shimizu, Tomitake Aratachi
  • Patent number: 11022921
    Abstract: An image forming apparatus includes a driven unit and a drive transmitter. The drive transmitter includes a drive source, a drive gear, and a driven gear. The drive source is configured to drive the driven unit. The drive gear is configured to receive a driving force from the drive source. The driven gear is meshed with the drive gear. The drive transmitter is configured to transmit the driving force from the drive source to the driven unit. The drive gear or the driven gear is a crowned gear crowning-processed and the crowned gear has a crowning amount less than 50 ?m.
    Type: Grant
    Filed: April 1, 2020
    Date of Patent: June 1, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yasuhiro Maehata, Hiroaki Takagi, Kenji Tomita
  • Patent number: 11016438
    Abstract: A cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The cartridge includes a rotatable member capable of carrying developer, the rotatable member being rotatable about a rotational axis thereof. The cartridge also includes a coupling member provided at one end portion of the cartridge with respect to a rotational axis direction of the rotatable member, the coupling member including at least one projection and being configured to transmit a rotational force to the rotatable member. A holding member holds the coupling member, and two pins support the holding member, with each of the two pins including a shaft portion elongated in a direction substantially perpendicular to the rotational axis of the rotatable member and the two pins being disposed substantially parallel to each other.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: May 25, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shigemi Kamoshida, Takuya Kawakami, Hiroki Ogino, Kazuhiko Kanno
  • Patent number: 11016433
    Abstract: A developing cartridge includes: a housing; a developing roller rotatable about an axis extending in an axial direction; a first helical gear and a second helical gear positioned at an outer surface of the housing; a cover covering part of the second helical gear; and an engaging member movable with the second helical gear. The second helical gear meshes with the first helical gear and is rotatable in first and second rotational directions. The second helical gear is movable in the axial direction between a first position and a second position farther away from the outer surface than the first position. The second helical gear rotates in the first rotational direction to move to the first position. The second helical gear rotates in the second rotational direction to move to the second position whereby the engaging member engages part of the cover to terminate rotation of the second helical gear.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: May 25, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Keita Shimizu, Tomitake Aratachi
  • Patent number: 10996584
    Abstract: An image forming apparatus, having a photosensitive drum assembly, an exposure head, and a bearing, is provided. The photosensitive drum assembly includes a photosensitive drum and a flange disposed at an end of the photosensitive drum in an axial direction of an axis of the photosensitive drum. The flange contacts an inner surface of the photosensitive drum. The exposure head includes a plurality of light emitters aligned along the axial direction of the photosensitive drum, a lens array focusing light from the light emitters on the photosensitive drum, and a head frame to support the light emitters and the lens array. The bearing has a first contact face to contact the exposure head to define a distance between the lens array and the photosensitive drum along a direction of an optical axis of the light.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: May 4, 2021
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Takamasa Tsukada, Junichi Yokoi
  • Patent number: 10948841
    Abstract: An image forming apparatus includes an image forming section, a driving unit and an operation unit. The image forming section includes one or more image forming units. The driving unit generates driving force. The operation unit selectively performs a first operation and a second operation. The first operation is an operation to change over from a coupled state of the one or more image forming units and the driving unit, which the driving force is transmitted to the one or more image forming units, to a released state of the one or more image forming unit and the driving unit, which the driving force from the driving unit is not transmitted to the one or more image forming units. When the second operation is performed, the released state is maintained.
    Type: Grant
    Filed: March 14, 2019
    Date of Patent: March 16, 2021
    Assignee: Oki Data Corporation
    Inventor: Kohei Otomo
  • Patent number: 10935924
    Abstract: An interface drive coupler for a replaceable unit of an electrophotographic image forming device according to one example embodiment includes a first component and a second component coaxial with the first component along a rotational axis of the interface drive coupler. A force receiving portion is positioned on the first component and a force transmitting portion is positioned on the second component. Angled grooves on one of the first and second components matably receive angled ribs on the other of the first and second components to prevent the first and second components from separating from each other.
    Type: Grant
    Filed: January 2, 2020
    Date of Patent: March 2, 2021
    Assignee: Lexmark International, Inc.
    Inventor: Brian Lee Hawes
  • Patent number: 10926562
    Abstract: Provided is a joint mechanism where a rotational drive force of a drive shaft is transmitted to a driven shaft. The joint mechanism includes a first engaging portion, a second engaging portion which is engageable with the first engaging portion, a coupling, a first distal end portion, and a second distal end portion. The coupling has the second engaging portion, and is swingable in a direction intersecting with the axial direction in a state where the second engaging portion is engaged with the first engaging portion. The first distal end portion is a distal end portion of the driven shaft, and the first engaging portion or the coupling is mounted on the first distal end portion. The second distal end portion is a distal end portion of the drive shaft, and the coupling or the first engaging portion is mounted on the second distal end portion.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: February 23, 2021
    Inventor: Daisuke Eto
  • Patent number: 10915055
    Abstract: A drum unit usable with a process cartridge includes a photosensitive drum having an axis L1; and a coupling member having an axis L2 and connected to an end portion of the photosensitive drum, the coupling member being provided with a projection extending toward an end portion of the coupling member, wherein the coupling member is movable along the axis L2 between a first position, and a second position in which the projection is closer to the photosensitive drum than in the first position, wherein the projection is provided with a force receiving portion for receiving a rotational force and an outer surface facing away from the axis L2, and wherein at least a part of the outer surface is more distant from the axis L2 as is further from the photosensitive drum in a direction of the axis L1.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: February 9, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shigemi Kamoshida, Yu Fukasawa
  • Patent number: 10901366
    Abstract: The image forming apparatus includes a cartridge and an image forming apparatus main assembly. An image forming apparatus main assembly includes a drive output member for transmitting the driving force to the cartridge. The drive output member is movable between an advanced position and a retracted position. An image forming apparatus main assembly includes an inclination imparting portion for inclining the drive output member as the drive output member moves from the advanced position to the retracted position.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: January 26, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryuta Murakami, Naoki Matsumaru, Tadashi Horikawa, Tetsuji Suzuki
  • Patent number: 10884370
    Abstract: A drum unit usable with a process cartridge includes a photosensitive drum having an axis L1; and a coupling member having an axis L2 and connected to an end portion of the photosensitive drum, the coupling member being provided with a projection extending toward an end portion of the coupling member, wherein the coupling member is movable along the axis L2 between a first position, and a second position in which the projection is closer to the photosensitive drum than in the first position, wherein the projection is provided with a force receiving portion for receiving a rotational force and an outer surface facing away from the axis L2, and wherein at least a part of the outer surface is more distant from the axis L2 as is further from the photosensitive drum in a direction of the axis L1.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: January 5, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shigemi Kamoshida, Yu Fukasawa
  • Patent number: 10862409
    Abstract: A motor device includes motors, detector in the respective motors to detect motor rotational speeds, and an output controller configured or programmed to output a single output rotational speed based on the motor rotational speeds input from the detectors. The output controller multiplies at least one of the input motor rotational speeds by a coefficient derived based on target rotational speeds of the motors to calculate a conversion value, and determines the output rotational speed.
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: December 8, 2020
    Assignee: NIDEC CORPORATION
    Inventors: Masayuki Kato, Tomotsugu Sugiyama, Guifeng Zhang, Takayuki Kinouchi
  • Patent number: 10816931
    Abstract: A developing device usable with an electrophotographic image forming apparatus, the apparatus including a driving shaft rotatable by a motor and having a rotating force applying portion, and a movable member, the developing device being mountable to the movable member, and the developing device being movable in a direction substantially perpendicular to an axial direction of the driving shaft in response to movement of the movable member in one direction with the developing device mounted to the movable member, the developing device includes i) a developing roller for developing an electrostatic latent image formed on an electrophotographic photosensitive drum, the developing roller being rotatable about an axis; and ii) a coupling member for transmitting a rotating force to the developing roller, the coupling member including, a rotating force receiving portion engageable with the rotating force applying portion to receive a rotating force from the driving shaft.
    Type: Grant
    Filed: April 10, 2020
    Date of Patent: October 27, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masanari Morioka, Shiego Miyabe, Takahito Ueno
  • Patent number: 10809659
    Abstract: A cleaning device includes a cleaning roller, a bearing member, a guiding member and an energizing member. The cleaning roller includes a second gear meshed with a first gear of an image carrier. The cleaning roller is rotationally driven in an opposite direction to the image carrier by driving force transmitted from the first gear to the second gear. The bearing member supports a core metal of the cleaning roller. The guiding member has a placement face on which the bearing member is placed. The placement face is inclined with regard to a straight line passing through a rotation center of the first gear and a rotation center of the second gear so that a distance between the straight line and the placement face becomes larger, the closer to the first gear. The energizing member energizes the bearing member so as to press the cleaning roller to the image carrier.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: October 20, 2020
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Masahiro Ueno, Hirofumi Tsuji
  • Patent number: RE49143
    Abstract: Provided is an image forming apparatus that forms an image on a recording material, the apparatus including: a first helical gear and a second helical gear that are engaged with each other; and a driving portion that applies a driving force to the first helical gear, wherein at least one of the first helical gear and the second helical gear is a helical gear in which torsional rigidity in a tooth width direction of one side end in a width direction of the gear is larger than torsional rigidity in a tooth width direction of the other side end, and wherein a twist direction of helical teeth and a rotational direction of the first helical gear due to the driving portion are set such that the other side end is engaged earlier than the one side end.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: July 19, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Rin Ishikawa, Kiyoshi Oyama