Process Cartridge Unit Patents (Class 399/111)
  • Patent number: 11366422
    Abstract: An image forming apparatus includes a housing and a first process cartridge. The first process cartridge is attachable to and detachable from the housing. The first process cartridge includes a first photosensitive drum, a first developing roller, and a developing frame. The developing frame has a toner inlet opening. The toner cartridge has a toner supply opening. The toner cartridge is positioned above the developing frame such that the toner supply opening and the toner inlet opening face with each other in upward/downward direction. In the state where the first process cartridge to which the toner cartridge is attached is attached to the housing, the toner cartridge is incapable of being detached from the first process cartridge. In a state where the first process cartridge to which the toner cartridge is attached is detached from the housing, the toner cartridge is detachable from the first process cartridge.
    Type: Grant
    Filed: November 10, 2020
    Date of Patent: June 21, 2022
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Daisuke Maeta, Shougo Sato
  • Patent number: 11360428
    Abstract: An organic photoconductor includes a cylindrical body having a surface on which an electrostatic latent image is to be formed, and an optical tag provided on an outer circumferential surface of the cylindrical body. The organic photoconductor may be included in a development cartridge for an image forming apparatus.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: June 14, 2022
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Justin Pettingill, Gabriel McDaniel, Juan Guzman
  • Patent number: 11351798
    Abstract: A printing apparatus includes a printing portion configured to perform printing on a printing surface of a medium, a transporting portion configured to transport the medium in a transport direction, a medium supporting portion located upstream of the printing portion in the transport direction, the medium supporting portion including a medium supporting surface configured to support the medium, a preprocessing portion configured to perform preprocessing on the medium supported by the medium supporting portion, and a mount portion facing the medium supporting surface, the mount portion being configured such that the preprocessing portion is detachably mounted thereto. The mount portion includes a position-setting mechanism configured to set a position of the preprocessing portion with respect to the medium supporting surface.
    Type: Grant
    Filed: March 23, 2020
    Date of Patent: June 7, 2022
    Assignee: Seiko Epson Corporation
    Inventors: Ryosuke Ban, Naoki Oki, Yuki Moriya
  • Patent number: 11347162
    Abstract: A developing cartridge may include: a casing for accommodating developer therein; a developing roller rotatable about an axis extending in a first direction and positioned at one side of the casing in a second direction; a storage medium having an electric contact surface; and a holder movable relative to the casing in the second direction with the electric contact surface between a first position and a second position, the holder having an outer surface at which the electric contact surface is positioned.
    Type: Grant
    Filed: October 9, 2020
    Date of Patent: May 31, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Nao Itabashi
  • Patent number: 11340539
    Abstract: An image forming apparatus includes a drum cartridge and a toner cartridge. The drum cartridge includes a photosensitive drum, a developing device, and a cushion member. The developing device includes a developing roller and a developing housing having a toner receiving port. The developing housing is movable with respect to the photosensitive drum. The toner cartridge includes a toner housing having a toner discharge port and a toner shutter. The toner shutter opens and closes the toner discharge port. The cushion member allows the developing housing to move with respect to the developing shutter in a state where the developing shutter is engaged with the toner cartridge.
    Type: Grant
    Filed: June 25, 2021
    Date of Patent: May 24, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Shougo Sato
  • Patent number: 11333992
    Abstract: An image forming apparatus includes a photosensitive member, a charging member for charging the photosensitive member, a cleaning member that comes into contact with the charging member and moves relative to the charging member to clean the charging member, an opening/closing member for exposing an inside of the apparatus, and a driving mechanism that moves the charging member and the cleaning member relative to each other in association with opening/closing of the opening/closing member.
    Type: Grant
    Filed: June 10, 2021
    Date of Patent: May 17, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Bunro Noguchi, Hisashi Taniguchi, Atsushi Toda, Shunsuke Matsushita
  • Patent number: 11334019
    Abstract: A first cam moves between: a first position at which the first cam causes a development frame to be located at a contact position; and a second position at which the first cam causes the development frame to be located at a separation position. A second cam moves between: a third position at which the second cam, in cooperation with the first cam, causes the development frame to be located at the contact position in a state where the first cam is located at the first position; and a fourth position at which the second cam, in cooperation with the first cam, causes the development frame to be located at the separation position in a state where the first cam is located at the second position. The first cam is located at a higher position than the second cam in a vertical direction.
    Type: Grant
    Filed: May 3, 2021
    Date of Patent: May 17, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Wataru Yamaguchi
  • Patent number: 11325800
    Abstract: An image forming apparatus includes a casing, an image forming unit movable between an accommodated position and a shifted position, an actuator, an urging member, a cam, and a contact portion. The actuator includes a pivot shaft and a protrusion protruding therefrom. The protrusion at a standby position crosses a conveyance path and is contactable with a sheet conveyed along the conveyance path. When the image forming unit is at the accommodated position, the contact portion and the cam contact each other and maintain the protrusion at the standby position against an urging force of the urging member. As the image forming unit moves from the accommodated position to the shifted position, the contact portion and the cam move away from each other such that the protrusion pivots from the standby position, by the urging force, to a retracted position at which the protrusion is retracted from the conveyance path.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: May 10, 2022
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Hirotaka Tatematsu, Tetsuya Morita, Koyo Yamamoto
  • Patent number: 11327435
    Abstract: To provide a process cartridge, a drum unit capable of receiving a driving force from the main assembly, and an image forming apparatus including the process cartridge. A cartridge is provided with a movable member having a driving force receiving portion. The movable member moves between an advanced position and a retracted position.
    Type: Grant
    Filed: January 20, 2021
    Date of Patent: May 10, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventor: Daisuke Abe
  • Patent number: 11324844
    Abstract: A UV sterilization device for a board-type kitchenware includes a base with a driving member being received therein and defining a first motor, a left work-board, a right work-board, with a receiving room being formed between the left and right work-boards for receiving the board-type kitchenware therein, and a UV sterilization module connected to the first motor, longitudinally arranged on the inside of the left and right work-boards and horizontally sliding relative to the left and right work-boards. The first motor is configured to drive the UV sterilization module to slide so as to sterilize the board-type kitchenware received in the receiving room. The present structure not only can have a good disinfection and bactericidal effect on the harmful bacteria, pathogenic bacteria and molds left on the kitchenware with a minimize disinfection time, but also can reciprocate sterilization of the board-type kitchenware to achieve all-round sterilization by simple operation.
    Type: Grant
    Filed: August 12, 2019
    Date of Patent: May 10, 2022
    Inventor: Xiaohui Li
  • Patent number: 11320781
    Abstract: A cartridge that can be inserted in an apparatus main body of an image forming apparatus by moving along an axial direction of an image bearing member includes the image bearing member, a frame configured to support the image bearing member, a storage member configured to store therein information on the cartridge, and include an electrical contact, and a first pressed section and a second pressed portion configured to be pressed by the apparatus main body. The electrical contact is disposed between the first pressed section and the second pressed section, and is configured to be in contact with the main body contact on a lower side in a state where the cartridge is attached to the apparatus main body.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: May 3, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroki Shimizu, Osamu Anan, Kazuki Matsumoto
  • Patent number: 11314201
    Abstract: A process cartridge includes a photosensitive drum; a developing roller; a developer supplying roller, provided in contact with the developing roller; a driving force receiving portion provided at a shaft end of the supplying roller; a first driving force transmitting portion; a second driving force transmitting portion; flexible sheets provided adjacent to an engaging portion between the first portion and the second portion to intermittently contact the second portion with rotation of the second portion, wherein a rotational direction of the roller is opposite to that of the roller, and a peripheral speed of the roller is larger than that of the roller.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: April 26, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideki Maeshima, Kuniaki Hirukawa, Shuichi Gofuku, Yoshihiro Mitsui
  • Patent number: 11287772
    Abstract: There are demands for stable connections of contact points between a process cartridge, including a development device, and an image forming device. A development contact point, a first contact point, and a second contact point are disposed in this order on the inside in a perpendicular direction with respect to an insertion direction in which a development device is inserted into an image forming apparatus.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: March 29, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroaki Nosho, Toru Oguma, Tetsuya Numata
  • Patent number: 11285748
    Abstract: Provided is a drive head (40), a drive assembly (20), and a process cartridge (10), wherein the drive head (40) is mounted to a gear (12), the drive head (40) comprises a shaft part (16), a claw (15), and a first elastic element (14), and the shaft part (16) is sleeved by the claw (15) which can move stretchably along the shaft part. The drive head (40), drive assembly (20), and process cartridge (10) have the advantage that the drive head (40) is hard to falling off.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: March 29, 2022
    Assignee: Zhuhai Kingly Technology Co., Ltd
    Inventor: Ping Deng
  • Patent number: 11275328
    Abstract: A developing cartridge may include: a casing for accommodating developer therein; a developing roller rotatable about an axis extending in a first direction and positioned at one side of the casing in a second direction; a storage medium having an electric contact surface; and a holder movable relative to the casing in the second direction with the electric contact surface between a first position and a second position, the holder having an outer surface at which the electric contact surface is positioned.
    Type: Grant
    Filed: October 9, 2020
    Date of Patent: March 15, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Nao Itabashi
  • Patent number: 11256209
    Abstract: An apparatus body of an image forming apparatus has a first guide portion having an inlet shape corresponding to an outer shape of an engagement portion provided in a cartridge when seen in an attachment direction of the cartridge to the apparatus body and guiding the engagement portion, a second guide portion for guiding a positioning target portion which is provided on the cartridge for positioning an attachment completion position of the cartridge with respect to the apparatus body, and a movable member being at a regulation position at which a guiding path of the positioning target portion by the second guide portion is blocked is immovable from the regulation position unless being pressed by the engagement portion.
    Type: Grant
    Filed: May 20, 2021
    Date of Patent: February 22, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takashi Kimura, Isao Koishi, Daisuke Yamamoto
  • Patent number: 11237518
    Abstract: An image forming apparatus includes a main body, a drum cartridge removably attached to the main body, and a belt unit removably attached to the main body. The main body includes a drum power supply, a belt power supply, and a controller configured to start supplying power from the drum power supply to a drum memory of the drum cartridge, start supplying power from the belt power supply to a belt memory of the belt unit, stop supplying the power from the drum power supply to the drum memory after starting supplying the power from the drum power supply to the drum memory, and stop supplying the power from the belt power supply to the belt memory after starting supplying the power from the belt power supply to the belt memory.
    Type: Grant
    Filed: August 6, 2020
    Date of Patent: February 1, 2022
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Toshinori Araki, Tatsuro Yokoi, Seiya Sato, Shinta Sugiura, Koji Akagi, Masaaki Wakizaka, Keita Inoue, Osamu Takahashi
  • Patent number: 11226585
    Abstract: A process cartridge includes a photosensitive drum; a developing roller; a developer supplying roller, provided in contact with the developing roller; a driving force receiving portion provided at a shaft end of the supplying roller; a first driving force transmitting portion; a second driving force transmitting portion; flexible sheets provided adjacent to an engaging portion between the first portion and the second portion to intermittently contact the second portion with rotation of the second portion, wherein a rotational direction of the roller is opposite to that of the roller, and a peripheral speed of the roller is larger than that of the roller.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: January 18, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideki Maeshima, Kuniaki Hirukawa, Shuichi Gofuku, Yoshihiro Mitsui
  • Patent number: 11221585
    Abstract: A drum cartridge mountable to an image forming apparatus in a mounting direction, the drum cartridge including: a frame having an opening, the frame allowing a toner cartridge to be attached, and the frame including a housing configured to accommodate therein a toner and a first storage medium including a first electric contact; a photosensitive drum; and a second storage medium including a second electric contact and located at an outer surface of the frame, and in a state where the toner cartridge is mounted to the frame, the first storage medium is exposed via the opening and the second storage medium is aligned with the first storage medium in the mounting direction of the drum cartridge.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: January 11, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Masahito Saeki
  • Patent number: 11204579
    Abstract: A drawer includes: a photosensitive drum; and a frame to which a developing cartridge is attachable. The photosensitive drum is rotatable about a rotational axis extending in an axial direction. The photosensitive drum has an outer circumferential surface. The developing cartridge includes a developing roller having an outer circumferential surface. The developing cartridge is attachable to the frame in a state where the outer circumferential surface of the developing roller faces the outer circumferential surface of the photosensitive drum. The frame is configured to move the developing roller in a separation direction in response to movement in the axial direction of at least a portion of the developing cartridge attached to the frame. The separation direction is a direction in which the outer circumferential surface of the developing roller separates from the outer circumferential surface of the photosensitive drum.
    Type: Grant
    Filed: August 21, 2020
    Date of Patent: December 21, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yuwen Wang, Junichi Hashimoto, Isao Kishi, Kazuaki Ooka
  • Patent number: 11188021
    Abstract: A cartridge including: a first unit including an image bearing member and a first portion, and configured to take a removal posture when the cartridge is to be removed from a main body; a second unit including a developer bearing member and a second portion, the second unit being movable between a first position where the developer bearing member is in contact with the image bearing member and a second position where the developer bearing member is separated from the image bearing member and where the second portion is in contact with the first portion, wherein when the first unit takes the removal posture, the second unit is located at the second position, and when the second unit is located at the second position, movement of the second unit in a direction, in which the developer bearing member is separated from the image bearing member, is restricted.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: November 30, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Toshiaki Takeuchi, Koichi Ooishi, Hiroki Shimizu
  • Patent number: 11175622
    Abstract: An image formation apparatus according to an embodiment may include: an apparatus body; an image formation unit configured to form an image; a movable unit accommodated in the apparatus body and supporting the image formation unit; a guide part configured to guide the movable unit from an inside of the apparatus body in a pull-out direction; a first rotatable member provided to the apparatus body and configured to guide the movable unit in the pull-out direction; and a second rotatable member provided to the movable unit and configured to be engaged with the guide part at a position on an upstream side of the first rotatable member in the pull-out direction. In a state where the movable unit is guided by the first rotatable member with the movable unit being moved in the pull-out direction, the second rotatable member and the guide part are disengaged from each other.
    Type: Grant
    Filed: October 15, 2020
    Date of Patent: November 16, 2021
    Assignee: Oki Electric Industry Co., Ltd.
    Inventor: Toshiyuki Totsuka
  • Patent number: 11172121
    Abstract: An image forming apparatus includes a main assembly and a cartridge attached to the main assembly in an attaching direction. The main assembly includes a movable member movable between first and second positions and having first and second engaging portions to engage with first and second protrusions on the cartridge, and an urging member urging the movable member from the second position to the first position. The first engaging portion has a surface-to-be-abutted, a first surface-to-be-supported, and a recessed surface, and the second engaging portion has a regulating surface and a second surface-to-be-supported.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: November 9, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Masato Tanabe, Kazuo Chadani, Yasunori Toriyama, Sadaaki Tani, Yuuki Nakamura
  • Patent number: 11169483
    Abstract: A process cartridge includes a photosensitive drum and a gear portion having gear teeth configured to receive a driving force from outside of the process cartridge. The gear portion includes an exposed portion exposed to outside of the process cartridge. A shortest distance from an axis of the photosensitive drum to a tooth tip of the exposed portion of the gear portion measured along a direction perpendicular to the axis of the photosensitive drum is no less than 90% and no more than 110% of a radius of the photosensitive drum.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: November 9, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryuta Murakami, Tadashi Horikawa, Shunsuke Uratani, Yuichiro Inaba
  • Patent number: 11163257
    Abstract: An image forming apparatus includes an apparatus main body; a cover member that is provided rotatable in a rotation direction about a rotation axis with respect to the apparatus main body, having an opening part, a fuser that fuses a toner image formed on each medium of media wherein the fuser is attached to the apparatus main body by being inserted through the opening part and detached from the apparatus main body by being pulled out of the opening part; and a sub cover member that has an surface portion and is attached to the fuser, wherein in a state in which the fuser is attached to the image forming apparatus, the surface portion of the sub cover is arranged within the opening part, the sub cover member moves in the rotation direction in correspondence with the rotation of the cover member.
    Type: Grant
    Filed: October 10, 2020
    Date of Patent: November 2, 2021
    Assignee: Oki Electric Industry Co., Ltd.
    Inventor: Yasumasa Sagawa
  • Patent number: 11156954
    Abstract: An image forming apparatus includes a mounting portion for mounting a process cartridge, the process cartridge including a first unit having an image bearing drum, and a second unit having a developing roller, the second unit being movable between a contact position in which the roller contacts the drum and a spaced position in which they are mutually spaced; an engageable member engageable with a force receiving portion provided on the second unit; wherein the engageable member is movable between a first position for maintaining the second unit in the spaced position by engaging with the force receiving portion, a second position for permitting movement of the second unit from the spaced position to the contact position; and a third position for permitting the process cartridge to be mounted, by being pressed by the process cartridge to retract, when the process cartridge is mounted to the mounting portion.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: October 26, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akira Yoshimura, Tomio Noguchi, Yukio Kubo, Masaaki Sato, Satoshi Nishiya, Yosuke Kashiide
  • Patent number: 11150598
    Abstract: An engaging portion 30 is provided which is engageable with a portion-to-be-engaged 11b a displaceable integrally with a developer receiving portion 11 with a mounting operation of a developer supply container 1 to displace 11 in an upward direction U to bring a receiving opening into communication with a discharge opening. An engaging portion 30 includes a first engagement surface 31a extending in the upward direction U as going toward a developer accommodating portion of the developer supply container 1, and a second engagement surface 32a provided at a position closer to the developer accommodating portion than the first engagement surface 31a. When the receiving opening in communication with a shutter opening, a height of an end of the first engagement surface 31a close to the developer accommodating portion is higher than the second engagement surface 32a.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: October 19, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiromasa Katayama, Manabu Jimba, Akihito Kamura, Katsuya Murakami
  • Patent number: 11144006
    Abstract: An image forming apparatus includes image forming stations including respective electrophotographic photosensitive drums; an image transfer belt contactable to the drums; image transfer rollers, contactable to the transfer belt to urge the belt to the drums for transferring the toner images from the drums onto the belt, the rollers being provided with respective rotational shafts about an axis of which the rollers are rotatable; and a slidable member slidable in a direction in which the stations are arranged to retract the rollers away from the corresponding drums, the slidable member being provided with inclined surfaces contactable to the shafts, the inclined surfaces being disposed at such positions that the rollers are retracted from respective drums sequentially with the movement of the slidable member in the direction.
    Type: Grant
    Filed: March 23, 2020
    Date of Patent: October 12, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomomichi Kawashima, Takayuki Miyamoto
  • Patent number: 11144007
    Abstract: A process cartridge using an image forming apparatus, including a rotatable image bearing member having a circumferential surface; a developing unit configured to supply a developing agent to the image bearing member; and a cleaning member that cleans the circumferential surface, wherein the developing agent contains a toner including toner particles and a metal soap, the image bearing member includes a plurality of grooves formed on the circumferential surface to extend in a circumferential direction of the circumferential surface and to be arranged side by side in a rotation axis direction, and the plurality of grooves and portions between the grooves form concave-convex portions on the circumferential surface. The circumferential surface of the image bearing member had surface roughness Rz of 0<Rz?0.70 ?m and average interval Sm between concave-convex portions on the circumferential surface of 0<Sm?70.0 ?m.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: October 12, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Shinichi Hagiwara, Yasukazu Ikami, Kosuke Ikada, Keitaro Nakata, Hideharu Shimozawa
  • Patent number: 11131955
    Abstract: A developer cartridge according to one aspect is attachable to a photoconductor unit that comprises a photoconductive drum. The developer cartridge may comprise a main body having an opening, the main body comprising an electric circuit, a front cover configured to move to an opening position in which the opening of the main body is exposed and to a closing position in which the opening of the main body is closed, a first terminal electrically connected to the electric circuit, a photosensitive drum, and a developer cartridge comprising a developing roller, developing frame having a pressed portion, memory unit and second terminal. The front cover may include a pressing portion configured to press the pressed portion of the developing frame in a direction from the developing roller toward the photosensitive drum, and wherein the second terminal faces to the front cover when the front cover is in the closed position.
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: September 28, 2021
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Masahiro Ishii, Fumio Morita
  • Patent number: 11131959
    Abstract: A process cartridge comprises a photosensitive drum and a developing roller. A coupling member is provided adjacent to one axial end of the developing roller. The coupling member includes a driven portion, and an intermediary portion configured and positioned to engage with the driven portion. The intermediary portion is also configured to be movable relative to the driven portion in a direction crossing the axis of the developing roller while maintaining engagement with the driven portion. The coupling member further includes a driving portion configured and positioned to receive a driving force for rotating the developing roller. The driving portion is also configured to engage with the intermediary portion, and to be movable relative to the intermediary portion in a direction crossing the axis of the developing roller while maintaining engagement with the intermediary portion.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: September 28, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuo Chadani, Tomonori Mori, Koji Hashimoto
  • Patent number: 11126138
    Abstract: An assembly for an electrophotographic image forming device includes a housing and a rotatable component. A bushing has an opening defined by an inner circumferential surface of the bushing. A shaft of the rotatable component is received in the opening such that the inner circumferential surface rotatably supports the shaft. A first mating feature is positioned on an outer surface of the bushing that is opposite the inner circumferential surface of the bushing. The first mating feature is positioned between an inner axial end of the bushing and an outer axial end of the bushing relative to a rotational axis of the rotatable component. The first mating feature of the bushing is in contact with a second mating feature on the housing. Contact between the first and second mating features defines an axial position of the bushing relative to the housing along the rotational axis of the rotatable component.
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: September 21, 2021
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Brian Lester Boettcher, Brian Lee Hawes
  • Patent number: 11119442
    Abstract: A photosensitive member unit includes a photosensitive member, a transfer roller, a mounting portion capable of mounting a development unit including a development roller, a first gear and a second gear each provided at one end of the photosensitive member in an axial direction of the photosensitive member, and a third gear provided at one end of the transfer roller in an axial direction of the photosensitive member and configured to engage with the second gear. The first gear, the second gear, and the third gear are helical gears. A direction in which helical teeth of the first gear are inclined is opposite to a direction in which helical teeth of the second gear are inclined, and the direction in which the helical teeth of the first gear are inclined matches a direction in which helical teeth of the third gear are inclined.
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: September 14, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masao Uyama, Kenji Matsuda, Ken Kikuchi
  • Patent number: 11119426
    Abstract: A developing roller includes: a magnet roller including a roll part with a magnetic pole; a cylindrical sleeve that houses the magnet roller; a first flange connected to one end of the sleeve; a second flange connected to another end of the sleeve; a conductive shaft connected to a side of the second flange of the magnet roller; a first bearing that supports the first flange so that the first flange rotates relative to the magnet roller; and second bearings that support the second flange so that the second flange rotates relative to the conductive shaft. The second bearings are conductive, and are disposed at different positions along an axial direction of the conductive shaft.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: September 14, 2021
    Assignee: Konica Minolta, Inc.
    Inventors: Junji Murakawa, Takeru Kinoshita, Hideaki Ikeda
  • Patent number: 11112731
    Abstract: A developer container includes a plurality of components combined together to form a space to store a developer. The plurality of components includes a first component and a second component. The developer container further includes a sealant to bond the first component and the second component, and a position regulator to regulate relative positions of the first component and the second component so as to maintain a distance between an adhesion portion of the first component and an adhesion portion of the second component.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: September 7, 2021
    Assignee: RICOH COMPANY, LTD.
    Inventors: Naohiro Kawashima, Yoshihiro Fujiwara, Yuki Oshikawa, Yuuki Tsuchiya, Ryusuke Mase, Tsutomu Iwata
  • Patent number: 11092927
    Abstract: A process cartridge comprises a photosensitive drum and a developing roller. A coupling member is provided adjacent to one axial end of the developing roller. The coupling member includes a driven portion, and an intermediary portion configured and positioned to engage with the driven portion. The intermediary portion is also configured to be movable relative to the driven portion in a direction crossing the axis of the developing roller while maintaining engagement with the driven portion. The coupling member further includes a driving portion configured and positioned to receive a driving force for rotating the developing roller. The driving portion is also configured to engage with the intermediary portion, and to be movable relative to the intermediary portion in a direction crossing the axis of the developing roller while maintaining engagement with the intermediary portion.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: August 17, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuo Chadani, Tomonori Mori, Koji Hashimoto
  • Patent number: 11086269
    Abstract: A process cartridge includes a photoreceptor drum that is disposed in a main body frame, and a charging roller unit that includes a charging roller disposed in parallel with an axial direction of the photoreceptor drum and is a separate body from the main body frame. The charging roller unit includes a protrusion. The main body frame includes a guide into which the protrusion is inserted in a state where the charging roller is spaced apart from the photoreceptor drum, and a positioner that is continuously formed at an end part of the guide on an opposite side to an insertion side of the protrusion and positions the charging roller at a position where the charging roller is in contact with the photoreceptor drum.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: August 10, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Yuhsuke Yoshimoto
  • Patent number: 11086268
    Abstract: A toner cartridge according to one example embodiment includes a housing having a reservoir for holding toner. A first latch-receiving shelf is positioned on a first longitudinal end of the housing and a second latch-receiving shelf is positioned on a second longitudinal end of the housing. Contact surfaces on top portions of the first and second latch-receiving shelves are positioned to contact corresponding first and second latches in an image forming device. The contact surface of the first latch-receiving shelf is positioned lower than a first rotational axis of a first drive coupler of the toner cartridge and higher than a second drive coupler of the toner cartridge. The contact surface of the second latch-receiving shelf is positioned lower than at least a portion of a first electrical contact of the toner cartridge and higher than at least a portion of a second electrical contact of the toner cartridge.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: August 10, 2021
    Assignee: Lexmark International, Inc.
    Inventors: Mark William Amann, Brian Lester Boettcher, James Anthany Carter, II
  • Patent number: 11086267
    Abstract: An image forming apparatus including a photosensitive member, a developing cartridge that has a developing member, a developing frame, an end member attached to the developing frame, and a restricting portion restricting a swing movement of the end member, and an apparatus body to which the developing cartridge is attachable. The apparatus body includes a movement unit moving the developing cartridge from a first position to a second position, a positioning portion engaging with the end member when the developing cartridge is located at the second position, and a restriction releasing portion acting on the restricting portion with a movement of the developing cartridge from the first position to the second position and releasing restriction of the swing movement of the end member, the restriction releasing portion being provided at a part of the apparatus main body excluding the movement unit.
    Type: Grant
    Filed: September 13, 2019
    Date of Patent: August 10, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masato Tanabe, Masakazu Tatsumi, Tatsuro Harada
  • Patent number: 11079716
    Abstract: An image forming apparatus includes: a housing; a cover; a developing cartridge; and a drum cartridge including a drum frame, a photosensitive drum, a pressing member configured to press the developing roller to the photosensitive drum in a state where the developing cartridge is mounted to the drum frame, and a lock lever, the drum cartridge being mountable to an inside of the housing in a state where the developing cartridge is mounted to the drum cartridge, wherein in a state where the cover moves from the closed position to the opened position, the lock lever moves from a locked position at which the developing cartridge is prevented from being demounted from the drum frame to a non-locked position at which the developing cartridge is allowed to be demountable from the drum frame.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: August 3, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Koji Abe
  • Patent number: 11079696
    Abstract: A processing device includes: a frame that supports a photosensitive drum; a bearing member that biases a charge roller in the direction to be in contact with the photosensitive drum; and a holder that is switchable between a holding state where the charge roller is separated from the photosensitive drum and a canceled state where the holding state is canceled so that the roller is brought into contact with the photosensitive drum; wherein a canceling member is provided in at least one of inside the processing-device attachment and an attachment body attached to an image forming apparatus main body at a front side to cause the holder to shift from the holding state to the canceled state. The canceling member causes the holder to shift from the holding state to the canceled state when the attachment body is attached to the image forming apparatus main body at the front side.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: August 3, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Takeshi Nishiyama
  • Patent number: 11079714
    Abstract: An image forming apparatus includes a photosensitive drum, a developing roller, a cam, a developing motor, a first transmission mechanism, and a second transmission mechanism. The cam moves the developing roller between a contacting position where the developing roller is in contact with the photosensitive drum and a separated position where the developing roller is separated from the photosensitive drum. The developing motor drives both the developing roller and the cam, and is rotatable in a normal rotating direction and a reverse rotating direction. The first transmission mechanism engages power transmission from the developing motor to the developing roller when the developing motor rotates in the normal rotating direction, and disengages the power transmission when the developing motor rotates in the reverse rotating direction. The second transmission mechanism can engage power transmission from the developing motor to the cam, irrespective of the rotating direction of the developing motor.
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: August 3, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Yusuke Ikegami, Masahito Saeki, Shintaro Sakaguchi, Toshiyuki Sano
  • Patent number: 11061361
    Abstract: An image forming apparatus includes an apparatus main body, a process cartridge, a scanner unit, and a toner cartridge. The process cartridge is detachably mounted on the apparatus main body. The process cartridge includes: a photosensitive drum configured to rotate about a rotational axis extending in a first direction; and a development unit configured to supply toner to the photosensitive drum. The toner cartridge is configured to store toner. At least part of the photosensitive drum, at least part of the scanner unit, and at least part of the toner cartridge are aligned in a second direction in this order. The second direction is perpendicular to both the first direction and to a vertical direction. The at least part of the photosensitive drum, the at least part of the scanner unit, and the at least part of the toner cartridge overlap one another as viewed from the second direction.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: July 13, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Shougo Sato
  • Patent number: 11061357
    Abstract: An image forming apparatus, having a casing, a cover, a first motor, a photosensitive drum, a second motor, a developing motor, a clutch, a contact/separation cam, a switching cam, and a controller, is provided. The controller conducts a first process, in which, when the cover is moved from an open position to a closed position, the controller drives the first motor to rotate the photosensitive drum without causing rotation of the developing roller; and a second process, in which, after a lapse of a first period since the controller started driving the first motor, the controller drives the second motor to move the contact/separation cam from the first phase to the second phase and move the switching cam from the first phase to the second phase causing the developing roller to be moved from the contacting position to the separated position while the photosensitive drum is rotating.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: July 13, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Kazuaki Ooka, Keigo Nakajima, Masahito Saeki
  • Patent number: 11048199
    Abstract: An image forming apparatus includes an image forming section a casing, and an open-close section. The image forming section forms an image on a sheet. The casing internally houses the image forming section. The casing includes a first opening formed in a front surface of the casing and a second opening formed in an upper surface of the casing. The open-close section includes a first cover, a second cover, and an interlocking section. The first cover includes a first cover main body that opens and closes the first opening. The second cover includes a second cover main body that opens and closes the second opening. The interlocking section opens the second cover main body as the first cover main body is opened.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: June 29, 2021
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Tomoo Miyagawa
  • Patent number: 11048207
    Abstract: An apparatus body of an image forming apparatus has a first guide portion having an inlet shape corresponding to an outer shape of an engagement portion provided in a cartridge when seen in an attachment direction of the cartridge to the apparatus body and guiding the engagement portion, a second guide portion for guiding a positioning target portion which is provided on the cartridge for positioning an attachment completion position of the cartridge with respect to the apparatus body, and a movable member being at a regulation position at which a guiding path of the positioning target portion by the second guide portion is blocked is immovable from the regulation position unless being pressed by the engagement portion.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: June 29, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takashi Kimura, Isao Koishi, Daisuke Yamamoto
  • Patent number: 11036153
    Abstract: A toner set includes a color toner and a transparent toner that has a pressure phase transition property. The color toner and the transparent toner satisfy 1.0?tan ?1?4.0 and 1.2?tan ?1/tan ?2?3.0 where tan ?1 represents tan ? of the color toner at 100° C., and tan ?2 represents tan ? of the transparent toner at 100° C.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: June 15, 2021
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Takahiro Ishizuka, Yasunobu Kashima, Hajime Sugahara, Susumu Yoshino
  • Patent number: 11029638
    Abstract: An image forming apparatus includes: a drawer movable between an inside position and an outside position; a drum cartridge including a photoconductive drum rotatable about a first axis; and a developing cartridge including a developing roller rotatable about a second axis. The drum cartridge includes a first developing-roller guide pivotable between a first position where the first developing-roller guide guides the developing roller when the developing cartridge is mounted on the drawer with the drum cartridge being mounted on the drawer, and a second position where the first developing-roller guide guides the developing roller with the drum cartridge and the developing cartridge being mounted on the drawer. The second axis is located below the first axis in a state in which the drum cartridge and the developing cartridge are mounted on the drawer, and the first developing-roller guide is located at the second position.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: June 8, 2021
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Shougo Sato
  • Patent number: 11022926
    Abstract: An image forming unit insertable into an image forming apparatus includes a photosensitive drum and a drum case supporting the photosensitive drum. The drum case includes a guide configured to (i) at least partially engage with a solid head of the image forming apparatus when inserted into the image forming apparatus along a first direction and (ii) guide the solid head in a second direction orthogonal to the first direction when the solid head is selectively repositioned along the second direction toward the photosensitive drum.
    Type: Grant
    Filed: February 7, 2020
    Date of Patent: June 1, 2021
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Takahiro Kojima, Toshihiro Matsushima
  • Patent number: 11022932
    Abstract: An image forming apparatus includes a first developing cartridge including a first developing roller and a first projection, the first developing cartridge being detachably mounted to a first mounting portion of a frame such that the first developing cartridge is movable relative to the frame between a position where the first developing roller contacts a first photosensitive drum and the first projection is located in a first lower position and a position where the first projection is located in a first upper position above the first lower position. The apparatus also includes a first contacting member contactable with the first projection. The force applying portion is configured to apply a force to the first developing cartridge such that the first projection being held in the first upper position by the first contacting portion is moved to the first lower position.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: June 1, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventor: Ken Kikuchi