Patents by Inventor Takahito Ueno
Takahito Ueno has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230305486Abstract: An electrophotographic image forming apparatus comprises a main assembly that includes moving force applying portion, a main assembly engaging portion having a driving shaft and a rotational force applying portion provided on the driving shaft, and an electrophotographic photosensitive drum. A cartridge is dismountable from the main assembly without dismounting the electrophotographic photosensitive drum from the main assembly. The cartridge includes a developing roller for developing a latent image formed on the electrophotographic photosensitive drum, a rotatable member for transmitting a rotational force to the developing roller, and a coupling member including a rotational force receiving portion engageable with the rotational force applying portion to receive a rotational force from the main assembly engaging portion, and a rotational force transmitting portion for transmitting the rotational force to the rotatable member.Type: ApplicationFiled: May 1, 2023Publication date: September 28, 2023Inventors: Masanari Morioka, Shigeo Miyabe, Takahito Ueno
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Publication number: 20230297023Abstract: A cartridge includes a photosensitive drum rotatable about an axis thereof and a drum flange provided at one end portion of the photosensitive drum. The cartridge also includes a coupling member operatively connected to the drum flange, with the coupling member being configured to transmit a driving force to the drum flange. The coupling member includes at least one projection for receiving the driving force, with the at least one projection being movable with the coupling member in the direction of the axis of the photosensitive drum. A spring is provided to urge the coupling member along the axis of the photosensitive drum. At least a part of the spring and at least a part of the coupling member are positioned within a hollow interior portion of the drum flange.Type: ApplicationFiled: May 24, 2023Publication date: September 21, 2023Inventors: Takahito Ueno, Shigeo Miyabe, Masanari Morioka, Masato Hisano
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Patent number: 11720054Abstract: A process cartridge for use with a main assembly of an electrophotographic image forming apparatus, the main assembly including a driving shaft, to be driven by a motor, having a rotational force applying portion, wherein the process cartridge is dismountable from the main assembly in a direction substantially perpendicular to an axial direction of the driving shaft, the process cartridge includes i) an electrophotographic photosensitive drum having a photosensitive layer at a peripheral surface thereof, the electrophotographic photosensitive drum being rotatable about an axis thereof; ii) process means actable on the electrophotographic photosensitive drum; iii) a coupling member engageable with the rotational force applying portion to receive a rotational force for rotating the electrophotographic photosensitive drum, the coupling member being capable of taking a rotational force transmitting angular position for transmitting the rotational force for rotating the electrophotographic photosensitive drum to tType: GrantFiled: November 17, 2021Date of Patent: August 8, 2023Assignee: Canon Kabushiki KaishaInventors: Takahito Ueno, Shigeo Miyabe, Masanari Morioka, Masato Hisano
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Patent number: 11675308Abstract: A cartridge for an electrophotographic image forming apparatus includes a developing roller, a rotatable member for transmitting a rotational force to the developing roller, a coupling member, and a frame. The coupling member is capable of moving between a first coupling member position in which the coupling axis is substantially coaxial with the rotational axis of the rotatable member and a second coupling member position in which the coupling axis is not coaxial with the rotational axis of the rotatable member. When the frame is in a first frame position, the coupling member is in the first coupling member position and a rotational force receiving portion of the coupling member engages with a rotational force applying portion of the apparatus, and, when the frame is in the second frame position, the coupling member is in the second coupling member position and the rotational force receiving portion engages with the rotational force applying portion.Type: GrantFiled: June 22, 2021Date of Patent: June 13, 2023Assignee: Canon Kabushiki KaishaInventors: Masanari Morioka, Shigeo Miyabe, Takahito Ueno
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Patent number: 11619908Abstract: A cartridge includes a frame and a photosensitive drum rotatably supported by the frame. An opening is provided in the cartridge, with toner removed from the photosensitive drum being discharged to outside of the cartridge through the opening. A discharging passageway is provided in fluid communication with the opening and through which toner can move to the opening. A coupling member is provided inside the discharging passageway, with the coupling member including a projection at an end of the coupling member, and the coupling member being movable along the discharging passageway between a first position and a second position.Type: GrantFiled: April 12, 2022Date of Patent: April 4, 2023Assignee: Canon Kabushiki KaishaInventors: Akinobu Hirayama, Takahito Ueno, Toshiaki Takeuchi
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Patent number: 11579564Abstract: A cartridge includes a frame and a photosensitive drum rotatably supported by the frame. An opening is provided in the cartridge, with toner removed from the photosensitive drum being discharged to outside of the cartridge through the opening. A discharging passageway is provided in fluid communication with the opening and through which toner can move to the opening. A coupling member is provided inside the discharging passageway, with the coupling member including a projection at an end of the coupling member, and the coupling member being movable along the discharging passageway between a first position and a second position.Type: GrantFiled: April 12, 2022Date of Patent: February 14, 2023Assignee: Canon Kabushiki KaishaInventors: Akinobu Hirayama, Takahito Ueno, Toshiaki Takeuchi
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Patent number: 11500327Abstract: A cartridge includes a frame and a developing roller for developing a latent image on the electrophotographic photosensitive drum. The cartridge also includes a coupling member having a rotational force receiving portion to receive a rotational force to be transmitted to the developing roller. First and second force receiving portions are provided on the frame. The coupling member is movable relative to the roller axis between a first position in which the coupling axis is substantially parallel to the roller axis and a second position different from the first position.Type: GrantFiled: June 8, 2021Date of Patent: November 15, 2022Assignee: Canon Kabushiki KaishaInventors: Shigeo Miyabe, Takahito Ueno, Masanari Morioka
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Publication number: 20220236691Abstract: A cartridge includes a frame and a photosensitive drum rotatably supported by the frame. An opening is provided in the cartridge, with toner removed from the photosensitive drum being discharged to outside of the cartridge through the opening. A discharging passageway is provided in fluid communication with the opening and through which toner can move to the opening. A coupling member is provided inside the discharging passageway, with the coupling member including a projection at an end of the coupling member, and the coupling member being movable along the discharging passageway between a first position and a second position.Type: ApplicationFiled: April 12, 2022Publication date: July 28, 2022Inventors: Akinobu Hirayama, Takahito Ueno, Toshiaki Takeuchi
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Patent number: 11353821Abstract: A cartridge includes a photosensitive drum and a discharge opening for permitting discharge of toner removed from the photosensitive drum to outside of the cartridge. The cartridge also includes a coupling member provided adjacent to the discharge opening and configured to output a rotational force, with the coupling member being movable relative to the photosensitive drum between (i) a first position and (ii) a second position retracted from the first position.Type: GrantFiled: October 28, 2020Date of Patent: June 7, 2022Assignee: Canon Kabushiki KaishaInventors: Akinobu Hirayama, Takahito Ueno, Toshiaki Takeuchi
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Patent number: 11320780Abstract: A cartridge includes a photosensitive drum and a discharge opening for permitting discharge of toner removed from the photosensitive drum to outside of the cartridge. The cartridge also includes a coupling member provided adjacent to the discharge opening and configured to output a rotational force, with the coupling member being movable relative to the photosensitive drum between (i) a first position and (ii) a second position retracted from the first position.Type: GrantFiled: October 28, 2020Date of Patent: May 3, 2022Assignee: Canon Kabushiki KaishaInventors: Akinobu Hirayama, Takahito Ueno, Toshiaki Takeuchi
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Publication number: 20220075314Abstract: A process cartridge for use with a main assembly of an electrophotographic image forming apparatus, the main assembly including a driving shaft, to be driven by a motor, having a rotational force applying portion, wherein the process cartridge is dismountable from the main assembly in a direction substantially perpendicular to an axial direction of the driving shaft, the process cartridge includes i) an electrophotographic photosensitive drum having a photosensitive layer at a peripheral surface thereof, the electrophotographic photosensitive drum being rotatable about an axis thereof; ii) process means actable on the electrophotographic photosensitive drum; iii) a coupling member engageable with the rotational force applying portion to receive a rotational force for rotating the electrophotographic photosensitive drum, the coupling member being capable of taking a rotational force transmitting angular position for transmitting the rotational force for rotating the electrophotographic photosensitive drum to tType: ApplicationFiled: November 17, 2021Publication date: March 10, 2022Inventors: Takahito Ueno, Shigeo Miyabe, Masanari Morioka, Masato Hisano
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Patent number: 11237517Abstract: 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: GrantFiled: November 25, 2020Date of Patent: February 1, 2022Assignee: Canon Kabushiki KaishaInventors: Takahito Ueno, Shigeo Miyabe, Masanari Morioka, Masato Hisano
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Patent number: 11209772Abstract: A cartridge includes a developing roller and a coupling member for receiving a rotational force for rotating the developing roller. The cartridge also includes a frame having a bearing configured to rotatably support the cylinder and a regulating wall capable of regulating movement of the coupling member by contacting the coupling member. A spring presses the coupling member to contact the regulating wall, and the bearing encompasses the regulating wall as seen along a rotational axis of the cylinder.Type: GrantFiled: December 10, 2020Date of Patent: December 28, 2021Assignee: Canon Kabushiki KaishaInventors: Shigeo Miyabe, Takahito Ueno, Atsushi Takasaka
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Patent number: 11204584Abstract: 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: GrantFiled: August 19, 2020Date of Patent: December 21, 2021Assignee: Canon Kabushiki KaishaInventors: Masanari Morioka, Shigeo Miyabe, Takahito Ueno
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Patent number: 11204582Abstract: A cartridge detachably mountable to a main assembly of an image forming apparatus includes a photosensitive drum; a discharging path for permitting movement of a developer removed from the drum, the discharging path including a developer discharge opening and a movable portion through which the developer is movable and which is movable between a retracted position in an upstream side with respect to a developer moving direction through the discharge opening and a advanced position in a downstream side with respect to the developer moving direction; and a sealing portion for closing the discharging path by contacting the movable portion at a position different from that of the discharge opening.Type: GrantFiled: July 1, 2020Date of Patent: December 21, 2021Assignee: Canon Kabushiki KaishaInventors: Akinobu Hirayama, Takahito Ueno, Toshiaki Takeuchi
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Patent number: 11163263Abstract: 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: GrantFiled: August 19, 2020Date of Patent: November 2, 2021Assignee: Canon Kabushiki KaishaInventors: Masanari Morioka, Shigeo Miyabe, Takahito Ueno
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Patent number: 11156956Abstract: A device for transmitting a rotational force to an electrophotographic photosensitive drum includes a flange connectable to the photosensitive drum and having a rotational axis, a hollow portion, and a force receiving surface, a pin configured to transmit the rotational force to the flange, and a coupling member the coupling member including a shaft shaped portion extended along a rotational axis of the coupling member and including a through-hole portion. When the pin and at least a part of the shaft shaped portion of the coupling member are accommodated in the hollow portion of the flange and the pin contacts the force receiving surface, the pin is capable of transmitting the rotational force received from the coupling member to the flange.Type: GrantFiled: October 22, 2020Date of Patent: October 26, 2021Assignee: Canon Kabushiki KaishaInventors: Takahito Ueno, Shigeo Miyabe, Masanari Morioka, Masato Hisano
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Publication number: 20210311432Abstract: A cartridge for an electrophotographic image forming apparatus includes a developing roller, a rotatable member for transmitting a rotational force to the developing roller, a coupling member, and a frame. The coupling member is capable of moving between a first coupling member position in which the coupling axis is substantially coaxial with the rotational axis of the rotatable member and a second coupling member position in which the coupling axis is not coaxial with the rotational axis of the rotatable member. When the frame is in a first frame position, the coupling member is in the first coupling member position and a rotational force receiving portion of the coupling member engages with a rotational force applying portion of the apparatus, and, when the frame is in the second frame position, the coupling member is in the second coupling member position and the rotational force receiving portion engages with the rotational force applying portion.Type: ApplicationFiled: June 22, 2021Publication date: October 7, 2021Inventors: Masanari Morioka, Shigeo Miyabe, Takahito Ueno
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Publication number: 20210294241Abstract: A cartridge includes a frame and a developing roller for developing a latent image on the electrophotographic photosensitive drum. The cartridge also includes a coupling member having a rotational force receiving portion to receive a rotational force to be transmitted to the developing roller. First and second force receiving portions are provided on the frame. The coupling member is movable relative to the roller axis between a first position in which the coupling axis is substantially parallel to the roller axis and a second position different from the first position.Type: ApplicationFiled: June 8, 2021Publication date: September 23, 2021Inventors: Shigeo Miyabe, Takahito Ueno, Masanari Morioka
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Patent number: 11067949Abstract: A cartridge for use with a main assembly of an electrophotographic image forming apparatus, the main assembly including a driving shaft having a rotational force applying portion, wherein the cartridge is dismountable from the main assembly in a direction substantially perpendicular to an axial direction of the driving shaft, the cartridge including i) a developing roller for developing an electrostatic latent image formed on an electrophotographic photosensitive drum, the developing roller being rotatable about an axis thereof; and ii) a coupling member engageable with the rotational force applying portion to receive a rotational force for rotating the developing roller, the coupling member being capable of taking a rotational force transmitting angular position for transmitting the rotational force for rotating the developing roller to the developing roller and a disengaging angular position in which the coupling member is inclined away from the rotational force transmitting angular position, wherein when tType: GrantFiled: November 13, 2018Date of Patent: July 20, 2021Assignee: Canon Kabushiki KaishaInventors: Shigeo Miyabe, Takahito Ueno, Masanari Morioka