Patents by Inventor Atsushi Numagami
Atsushi Numagami 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).
-
Publication number: 20240427282Abstract: A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The cartridge includes an electrophotographic photosensitive drum, a developing roller, a drum unit containing the drum, a developing unit containing the roller and being movable so the roller contacts and is spaced from the drum, and a first force receiver receiving a force from a main-assembly first force applier by movement of a door from open to closed positions when mounting the cartridge and a second force receiver movable from a stand-by position by movement of the first force receiver by a force received from the first force applier. The second force receiver takes a projected position receiving a force from the second force applier to move the developing unit so the roller moves out of contact with the drum, the projected position being higher than the stand-by position.Type: ApplicationFiled: August 29, 2024Publication date: December 26, 2024Inventors: Akira Yoshimura, Kazunari Murayama, Susumu Nittani, Atsushi Numagami
-
Patent number: 12105466Abstract: A cartridge includes a photosensitive drum and a developing roller configured to develop an electrostatic latent image formed on the photosensitive drum. A first frame rotatably supports the photosensitive drum and a second frame rotatably supports the developing roller. A movable member is movable with respect to the second frame, with the movable member including a first force receiving surface and a second force receiving surface. The second frame is movable relative to the first frame between a contact position in which the developing roller is in contact with the photosensitive drum and a spaced position in which the developing roller is spaced from the photosensitive drum. The second force receiving surface is capable of being moved by the first force receiving surface between a first position and a second position, and the second frame is capable of being moved by the second force receiving surface from the contact position toward the spaced position.Type: GrantFiled: November 10, 2023Date of Patent: October 1, 2024Assignee: Canon Kabushiki KaishaInventors: Akira Yoshimura, Kazunari Murayama, Susumu Nittani, Atsushi Numagami
-
Publication number: 20240077832Abstract: A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The cartridge includes an electrophotographic photosensitive drum, a developing roller, a drum unit containing the drum, a developing unit containing the roller and being movable so the roller contacts and is spaced from the drum, and a first force receiver receiving a force from a main-assembly first force applier by movement of a door from open to closed positions when mounting the cartridge and a second force receiver movable from a stand-by position by movement of the first force receiver by a force received from the first force applier. The second force receiver takes a projected position receiving a force from the second force applier to move the developing unit so the roller moves out of contact with the drum, the projected position being higher than the stand-by position.Type: ApplicationFiled: November 10, 2023Publication date: March 7, 2024Inventors: Akira Yoshimura, Kazunari Murayama, Susumu Nittani, Atsushi Numagami
-
Patent number: 11841673Abstract: A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The cartridge includes an electrophotographic photosensitive drum, a developing roller, a drum unit containing the drum, a developing unit containing the roller and being movable so the roller contacts and is spaced from the drum, and a first force receiver receiving a force from a main-assembly first force applier by movement of a door from open to closed positions when mounting the cartridge and a second force receiver movable from a stand-by position by movement of the first force receiver by a force received from the first force applier. The second force receiver takes a projected position receiving a force from the second force applier to move the developing unit so the roller moves out of contact with the drum, the projected position being higher than the stand-by position.Type: GrantFiled: December 12, 2022Date of Patent: December 12, 2023Assignee: Canon Kabushiki KaishaInventors: Akira Yoshimura, Kazunari Murayama, Susumu Nittani, Atsushi Numagami
-
Publication number: 20230110629Abstract: A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The cartridge includes an electrophotographic photosensitive drum, a developing roller, a drum unit containing the drum, a developing unit containing the roller and being movable so the roller contacts and is spaced from the drum, and a first force receiver receiving a force from a main-assembly first force applier by movement of a door from open to closed positions when mounting the cartridge and a second force receiver movable from a stand-by position by movement of the first force receiver by a force received from the first force applier. The second force receiver takes a projected position receiving a force from the second force applier to move the developing unit so the roller moves out of contact with the drum, the projected position being higher than the stand-by position.Type: ApplicationFiled: December 12, 2022Publication date: April 13, 2023Inventors: Akira Yoshimura, Kazunari Murayama, Susumu Nittani, Atsushi Numagami
-
Patent number: 11579563Abstract: A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The cartridge includes an electrophotographic photosensitive drum, a developing roller, a drum unit containing the drum, a developing unit containing the roller and being movable so the roller contacts and is spaced from the drum, and a first force receiver receiving a force from a main-assembly first force applier by movement of a door from open to closed positions when mounting the cartridge and a second force receiver movable from a stand-by position by movement of the first force receiver by a force received from the first force applier. The second force receiver takes a projected position receiving a force from the second force applier to move the developing unit so the roller moves out of contact with the drum, the projected position being higher than the stand-by position.Type: GrantFiled: October 18, 2021Date of Patent: February 14, 2023Assignee: Canon Kabushiki KaishaInventors: Akira Yoshimura, Kazunari Murayama, Susumu Nittani, Atsushi Numagami
-
Patent number: 11460802Abstract: A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The cartridge includes an electrophotographic photosensitive drum, a developing roller, a drum unit containing the drum, a developing unit containing the roller and being movable so the roller contacts and is spaced from the drum, and a first force receiver receiving a force from a main-assembly first force applier by movement of a door from open to closed positions when mounting the cartridge and a second force receiver movable from a stand-by position by movement of the first force receiver by a force received from the first force applier. The second force receiver takes a projected position receiving a force from the second force applier to move the developing unit so the roller moves out of contact with the drum, the projected position being higher than the stand-by position.Type: GrantFiled: March 2, 2021Date of Patent: October 4, 2022Assignee: Canon Kabushiki KaishaInventors: Akira Yoshimura, Kazunari Murayama, Susumu Nittani, Atsushi Numagami
-
Publication number: 20220035308Abstract: A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The cartridge includes an electrophotographic photosensitive drum, a developing roller, a drum unit containing the drum, a developing unit containing the roller and being movable so the roller contacts and is spaced from the drum, and a first force receiver receiving a force from a main-assembly first force applier by movement of a door from open to closed positions when mounting the cartridge and a second force receiver movable from a stand-by position by movement of the first force receiver by a force received from the first force applier. The second force receiver takes a projected position receiving a force from the second force applier to move the developing unit so the roller moves out of contact with the drum, the projected position being higher than the stand-by position.Type: ApplicationFiled: October 18, 2021Publication date: February 3, 2022Inventors: Akira Yoshimura, Kazunari Murayama, Susumu Nittani, Atsushi Numagami
-
Patent number: 11215949Abstract: A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The cartridge includes an electrophotographic photosensitive drum, a developing roller, a drum unit containing the drum, a developing unit containing the roller and being movable so the roller contacts and is spaced from the drum, and a first force receiver receiving a force from a main-assembly first force applier by movement of a door from open to closed positions when mounting the cartridge and a second force receiver movable from a stand-by position by movement of the first force receiver by a force received from the first force applier. The second force receiver takes a projected position receiving a force from the second force applier to move the developing unit so the roller moves out of contact with the drum, the projected position being higher than the stand-by position.Type: GrantFiled: July 23, 2020Date of Patent: January 4, 2022Assignee: Canon Kabushiki KaishaInventors: Akira Yoshimura, Kazunari Murayama, Susumu Nittani, Atsushi Numagami
-
Patent number: 11181860Abstract: A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The cartridge includes an electrophotographic photosensitive drum, a developing roller, a drum unit containing the drum, a developing unit containing the roller and being movable so the roller contacts and is spaced from the drum, and a first force receiver receiving a force from a main-assembly first force applier by movement of a door from open to closed positions when mounting the cartridge and a second force receiver movable from a stand-by position by movement of the first force receiver by a force received from the first force applier. The second force receiver takes a projected position receiving a force from the second force applier to move the developing unit so the roller moves out of contact with the drum, the projected position being higher than the stand-by position.Type: GrantFiled: July 23, 2020Date of Patent: November 23, 2021Assignee: Canon Kabushiki KaishaInventors: Akira Yoshimura, Kazunari Murayama, Susumu Nittani, Atsushi Numagami
-
Publication number: 20210181671Abstract: A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The cartridge includes an electrophotographic photosensitive drum, a developing roller, a drum unit containing the drum, a developing unit containing the roller and being movable so the roller contacts and is spaced from the drum, and a first force receiver receiving a force from a main-assembly first force applier by movement of a door from open to closed positions when mounting the cartridge and a second force receiver movable from a stand-by position by movement of the first force receiver by a force received from the first force applier. The second force receiver takes a projected position receiving a force from the second force applier to move the developing unit so the roller moves out of contact with the drum, the projected position being higher than the stand-by position.Type: ApplicationFiled: March 2, 2021Publication date: June 17, 2021Inventors: Akira Yoshimura, Kazunari Murayama, Susumu Nittani, Atsushi Numagami
-
Patent number: 10976696Abstract: A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The cartridge includes an electrophotographic photosensitive drum, a developing roller, a drum unit containing the drum, a developing unit containing the roller and being movable so the roller contacts and is spaced from the drum, and a first force receiver receiving a force from a main-assembly first force applier by movement of a door from open to closed positions when mounting the cartridge and a second force receiver movable from a stand-by position by movement of the first force receiver by a force received from the first force applier. The second force receiver takes a projected position receiving a force from the second force applier to move the developing unit so the roller moves out of contact with the drum, the projected position being higher than the stand-by position.Type: GrantFiled: March 31, 2020Date of Patent: April 13, 2021Assignee: Canon Kabushiki KaishaInventors: Akira Yoshimura, Kazunari Murayama, Susumu Nittani, Atsushi Numagami
-
Publication number: 20200356046Abstract: A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The cartridge includes an electrophotographic photosensitive drum, a developing roller, a drum unit containing the drum, a developing unit containing the roller and being movable so the roller contacts and is spaced from the drum, and a first force receiver receiving a force from a main-assembly first force applier by movement of a door from open to closed positions when mounting the cartridge and a second force receiver movable from a stand-by position by movement of the first force receiver by a force received from the first force applier. The second force receiver takes a projected position receiving a force from the second force applier to move the developing unit so the roller moves out of contact with the drum, the projected position being higher than the stand-by position.Type: ApplicationFiled: July 23, 2020Publication date: November 12, 2020Inventors: Akira Yoshimura, Kazunari Murayama, Susumu Nittani, Atsushi Numagami
-
Patent number: 10761478Abstract: A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The cartridge includes an electrophotographic photosensitive drum, a developing roller, a drum unit containing the drum, a developing unit containing the roller and being movable so the roller contacts and is spaced from the drum, and a first force receiver receiving a force from a main-assembly first force applier by movement of a door from open to closed positions when mounting the cartridge and a second force receiver movable from a stand-by position by movement of the first force receiver by a force received from the first force applier. The second force receiver takes a projected position receiving a force from the second force applier to move the developing unit so the roller moves out of contact with the drum, the projected position being higher than the stand-by position.Type: GrantFiled: September 25, 2019Date of Patent: September 1, 2020Assignee: Canon Kabushiki KaishaInventors: Akira Yoshimura, Kazunari Murayama, Susumu Nittani, Atsushi Numagami
-
Publication number: 20200233374Abstract: A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The cartridge includes an electrophotographic photosensitive drum, a developing roller, a drum unit containing the drum, a developing unit containing the roller and being movable so the roller contacts and is spaced from the drum, and a first force receiver receiving a force from a main-assembly first force applier by movement of a door from open to closed positions when mounting the cartridge and a second force receiver movable from a stand-by position by movement of the first force receiver by a force received from the first force applier. The second force receiver takes a projected position receiving a force from the second force applier to move the developing unit so the roller moves out of contact with the drum, the projected position being higher than the stand-by position.Type: ApplicationFiled: March 31, 2020Publication date: July 23, 2020Inventors: Akira Yoshimura, Kazunari Murayama, Susumu Nittani, Atsushi Numagami
-
Patent number: 10642218Abstract: A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The cartridge includes an electrophotographic photosensitive drum, a developing roller, a drum unit containing the drum, a developing unit containing the roller and being movable so the roller contacts and is spaced from the drum, and a first force receiver receiving a force from a main-assembly first force applier by movement of a door from open to closed positions when mounting the cartridge and a second force receiver movable from a stand-by position by movement of the first force receiver by a force received from the first force applier. The second force receiver takes a projected position receiving a force from the second force applier to move the developing unit so the roller moves out of contact with the drum, the projected position being higher than the stand-by position.Type: GrantFiled: October 15, 2018Date of Patent: May 5, 2020Assignee: Canon Kabushiki KaishaInventors: Akira Yoshimura, Kazunari Murayama, Susumu Nittani, Atsushi Numagami
-
Patent number: 10571854Abstract: A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The cartridge includes an electrophotographic photosensitive drum, a developing roller, a drum unit containing the drum, a developing unit containing the roller and being movable so the roller contacts and is spaced from the drum, and a first force receiver receiving a force from a main-assembly first force applier by movement of a door from open to closed positions when mounting the cartridge and a second force receiver movable from a stand-by position by movement of the first force receiver by a force received from the first force applier. The second force receiver takes a projected position receiving a force from the second force applier to move the developing unit so the roller moves out of contact with the drum, the projected position being higher than the stand-by position.Type: GrantFiled: October 15, 2018Date of Patent: February 25, 2020Assignee: Canon Kabushiki KaishaInventors: Akira Yoshimura, Kazunari Murayama, Susumu Nittani, Atsushi Numagami
-
Publication number: 20200019114Abstract: A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The cartridge includes an electrophotographic photosensitive drum, a developing roller, a drum unit containing the drum, a developing unit containing the roller and being movable so the roller contacts and is spaced from the drum, and a first force receiver receiving a force from a main-assembly first force applier by movement of a door from open to closed positions when mounting the cartridge and a second force receiver movable from a stand-by position by movement of the first force receiver by a force received from the first force applier. The second force receiver takes a projected position receiving a force from the second force applier to move the developing unit so the roller moves out of contact with the drum, the projected position being higher than the stand-by position.Type: ApplicationFiled: September 25, 2019Publication date: January 16, 2020Inventors: Akira Yoshimura, Kazunari Murayama, Susumu Nittani, Atsushi Numagami
-
Patent number: 10234820Abstract: A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The cartridge includes an electrophotographic photosensitive drum, a developing roller, a drum unit containing the drum, a developing unit containing the roller and being movable so the roller contacts and is spaced from the drum, and a first force receiver receiving a force from a main-assembly first force applier by movement of a door from open to closed positions when mounting the cartridge and a second force receiver movable from a stand-by position by movement of the first force receiver by a force received from the first force applier. The second force receiver takes a projected position receiving a force from the second force applier to move the developing unit so the roller moves out of contact with the drum, the projected position being higher than the stand-by position.Type: GrantFiled: May 8, 2018Date of Patent: March 19, 2019Assignee: Canon Kabushiki KaishaInventors: Akira Yoshimura, Kazunari Murayama, Susumu Nittani, Atsushi Numagami
-
Publication number: 20190049895Abstract: A process cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The cartridge includes an electrophotographic photosensitive drum, a developing roller, a drum unit containing the drum, a developing unit containing the roller and being movable so the roller contacts and is spaced from the drum, and a first force receiver receiving a force from a main-assembly first force applier by movement of a door from open to closed positions when mounting the cartridge and a second force receiver movable from a stand-by position by movement of the first force receiver by a force received from the first force applier. The second force receiver takes a projected position receiving a force from the second force applier to move the developing unit so the roller moves out of contact with the drum, the projected position being higher than the stand-by position.Type: ApplicationFiled: October 15, 2018Publication date: February 14, 2019Inventors: Akira Yoshimura, Kazunari Murayama, Susumu Nittani, Atsushi Numagami