Patents by Inventor Toshiaki Takeuchi
Toshiaki Takeuchi 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).
-
Patent number: 11971682Abstract: A cartridge includes a first unit including a photosensitive member, and a second unit including a developer bearing member and a force receiving portion, the second unit being configured to be rotatable about a first axis to move with respect to the first unit between a first position and a second position. In a state where the first unit is in a same posture as when an image forming operation is performed, the second unit is disposed at the second position by its own weight. The developer bearing member is configured to be rotatable about a second axis. When seen in the direction of the first axis, a first distance between the force receiving portion and the second axis is smaller than a second distance between the first axis and the second axis and a third distance between the first axis and the force receiving portion.Type: GrantFiled: April 10, 2023Date of Patent: April 30, 2024Assignee: Canon Kabushiki KaishaInventors: Hideki Kakuta, Toshiaki Takeuchi, Yu Akiba, Shuichi Gofuku, Tomofumi Kawamura, Yusuke Atsu, Joji Goto
-
Publication number: 20230418221Abstract: A cartridge includes a photosensitive drum rotatable about an axis extending in an axial direction; a memory including a storing element configured to store information, a memory contact electrically connected to the storing element, and a substrate having a surface on which the memory contact is provided; and a frame which supports the photosensitive drum, on which the substrate is mounted, and which includes a first end with respect to the axial direction and a second end opposite from the first end. The frame includes a container provided with an accommodating chamber for accommodating a developer collected from the photosensitive drum and with an opening communicating with the accommodating chamber and includes a mounting member mounted on the container so as to cover the opening. The mounting member includes a supporting portion for supporting the substrate.Type: ApplicationFiled: June 12, 2023Publication date: December 28, 2023Inventors: YOSUKE KASHIIDE, YUICHI FUKUI, NAOKI HAYASHI, NAOKI MAEDA, TAKASHI KIMURA, TOSHIAKI TAKEUCHI, SHUICHI GOFUKU, TAKAYUKI YADA
-
Publication number: 20230418212Abstract: 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: ApplicationFiled: September 6, 2023Publication date: December 28, 2023Inventors: Toshiaki Takeuchi, Koichi Ooishi, Hiroki Shimizu
-
Patent number: 11789401Abstract: 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: GrantFiled: September 30, 2022Date of Patent: October 17, 2023Assignee: CANON KABUSHIKI KAISHAInventors: Toshiaki Takeuchi, Koichi Ooishi, Hiroki Shimizu
-
Publication number: 20230244181Abstract: A cartridge includes a first unit including a photosensitive member, and a second unit including a developer bearing member and a force receiving portion, the second unit being configured to be rotatable about a first axis to move with respect to the first unit between a first position and a second position. In a state where the first unit is in a same posture as when an image forming operation is performed, the second unit is disposed at the second position by its own weight. The developer bearing member is configured to be rotatable about a second axis. When seen in the direction of the first axis, a first distance between the force receiving portion and the second axis is smaller than a second distance between the first axis and the second axis and a third distance between the first axis and the force receiving portion.Type: ApplicationFiled: April 10, 2023Publication date: August 3, 2023Inventors: Hideki Kakuta, Toshiaki Takeuchi, Yu Akiba, Shuichi Gofuku, Tomofumi Kawamura, Yusuke Atsu, Joji Goto
-
Patent number: 11650538Abstract: A cartridge includes a first unit including a photosensitive member, and a second unit including a developer bearing member and a force receiving portion, the second unit being configured to be rotatable about a first axis to move with respect to the first unit between a first position and a second position. In a state where the first unit is in a same posture as when an image forming operation is performed, the second unit is disposed at the second position by its own weight. The developer bearing member is configured to be rotatable about a second axis. When seen in the direction of the first axis, a first distance between the force receiving portion and the second axis is smaller than a second distance between the first axis and the second axis and a third distance between the first axis and the force receiving portion.Type: GrantFiled: February 16, 2022Date of Patent: May 16, 2023Assignee: Canon Kabushiki KaishaInventors: Hideki Kakuta, Toshiaki Takeuchi, Yu Akiba, Shuichi Gofuku, Tomofumi Kawamura, Yusuke Atsu, Joji Goto
-
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
-
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
-
Publication number: 20230025390Abstract: 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: ApplicationFiled: September 30, 2022Publication date: January 26, 2023Inventors: Toshiaki Takeuchi, Koichi Ooishi, Hiroki Shimizu
-
Patent number: 11493878Abstract: 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: GrantFiled: July 16, 2021Date of Patent: November 8, 2022Assignee: CANON KABUSHIKI KAISHAInventors: Toshiaki Takeuchi, Koichi Ooishi, Hiroki Shimizu
-
Publication number: 20220259385Abstract: The present invention relates to the provision of an aqueous emulsion composition for producing a film showing slippery properties containing hydrophobically modified cellulose fibers and at the same time improving water resistance and durability of the film. Since the emulsion composition of the present invention is capable of forming a film having slippery properties, which can be utilized on various surfaces, for example, those in the fields of coatings for ships and bridges, cosmetics, and the like.Type: ApplicationFiled: July 31, 2020Publication date: August 18, 2022Applicant: KAO CORPORATIONInventors: Toshiaki TAKEUCHI, Yoshinori HASEGAWA, Takuya MASUDA, Kouji OHSAKI
-
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
-
Patent number: 11389550Abstract: Provided is a novel nanoparticle, a contrast agent for magnetic resonance imaging containing the same, and a ligand compound used for production of the nanoparticle. The present invention relates to a nanoparticle including: a metal particle containing iron oxide; and a ligand which is bound to a metal atom on a surface of the metal particle and is represented by formula (3): where m is an integer of 1 to 4, and a broken line represents a coordinate bond with a metal atom on the surface of the metal particle.Type: GrantFiled: June 27, 2018Date of Patent: July 19, 2022Assignees: RIKEN, NATIONAL INSTITUTES FOR QUANTUM SCIENCE AND TECHNOLOGYInventors: Daigo Miyajima, Toshiaki Takeuchi, Seunghyun Sim, Takuzo Aida, Ichio Aoki
-
Publication number: 20220184236Abstract: Provided is a novel nanoparticle, a contrast agent for magnetic resonance imaging containing the same, and a zwitterionic ligand compound used in production of the nanoparticle. The contrast agent for MRI of the present invention can be suitably used as a contrast agent for MRI in a medical field. The nanoparticle and the zwitterionic ligand compound of the present invention are applicable to various pharmaceutical compositions and the like, including a contrast agent for MRI, and can be used widely in the fields of pharmaceuticals, biotechnology, and the like, including various diagnosis methods and examination reagents.Type: ApplicationFiled: December 27, 2019Publication date: June 16, 2022Inventors: Tsuyoshi Mizutani, Hiroyoshi Yamada, Hiroki Toya, Akihiko Fujikawa, Seiji Yoshimura, Shigetoshi Kikuchi, Daigo Miyajima, Toshiaki Takeuchi, Takuzo Aida, Ichio Aoki
-
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
-
Publication number: 20220171328Abstract: A cartridge includes a first unit including a photosensitive member, and a second unit including a developer bearing member and a force receiving portion, the second unit being configured to be rotatable about a first axis to move with respect to the first unit between a first position and a second position. In a state where the first unit is in a same posture as when an image forming operation is performed, the second unit is disposed at the second position by its own weight. The developer bearing member is configured to be rotatable about a second axis. When seen in the direction of the first axis, a first distance between the force receiving portion and the second axis is smaller than a second distance between the first axis and the second axis and a third distance between the first axis and the force receiving portion.Type: ApplicationFiled: February 16, 2022Publication date: June 2, 2022Inventors: Hideki Kakuta, Toshiaki Takeuchi, Yu Akiba, Shuichi Gofuku, Tomofumi Kawamura, Yusuke Atsu, Joji Goto
-
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
-
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
-
Patent number: 11199789Abstract: Provided is an image forming unit including a photosensitive unit including an image bearing member, a developing unit including a developer bearing member and a container capable of containing a developer, a rotation shaft, the developing unit being rotated around the rotation shaft and positioned at one of a development position where the developer bearing member supplies the developer to the image bearing member and a separation position where the developer bearing member separates from the image bearing member, and a sensing portion sensing a variation or an amount corresponding to an amount of the developer contained in the developing unit. The rotation shaft is located below a developing portion, which is formed of the image bearing member and the developer bearing member, in a gravity direction.Type: GrantFiled: September 16, 2020Date of Patent: December 14, 2021Assignee: CANON KABUSHIKI KAISHAInventors: Yohei Kusano, Hiroki Shimizu, Toshiaki Takeuchi, Hideki Kakuta
-
Patent number: 11188021Abstract: 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: GrantFiled: September 15, 2020Date of Patent: November 30, 2021Assignee: CANON KABUSHIKI KAISHAInventors: Toshiaki Takeuchi, Koichi Ooishi, Hiroki Shimizu