Patents by Inventor Masatoshi Yamashita
Masatoshi Yamashita 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: 20240132757Abstract: The present invention relates to a pressure-sensitive adhesive composition including a base polymer and a material that is discolored by water or water vapor, a pressure-sensitive adhesive sheet including a pressure-sensitive adhesive layer containing the pressure-sensitive adhesive composition, a method for producing the pressure-sensitive adhesive composition, and a method for attaching the pressure-sensitive adhesive sheet to an adherend and detecting presence of the water or the water vapor in the attached location.Type: ApplicationFiled: February 3, 2022Publication date: April 25, 2024Inventors: Yosuke SHIMIZU, Sayaka YAMASHITA, Kyotaro YAMADA, Masatoshi KATO
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Patent number: 11960237Abstract: A cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, the cartridge includes (i) a rotatable developing roller for developing a latent image formed on a photosensitive member; (ii) a first drive transmission member capable of receiving a rotational force originated by the main assembly; (iii) a second drive transmission member capable of coupling with the first drive transmission member and capable of transmitting the rotational force received by the first drive transmission member to the developing roller; and (iv) a coupling disconnection member including a force receiving portion capable of receiving the force originated by the main assembly, and an urging portion capable of urging at least one of the first drive transmission member and the second drive transmission member by the force received by the force receiving portion to separate one of the first drive transmission member and the second drive transmission member from the other, thereby disconnecting tType: GrantFiled: July 11, 2022Date of Patent: April 16, 2024Assignee: Canon Kabushiki KaishaInventors: Masaaki Sato, Masatoshi Yamashita, Satoshi Nishiya, Kazuhiko Kanno
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Publication number: 20240118272Abstract: Disclosed is a method for measuring an activity of alkaline phosphatase contained in an extracellular vesicle in a sample, including acquiring an activity value of alkaline phosphatase contained in an extracellular vesicle in a sample using a calibrator, in which the calibrator contains a conjugate in which a polypeptide having alkaline phosphatase activity and a polypeptide including an amino acid sequence of a membrane protein present on a surface of the extracellular vesicle are covalently bound.Type: ApplicationFiled: September 18, 2023Publication date: April 11, 2024Applicant: SYSMEX CORPORATIONInventors: Eiya TAMADA, Masatoshi Yanagida, Kazuto Yamashita, Elnaz Nakhael, Mami Onishi, Maria Kiriyama
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Publication number: 20240069489Abstract: A cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, the cartridge includes (i) a rotatable developing roller for developing a latent image formed on a photosensitive member; (ii) a first drive transmission member capable of receiving a rotational force originated by the main assembly; (iii) a second drive transmission member capable of coupling with the first drive transmission member and capable of transmitting the rotational force received by the first drive transmission member to the developing roller; and (iv) a coupling disconnection member including a force receiving portion capable of receiving the force originated by the main assembly, and an urging portion capable of urging at least one of the first drive transmission member and the second drive transmission member by the force received by the force receiving portion to separate one of the first drive transmission member and the second drive transmission member from the other, thereby disconnecting tType: ApplicationFiled: November 9, 2023Publication date: February 29, 2024Inventors: Masaaki Sato, Masatoshi Yamashita, Satoshi Nishiya, Kazuhiko Kanno
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Patent number: 11874627Abstract: A cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, the cartridge includes (i) a rotatable developing roller for developing a latent image formed on a photosensitive member; (ii) a first drive transmission member capable of receiving a rotational force originated by the main assembly; (iii) a second drive transmission member capable of coupling with the first drive transmission member and capable of transmitting the rotational force received by the first drive transmission member to the developing roller; and (iv) a coupling disconnection member including a force receiving portion capable of receiving the force originated by the main assembly, and an urging portion capable of urging at least one of the first drive transmission member and the second drive transmission member by the force received by the force receiving portion to separate one of the first drive transmission member and the second drive transmission member from the other, thereby disconnecting tType: GrantFiled: July 11, 2022Date of Patent: January 16, 2024Assignee: Canon Kabushiki KaishaInventors: Masaaki Sato, Masatoshi Yamashita, Satoshi Nishiya, Kazuhiko Kanno
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Patent number: 11852999Abstract: An image forming apparatus includes a first metal plate provided with a through hole; a second metal plate provided opposed to the first plate; a third metal plate provided between the first plate and the second plate; and a fixing member fixing the first plate and the third metal plate to each other. The fixing member has a first surface and a second surface extending in a direction crossing the first surface. The third metal plate extends outward in a direction in which the first plate and the second plate opposes to each other, and the third metal plate is provided with a first projection penetrating the through hole, and wherein the first projection is fixed on the first surface. The first plate is fixed on the second surface of the fixing member.Type: GrantFiled: October 4, 2022Date of Patent: December 26, 2023Assignee: Canon Kabushiki KaishaInventors: Yoichiro Iizuka, Kohei Koguchi, Masatoshi Yamashita
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Publication number: 20230195031Abstract: A process cartridge includes a photosensitive drum, a developing roller, and a movable lever. The process cartridge also includes a coupling member operatively connected to the developing roller, with the coupling member being movable in response to a movement of the lever. The process cartridge is configured such that, when the process cartridge is oriented with the photosensitive drum and the developing roller positioned at a downward side of the process cartridge, an end of the lever is positioned lower than a rotational axis of the photosensitive drum and a rotational axis of the developing roller. A process cartridge includes a photosensitive drum, a developing roller, and a movable lever. The process cartridge also includes a coupling member operatively connected to the developing roller, with the coupling member being movable in response to a movement of the lever.Type: ApplicationFiled: February 16, 2023Publication date: June 22, 2023Inventors: Masaaki Sato, Kazuhiko Kanno, Satoshi Nishiya, Masatoshi Yamashita
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Patent number: 11614710Abstract: A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, includes a rotatable photosensitive drum; a rotatable developing roller configured to develop image formed on the drum, the developing roller being capable of contacting to and spacing from the drum; an urging force receiving portion configured to receive, from a main assembly side urging member, an urging force for spacing the developing roller from the drum; a cartridge side drive transmission member capable of the coupling with a main assembly side drive transmission member and configured to receive, from the main assembly side drive transmission member, a rotational force for rotating the developing roller; and a decoupling member capable of urging the cartridge side drive transmission member by the urging force received by the urging force receiving portion to decouple the cartridge side drive transmission member from the main assembly side drive transmission member.Type: GrantFiled: May 24, 2022Date of Patent: March 28, 2023Assignee: Canon Kabushiki KaishaInventors: Masaaki Sato, Kazuhiko Kanno, Satoshi Nishiya, Masatoshi Yamashita
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Publication number: 20230023209Abstract: An image forming apparatus includes a first metal plate provided with a through hole; a second metal plate provided opposed to the first plate; a third metal plate provided between the first plate and the second plate; and a fixing member fixing the first plate and the third metal plate to each other. The fixing member has a first surface and a second surface extending in a direction crossing the first surface. The third metal plate extends outward in a direction in which the first plate and the second plate opposes to each other, and the third metal plate is provided with a first projection penetrating the through hole, and wherein the first projection is fixed on the first surface. The first plate is fixed on the second surface of the fixing member.Type: ApplicationFiled: October 4, 2022Publication date: January 26, 2023Inventors: Yoichiro IIZUKA, Kohei KOGUCHI, Masatoshi YAMASHITA
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Patent number: 11520284Abstract: A cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, the cartridge includes (i) a rotatable developing roller for developing a latent image formed on a photosensitive member; (ii) a first drive transmission member capable of receiving a rotational force originated by the main assembly; (iii) a second drive transmission member capable of coupling with the first drive transmission member and capable of transmitting the rotational force received by the first drive transmission member to the developing roller; and (iv) a coupling disconnection member including a force receiving portion capable of receiving the force originated by the main assembly, and an urging portion capable of urging at least one of the first drive transmission member and the second drive transmission member by the force received by the force receiving portion to separate one of the first drive transmission member and the second drive transmission member from the other, thereby disconnecting tType: GrantFiled: March 1, 2021Date of Patent: December 6, 2022Assignee: Canon Kabushiki KaishaInventors: Masaaki Sato, Masatoshi Yamashita, Satoshi Nishiya, Kazuhiko Kanno
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Patent number: 11493875Abstract: An image forming apparatus includes a first metal plate provided with a through hole; a second metal plate provided opposed to the first plate; a third metal plate provided between the first plate and the second plate; and a fixing member fixing the first plate and the third metal plate to each other. The fixing member has a first surface and a second surface extending in a direction crossing the first surface. The third metal plate extends outward in a direction in which the first plate and the second plate opposes to each other, and the third metal plate is provided with a first projection penetrating the through hole, and wherein the first projection is fixed on the first surface. The first plate is fixed on the second surface of the fixing member.Type: GrantFiled: December 3, 2019Date of Patent: November 8, 2022Assignee: Canon Kabushiki KaishaInventors: Yoichiro Iizuka, Kohei Koguchi, Masatoshi Yamashita
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Publication number: 20220350292Abstract: A cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, the cartridge includes (i) a rotatable developing roller for developing a latent image formed on a photosensitive member; (ii) a first drive transmission member capable of receiving a rotational force originated by the main assembly; (iii) a second drive transmission member capable of coupling with the first drive transmission member and capable of transmitting the rotational force received by the first drive transmission member to the developing roller; and (iv) a coupling disconnection member including a force receiving portion capable of receiving the force originated by the main assembly, and an urging portion capable of urging at least one of the first drive transmission member and the second drive transmission member by the force received by the force receiving portion to separate one of the first drive transmission member and the second drive transmission member from the other, thereby disconnecting tType: ApplicationFiled: July 11, 2022Publication date: November 3, 2022Inventors: Masaaki Sato, Masatoshi Yamashita, Satoshi Nishiya, Kazuhiko Kanno
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Patent number: 11474478Abstract: A cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, the cartridge includes (i) a rotatable developing roller for developing a latent image formed on a photosensitive member; (ii) a first drive transmission member capable of receiving a rotational force originated by the main assembly; (iii) a second drive transmission member capable of coupling with the first drive transmission member and capable of transmitting the rotational force received by the first drive transmission member to the developing roller; and (iv) a coupling disconnection member including a force receiving portion capable of receiving the force originated by the main assembly, and an urging portion capable of urging at least one of the first drive transmission member and the second drive transmission member by the force received by the force receiving portion to separate one of the first drive transmission member and the second drive transmission member from the other, thereby disconnecting tType: GrantFiled: March 1, 2021Date of Patent: October 18, 2022Assignee: Canon Kabushiki KaishaInventors: Masaaki Sato, Masatoshi Yamashita, Satoshi Nishiya, Kazuhiko Kanno
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Patent number: 11442406Abstract: A cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, the cartridge includes (i) a rotatable developing roller for developing a latent image formed on a photosensitive member; (ii) a first drive transmission member capable of receiving a rotational force originated by the main assembly; (iii) a second drive transmission member capable of coupling with the first drive transmission member and capable of transmitting the rotational force received by the first drive transmission member to the developing roller; and (iv) a coupling disconnection member including a force receiving portion capable of receiving the force originated by the main assembly, and an urging portion capable of urging at least one of the first drive transmission member and the second drive transmission member by the force received by the force receiving portion to separate one of the first drive transmission member and the second drive transmission member from the other, thereby disconnecting tType: GrantFiled: March 1, 2021Date of Patent: September 13, 2022Assignee: Canon Kabushiki KaishaInventors: Masaaki Sato, Masatoshi Yamashita, Satoshi Nishiya, Kazuhiko Kanno
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Publication number: 20220283538Abstract: A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, includes a rotatable photosensitive drum; a rotatable developing roller configured to develop image formed on the drum, the developing roller being capable of contacting to and spacing from the drum; an urging force receiving portion configured to receive, from a main assembly side urging member, an urging force for spacing the developing roller from the drum; a cartridge side drive transmission member capable of the coupling with a main assembly side drive transmission member and configured to receive, from the main assembly side drive transmission member, a rotational force for rotating the developing roller; and a decoupling member capable of urging the cartridge side drive transmission member by the urging force received by the urging force receiving portion to decouple the cartridge side drive transmission member from the main assembly side drive transmission member.Type: ApplicationFiled: May 24, 2022Publication date: September 8, 2022Inventors: Masaaki Sato, Kazuhiko Kanno, Satoshi Nishiya, Masatoshi Yamashita
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Patent number: 11385593Abstract: A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, includes a rotatable photosensitive drum; a rotatable developing roller configured to develop image formed on the drum, the developing roller being capable of contacting to and spacing from the drum; an urging force receiving portion configured to receive, from a main assembly side urging member, an urging force for spacing the developing roller from the drum; a cartridge side drive transmission member capable of the coupling with a main assembly side drive transmission member and configured to receive, from the main assembly side drive transmission member, a rotational force for rotating the developing roller; and a decoupling member capable of urging the cartridge side drive transmission member by the urging force received by the urging force receiving portion to decouple the cartridge side drive transmission member from the main assembly side drive transmission member.Type: GrantFiled: December 8, 2020Date of Patent: July 12, 2022Assignee: Canon Kabushiki KaishaInventors: Masaaki Sato, Kazuhiko Kanno, Satoshi Nishiya, Masatoshi Yamashita
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Publication number: 20220019170Abstract: An image forming apparatus includes a first metal plate provided with a through hole; a second metal plate provided opposed to the first plate; a third metal plate provided between the first plate and the second plate; and a fixing member fixing the first plate and the third metal plate to each other. The fixing member has a first surface and a second surface extending in a direction crossing the first surface. The third metal plate extends outward in a direction in which the first plate and the second plate opposes to each other, and the third metal plate is provided with a first projection penetrating the through hole, and wherein the first projection is fixed on the first surface. The first plate is fixed on the second surface of the fixing member.Type: ApplicationFiled: December 3, 2019Publication date: January 20, 2022Inventors: Yoichiro IIZUKA, Kohei KOGUCHI, Masatoshi YAMASHITA
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Patent number: 11112751Abstract: A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, includes a rotatable photosensitive drum; a rotatable developing roller configured to develop image formed on the drum, the developing roller being capable of contacting to and spacing from the drum; an urging force receiving portion configured to receive, from a main assembly side urging member, an urging force for spacing the developing roller from the drum; a cartridge side drive transmission member capable of the coupling with a main assembly side drive transmission member and configured to receive, from the main assembly side drive transmission member, a rotational force for rotating the developing roller; and a decoupling member capable of urging the cartridge side drive transmission member by the urging force received by the urging force receiving portion to decouple the cartridge side drive transmission member from the main assembly side drive transmission member.Type: GrantFiled: March 4, 2021Date of Patent: September 7, 2021Assignee: Canon Kabushiki KaishaInventors: Masaaki Sato, Kazuhiko Kanno, Satoshi Nishiya, Masatoshi Yamashita
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Publication number: 20210191314Abstract: A cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, the cartridge includes (i) a rotatable developing roller for developing a latent image formed on a photosensitive member; (ii) a first drive transmission member capable of receiving a rotational force originated by the main assembly; (iii) a second drive transmission member capable of coupling with the first drive transmission member and capable of transmitting the rotational force received by the first drive transmission member to the developing roller; and (iv) a coupling disconnection member including a force receiving portion capable of receiving the force originated by the main assembly, and an urging portion capable of urging at least one of the first drive transmission member and the second drive transmission member by the force received by the force receiving portion to separate one of the first drive transmission member and the second drive transmission member from the other, thereby disconnecting tType: ApplicationFiled: March 1, 2021Publication date: June 24, 2021Inventors: Masaaki Sato, Masatoshi Yamashita, Satoshi Nishiya, Kazuhiko Kanno
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Publication number: 20210191312Abstract: A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, includes a rotatable photosensitive drum; a rotatable developing roller configured to develop image formed on the drum, the developing roller being capable of contacting to and spacing from the drum; an urging force receiving portion configured to receive, from a main assembly side urging member, an urging force for spacing the developing roller from the drum; a cartridge side drive transmission member capable of the coupling with a main assembly side drive transmission member and configured to receive, from the main assembly side drive transmission member, a rotational force for rotating the developing roller; and a decoupling member capable of urging the cartridge side drive transmission member by the urging force received by the urging force receiving portion to decouple the cartridge side drive transmission member from the main assembly side drive transmission member.Type: ApplicationFiled: March 4, 2021Publication date: June 24, 2021Inventors: Masaaki Sato, Kazuhiko Kanno, Satoshi Nishiya, Masatoshi Yamashita