Patents by Inventor Hiroshi Handa
Hiroshi Handa 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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Patent number: 11977345Abstract: A device includes a rotator having a rotation axis, a belt, a nip forming member surrounded by the belt, a holder holding the nip forming member, a first stay supporting the holder, an urging member urging the first stay toward the rotator, a second stay, and a connector. The nip forming member is configured to, with the rotator, pinch the belt to form a nip. The first stay extends in a width direction parallel to the rotation axis. The second stay is positioned upstream of the first stay in a moving direction of the belt at the nip. The moving direction is perpendicular to the width direction. The connector extends through at least one of the first stay and the second stay to connect the first stay to the second stay.Type: GrantFiled: March 1, 2021Date of Patent: May 7, 2024Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Kazuna Taguchi, Hiroshi Handa, Shuhei Fukue, Tomonori Watanabe, Kenji Takeuchi, Tatsuo Ogasawara
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Patent number: 11693343Abstract: A device includes a rotator having a rotation axis, a belt, a nip forming member surrounded by the belt and configured to, with the rotator, pinch the belt to form a nip, an urging member configured to urge one of the rotator and the nip forming member towards the other in a particular direction perpendicular to the rotation axis, an upstream guide and a downstream guide. The upstream guide includes an upstream guide surface configured to guide an inner peripheral surface of the belt. The nip forming member includes a facing surface which faces the rotator. An upstream edge of the facing surface in the moving direction is located at a position farther from the rotation axis, in the particular direction, than a downstream edge of the upstream guide surface.Type: GrantFiled: March 2, 2021Date of Patent: July 4, 2023Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Hiroshi Handa, Mingguang Zhang, Shuhei Fukue, Tokifumi Tanaka, Kenji Takeuchi, Hirotaka Imaeda
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Patent number: 11635716Abstract: A device includes a rotator having a rotation axis, a belt, a nip forming member surrounded by the belt, a first stay surrounded by the belt and extending in a width direction parallel to the rotation axis, a holder holding the nip forming member, and an urging member urging the first stay toward the rotator. The nip forming member is configured to, with the rotator, pinch the belt to form a nip. The first stay includes a first end and a second end. The holder includes a first engaging portion positioned at a first end of the holder, and a second engaging portion positioned at a second end of the holder. The first engaging portion engages the first end of the first stay. The second engaging portion engages the second end of the first stay.Type: GrantFiled: February 28, 2022Date of Patent: April 25, 2023Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Hiroshi Handa, Tomonori Watanabe, Shuhei Fukue, Kenji Takeuchi, Kazuna Taguchi, Tatsuo Ogasawara
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Publication number: 20220269200Abstract: A device includes a rotator having a rotation axis, a belt, a nip forming member surrounded by the belt, a first stay surrounded by the belt and extending in a width direction parallel to the rotation axis, a holder holding the nip forming member, and an urging member urging the first stay toward the rotator. The nip forming member is configured to, with the rotator, pinch the belt to form a nip. The first stay includes a first end and a second end. The holder includes a first engaging portion positioned at a first end of the holder, and a second engaging portion positioned at a second end of the holder. The first engaging portion engages the first end of the first stay. The second engaging portion engages the second end of the first stay.Type: ApplicationFiled: February 28, 2022Publication date: August 25, 2022Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Hiroshi HANDA, Tomonori WATANABE, Shuhei FUKUE, Kenji TAKEUCHI, Kazuna TAGUCHI, Tatsuo OGASAWARA
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Patent number: 11392067Abstract: A device includes a rotator, a belt facing the rotator and having an outer peripheral surface which contacts the rotator to form a nip therebetween, a first pad configured to press the belt toward the rotator to form one part of the nip, a second pad configured to press the belt toward the rotator, to form another part of the nip, a holder holding the first pad and the second pad, a stay supporting the holder, and an urging member urging the stay toward the rotator in an urging direction. The second pad is located upstream of the first pad in a conveyance direction in the nip orthogonal to the urging direction. At least a portion of a contact area between the stay and the holder is located downstream of a center of the nip and upstream of a front edge of the first pad in the conveyance direction.Type: GrantFiled: February 5, 2021Date of Patent: July 19, 2022Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Kazuna Taguchi, Tomonori Watanabe, Kenji Takeuchi, Hiroshi Handa, Mingguang Zhang, Shuhei Fukue, Hirotaka Imaeda
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Patent number: 11327424Abstract: A fixing device includes: a rotary body; a pressure body; a frame supporting the rotary body; and a pressure varying mechanism for providing a nip pressure to a nip region formed between the rotary body and the pressure body. The pressure varying mechanism includes a first spring and a second spring for urging one of the rotary body and the pressure body. The first spring applies a first urging force, and the second spring applies a second urging force acting in an opposite direction from the first urging force. The pressure varying mechanism can vary the nip pressure between a first nip pressure and a second nip pressure smaller than the first nip pressure. The nip pressure becomes the first nip pressure while only the first urging force is applied, and becomes the second nip pressure while both of the first urging force and the second urging force are applied.Type: GrantFiled: March 24, 2021Date of Patent: May 10, 2022Inventors: Hiroshi Handa, Tokifumi Tanaka, Shuhei Fukue, Tomonori Watanabe
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Patent number: 11300907Abstract: A device includes a rotator having a rotation axis, a belt, a nip forming member surrounded by the belt, a first stay surrounded by the belt and extending in a width direction parallel to the rotation axis, a holder holding the nip forming member, and an urging member urging the first stay toward the rotator. The nip forming member is configured to, with the rotator, pinch the belt to form a nip. The first stay includes a first end and a second end. The holder includes a first engaging portion positioned at a first end of the holder, and a second engaging portion positioned at a second end of the holder. The first engaging portion engages the first end of the first stay. The second engaging portion engages the second end of the first stay.Type: GrantFiled: April 23, 2021Date of Patent: April 12, 2022Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Hiroshi Handa, Tomonori Watanabe, Shuhei Fukue, Kenji Takeuchi, Kazuna Taguchi, Tatsuo Ogasawara
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Publication number: 20210240118Abstract: A device includes a rotator having a rotation axis, a belt, a nip forming member surrounded by the belt, a first stay surrounded by the belt and extending in a width direction parallel to the rotation axis, a holder holding the nip forming member, and an urging member urging the first stay toward the rotator. The nip forming member is configured to, with the rotator, pinch the belt to form a nip. The first stay includes a first end and a second end. The holder includes a first engaging portion positioned at a first end of the holder, and a second engaging portion positioned at a second end of the holder. The first engaging portion engages the first end of the first stay. The second engaging portion engages the second end of the first stay.Type: ApplicationFiled: April 23, 2021Publication date: August 5, 2021Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Hiroshi HANDA, Tomonori WATANABE, Shuhei FUKUE, Kenji TAKEUCHI, Kazuna TAGUCHI, Tatsuo OGASAWARA
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Publication number: 20210208529Abstract: A fixing device includes: a rotary body; a pressure body; a frame supporting the rotary body; and a pressure varying mechanism for providing a nip pressure to a nip region formed between the rotary body and the pressure body. The pressure varying mechanism includes a first spring and a second spring for urging one of the rotary body and the pressure body. The first spring applies a first urging force, and the second spring applies a second urging force acting in an opposite direction from the first urging force. The pressure varying mechanism can vary the nip pressure between a first nip pressure and a second nip pressure smaller than the first nip pressure. The nip pressure becomes the first nip pressure while only the first urging force is applied, and becomes the second nip pressure while both of the first urging force and the second urging force are applied.Type: ApplicationFiled: March 24, 2021Publication date: July 8, 2021Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Hiroshi HANDA, Tokifumi TANAKA, Shuhei FUKUE, Tomonori WATANABE
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Publication number: 20210181663Abstract: A device includes a rotator having a rotation axis, a belt, a nip forming member surrounded by the belt and configured to, with the rotator, pinch the belt to form a nip, an urging member configured to urge one of the rotator and the nip forming member towards the other in a particular direction perpendicular to the rotation axis, an upstream guide and a downstream guide. The upstream guide includes an upstream guide surface configured to guide an inner peripheral surface of the belt. The nip forming member includes a facing surface which faces the rotator. An upstream edge of the facing surface in the moving direction is located at a position farther from the rotation axis, in the particular direction, than a downstream edge of the upstream guide surface.Type: ApplicationFiled: March 2, 2021Publication date: June 17, 2021Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Hiroshi Handa, Mingguang Zhang, Shuhei Fukue, Tokifumi Tanaka, Kenji Takeuchi, Hirotaka Imaeda
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Publication number: 20210181662Abstract: A device includes a rotator having a rotation axis, a belt, a nip forming member surrounded by the belt, a holder holding the nip forming member, a first stay supporting the holder, an urging member urging the first stay toward the rotator, a second stay, and a connector. The nip forming member is configured to, with the rotator, pinch the belt to form a nip. The first stay extends in a width direction parallel to the rotation axis. The second stay is positioned upstream of the first stay in a moving direction of the belt at the nip. The moving direction is perpendicular to the width direction. The connector extends through at least one of the first stay and the second stay to connect the first stay to the second stay.Type: ApplicationFiled: March 1, 2021Publication date: June 17, 2021Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Kazuna TAGUCHI, Hiroshi HANDA, Shuhei FUKUE, Tomonori WATANABE, Kenji TAKEUCHI, Tatsuo OGASAWARA
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Publication number: 20210157260Abstract: A device includes a rotator, a belt facing the rotator and having an outer peripheral surface which contacts the rotator to form a nip therebetween, a first pad configured to press the belt toward the rotator to form one part of the nip, a second pad configured to press the belt toward the rotator, to form another part of the nip, a holder holding the first pad and the second pad, a stay supporting the holder, and an urging member urging the stay toward the rotator in an urging direction. The second pad is located upstream of the first pad in a conveyance direction in the nip orthogonal to the urging direction. At least a portion of a contact area between the stay and the holder is located downstream of a center of the nip and upstream of a front edge of the first pad in the conveyance direction.Type: ApplicationFiled: February 5, 2021Publication date: May 27, 2021Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Kazuna TAGUCHI, Tomonori WATANABE, Kenji TAKEUCHI, Hiroshi HANDA, Mingguang ZHANG, Shuhei FUKUE, Hirotaka IMAEDA
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Patent number: 10996600Abstract: A device includes a rotator having a rotation axis, a belt, a nip forming member surrounded by the belt, a first stay surrounded by the belt and extending in a width direction parallel to the rotation axis, a holder holding the nip forming member, and an urging member urging the first stay toward the rotator. The nip forming member is configured to, with the rotator, pinch the belt to form a nip. The first stay includes a first end and a second end. The holder includes a first engaging portion positioned at a first end of the holder, and a second engaging portion positioned at a second end of the holder. The first engaging portion engages the first end of the first stay. The second engaging portion engages the second end of the first stay.Type: GrantFiled: December 30, 2019Date of Patent: May 4, 2021Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Hiroshi Handa, Tomonori Watanabe, Shuhei Fukue, Kenji Takeuchi, Kazuna Taguchi, Tatsuo Ogasawara
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Patent number: 10994007Abstract: Disclosed is an immunity inducer. The immunity inducer comprises virus like particles; the virus like particles comprise a virus-derived outer coat protein and an antigen-bound protein comprising an exogenous antigen; the outer coat protein constitutes an outer coat of the virus like particles, and the antigen-bound protein is comprised in the outer coat; and the virus like particles induce an immune effect of a living body on the antigen.Type: GrantFiled: November 29, 2016Date of Patent: May 4, 2021Assignees: Saitama Medical University, SYSMEX CORPORATIONInventors: Hiroshi Handa, Masaaki Kawano, Masahiko Kato
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Patent number: 10969719Abstract: A fixing device includes: a rotary body; a pressure body; a frame supporting the rotary body; and a pressure varying mechanism for providing a nip pressure to a nip region formed between the rotary body and the pressure body. The pressure varying mechanism includes a first spring and a second spring for urging one of the rotary body and the pressure body. The first spring applies a first urging force, and the second spring applies a second urging force acting in an opposite direction from the first urging force. The pressure varying mechanism can vary the nip pressure between a first nip pressure and a second nip pressure smaller than the first nip pressure. The nip pressure becomes the first nip pressure while only the first urging force is applied, and becomes the second nip pressure while both of the first urging force and the second urging force are applied.Type: GrantFiled: June 10, 2020Date of Patent: April 6, 2021Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Hiroshi Handa, Tokifumi Tanaka, Shuhei Fukue, Tomonori Watanabe
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Publication number: 20210080878Abstract: A fixing device according to the present disclosure includes a heater, a rotating member heated by the heater, an endless belt, a nip forming member, and a sliding sheet. The nip forming member forms a nip portion by nipping the endless belt between the nip forming member and the rotating member. The sliding sheet has a first portion nipped between the endless belt and the nip forming member and a second portion extending from the first portion. The sliding sheet has higher flexural rigidity than the endless belt. The second portion has a bent portion bent so as to contact an inner circumferential surface of the endless belt. The bent portion configured to urge, in a direction directed from an inner side toward an outer side of the endless belt, a portion of the endless belt positioned downstream of the nip portion in the moving direction.Type: ApplicationFiled: September 28, 2020Publication date: March 18, 2021Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Hiroshi HANDA, Kenji TAKEUCHI
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Patent number: 10948858Abstract: A device includes a rotator having a rotation axis, a belt, a nip forming member surrounded by the belt and configured to, with the rotator, pinch the belt to form a nip, an urging member configured to urge one of the rotator and the nip forming member towards the other in a particular direction perpendicular to the rotation axis, an upstream guide and a downstream guide. The upstream guide includes an upstream guide surface configured to guide an inner peripheral surface of the belt. The nip forming member includes a facing surface which faces the rotator. An upstream edge of the facing surface in the moving direction is located at a position farther from the rotation axis, in the particular direction, than a downstream edge of the upstream guide surface.Type: GrantFiled: December 30, 2019Date of Patent: March 16, 2021Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Hiroshi Handa, Mingguang Zhang, Shuhei Fukue, Tokifumi Tanaka, Kenji Takeuchi, Hirotaka Imaeda
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Patent number: 10942478Abstract: A device includes a rotator having a rotation axis, a belt, a nip forming member surrounded by the belt, a holder holding the nip forming member, a first stay supporting the holder, an urging member urging the first stay toward the rotator, a second stay, and a connector. The nip forming member is configured to, with the rotator, pinch the belt to form a nip. The first stay extends in a width direction parallel to the rotation axis. The second stay is positioned upstream of the first stay in a moving direction of the belt at the nip. The moving direction is perpendicular to the width direction. The connector extends through at least one of the first stay and the second stay to connect the first stay to the second stay.Type: GrantFiled: December 30, 2019Date of Patent: March 9, 2021Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Kazuna Taguchi, Hiroshi Handa, Shuhei Fukue, Tomonori Watanabe, Kenji Takeuchi, Tatsuo Ogasawara
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Patent number: 10928762Abstract: A device includes a rotator, a belt facing the rotator and having an outer peripheral surface which contacts the rotator to form a nip therebetween, a first pad configured to press the belt toward the rotator to form one part of the nip, a second pad configured to press the belt toward the rotator, to form another part of the nip, a holder holding the first pad and the second pad, a stay supporting the holder, and an urging member urging the stay toward the rotator in an urging direction. The second pad is located upstream of the first pad in a conveyance direction in the nip orthogonal to the urging direction. At least a portion of a contact area between the stay and the holder is located downstream of a center of the nip and upstream of a front edge of the first pad in the conveyance direction.Type: GrantFiled: December 30, 2019Date of Patent: February 23, 2021Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Kazuna Taguchi, Tomonori Watanabe, Kenji Takeuchi, Hiroshi Handa, Mingguang Zhang, Shuhei Fukue, Hirotaka Imaeda
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Publication number: 20210011406Abstract: A fixing device comprises a heater, a rotating member, an endless belt, an elastic body and a holder holding the elastic body. The holder includes a base surface supporting the elastic body, a facing portion protruding from the base surface and facing the elastic body in a moving direction in which, in the nip portion, the endless belt moves in a circumferential direction, and a plurality of projecting portions projecting from the facing portion and contacting the elastic body so as to bite into the elastic body in a state in which the elastic body is elastically deformed. The plurality of projecting portions are arranged in a row in a width direction of the endless belt and disposed at positions different from a position of the nip portion in the moving direction.Type: ApplicationFiled: September 28, 2020Publication date: January 14, 2021Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Mingguang Zhang, Tokifumi Tanaka, Hiroshi Handa, Masahito Kajita