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公开(公告)号：US10120308B2
公开(公告)日：2018-11-06
申请号：US15647062
申请日：2017-07-11
发明人： Takaaki Akamatsu , Masashi Tanaka , Kensuke Umeda , Shoichiro Ikegami , Sho Taguchi , Ai Suzuki
摘要： An image heating device includes a rotator, a heater including a heat generating resistor, a connector electrically connected to the heater, and a power interrupting unit that detects an abnormal temperature rise of the heater and interrupt supply of the power to the heater. The power interrupting unit includes a first terminal and a second terminal, a first conductive sheet metal that electrically connects the connector to the first terminal, a second conductive sheet metal that to electrically connects the connector to the second terminal via the heat generating resistor, a length of the second conductive sheet metal being different from a length of the first conductive sheet metal in the longitudinal direction of the heater, and a supporting member supporting the heater and including a regulation portion that regulates rotation of the power interrupting unit.
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公开(公告)号：US20180024481A1
公开(公告)日：2018-01-25
申请号：US15650735
申请日：2017-07-14
发明人： Kensuke Umeda , Masashi Tanaka , Shoichiro Ikegami , Sho Taguchi , Ai Suzuki , Hikaru Osada , Toru Imaizumi
CPC分类号： G03G15/2053 , G03G15/2064 , G03G15/6555 , G03G21/1604 , H05B3/0095
摘要： A fixing device includes a heating rotating member having a conductive layer and an exposed portion in which the conductive layer is partially exposed, and a roller including a metal core and an elastic portion, the roller forming a nip portion with the heating rotating member, the elastic portion being elastically deformed in a region where the nip portion is formed, wherein an annular conductive member provided in a longitudinal end portion of the metal core is in contact with the exposed portion of the heating rotating member while elastically deformed, and wherein in a state where the roller is not mounted to the fixing device, an outer diameter of the conductive member is smaller than an outer diameter of the elastic portion.
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公开(公告)号：US11947280B2
公开(公告)日：2024-04-02
申请号：US17938099
申请日：2022-10-05
发明人： Kazuhiro Funatani , Masatake Tanaka , Kentaro Yamawaki , Kenichi Iida , Shinsuke Kobayashi , Kensuke Umeda , Takanori Watanabe , Ai Suzuki
CPC分类号： G03G15/0865 , G03G9/0821 , G03G9/09328 , G03G15/0856 , G03G15/0877 , G03G15/0889
摘要： A mechanism that enables developer replenishment by a simpler structure and a mechanism that enables more user-friendly developer replenishment are provided. An attachment port to which a developer supply bottle containing a developer stored therein is detachably attachable is disposed in an interior of an image forming apparatus. The developer supply bottle can be attached when the cover is in an open state. According to this image forming apparatus, when the developer supply bottle is attached to the attachment port, the developer inside the developer supply bottle moves into a developer housing chamber by its own weight.
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公开(公告)号：US20230418192A1
公开(公告)日：2023-12-28
申请号：US18462197
申请日：2023-09-06
发明人： Ai Suzuki , Osamu Sasaoka , Kensuke Umeda , Shinsuke Kobayashi
IPC分类号： G03G15/20
CPC分类号： G03G15/2028 , G03G15/2064 , G03G2215/00548
摘要： An image forming apparatus includes an image forming unit, a fixing unit, first and second rotating members, and a discharge unit to discharge a recording material to an outside. The fixing unit fixes an image from the image forming unit onto the recording material. The first rotating member comes into contact with and guides the image bearing recording material, and is driven to rotate by conveyance of the recording material. The second rotating member comes into contact with the image bearing recording material more on a downstream side than the first rotating member in a conveyance direction of the recording material, guides the recording material, and is driven to rotate by conveyance of the recording material. The first rotating member does not perform swinging motion by coming into contact with the recording material, and the second rotating member performs swinging motion by coming into contact with the recording material.
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公开(公告)号：US20230324825A1
公开(公告)日：2023-10-12
申请号：US18335237
申请日：2023-06-15
发明人： Shinsuke Kobayashi , Kensuke Umeda , Ai Suzuki , Kazuhiro Funatani , Shuichi Tetsuno , Toshihiko Takayama , Jun Hara
CPC分类号： G03G15/0266 , G03G15/1675 , G03G15/065 , G03G15/0225 , G03G21/0064
摘要： An image forming apparatus includes a photosensitive member, a charging member, an electrostatic image forming portion, a developing member, a transfer member, a transfer voltage source, a brush member, a brush voltage source, and a controller capable of executing a cleaning operation. The controller carries out control so that the cleaning operation includes a first operation in which a potential difference is formed between the transfer member and the photosensitive member so that toner charged to a normal charge polarity is moved from the transfer member toward the photosensitive member, and a second operation in which a potential difference is formed between the brush member and the photosensitive member so that the toner charged to the normal charge polarity is moved from the photosensitive member toward the brush member.
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公开(公告)号：US11782365B2
公开(公告)日：2023-10-10
申请号：US18057058
申请日：2022-11-18
发明人： Ai Suzuki , Osamu Sasaoka , Kensuke Umeda , Shinsuke Kobayashi
IPC分类号： G03G15/20
CPC分类号： G03G15/2028 , G03G15/2064 , G03G2215/00548
摘要： An image forming apparatus includes an image forming unit, a fixing unit, first and second rotating members, and a discharge unit to discharge a recording material to an outside. The fixing unit fixes an image from the image forming unit onto the recording material. The first rotating member comes into contact with and guides the image bearing recording material, and is driven to rotate by conveyance of the recording material. The second rotating member comes into contact with the image bearing recording material more on a downstream side than the first rotating member in a conveyance direction of the recording material, guides the recording material, and is driven to rotate by conveyance of the recording material. The first rotating member does not perform swinging motion by coming into contact with the recording material, and the second rotating member performs swinging motion by coming into contact with the recording material.
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公开(公告)号：US11656568B2
公开(公告)日：2023-05-23
申请号：US17657158
申请日：2022-03-30
发明人： Ai Suzuki , Kensuke Umeda , Shinsuke Kobayashi
CPC分类号： G03G15/5062 , G06K15/12 , G03G2215/00029
摘要： An image forming apparatus includes a setting unit configured to set an operation mode, and a processing unit configured to perform image processing on image data according to the operation mode. In a case when a first mode is set, the image processing includes determining, in the image data, one or more target pixels having a gradation value equal to or higher than a first threshold value, and one or more adjacent pixels that are different from the one or more target pixels and adjacent to the one or more target pixels, setting a first gradation value lower than the first threshold value as a gradation value of the one or more target pixels, and setting a second gradation value higher than the first gradation value as a gradation value of the one or more adjacent pixels.
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公开(公告)号：US20230079216A1
公开(公告)日：2023-03-16
申请号：US18057058
申请日：2022-11-18
发明人： Ai Suzuki , Osamu Sasaoka , Kensuke Umeda , Shinsuke Kobayashi
IPC分类号： G03G15/20
摘要： An image forming apparatus includes an image forming unit, a fixing unit, first and second rotating members, and a discharge unit to discharge a recording material to an outside. The fixing unit fixes an image from the image forming unit onto the recording material. The first rotating member comes into contact with and guides the image bearing recording material, and is driven to rotate by conveyance of the recording material. The second rotating member comes into contact with the image bearing recording material more on a downstream side than the first rotating member in a conveyance direction of the recording material, guides the recording material, and is driven to rotate by conveyance of the recording material. The first rotating member does not perform swinging motion by coming into contact with the recording material, and the second rotating member performs swinging motion by coming into contact with the recording material.
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公开(公告)号：US20230045444A1
公开(公告)日：2023-02-09
申请号：US17938099
申请日：2022-10-05
发明人： Kazuhiro Funatani , Masatake Tanaka , Kentaro Yamawaki , Kenichi Iida , Shinsuke Kobayashi , Kensuke Umeda , Takanori Watanabe , Ai Suzuki
摘要： A mechanism that enables developer replenishment by a simpler structure and a mechanism that enables more user-friendly developer replenishment are provided. An attachment port to which a developer supply bottle containing a developer stored therein is detachably attachable is disposed in an interior of an image forming apparatus. The developer supply bottle can be attached when the cover is in an open state. According to this image forming apparatus, when the developer supply bottle is attached to the attachment port, the developer inside the developer supply bottle moves into a developer housing chamber by its own weight.
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公开(公告)号：US20220317612A1
公开(公告)日：2022-10-06
申请号：US17657158
申请日：2022-03-30
发明人： Ai Suzuki , Kensuke Umeda , Shinsuke Kobayashi
摘要： An image forming apparatus includes: a setting unit configured to set an operation mode; and a processing unit configured to perform image processing on image data according to the operation mode. In a case where a first mode is set, the image processing includes determining, in the image data, one or more target pixels having a gradation value equal to or higher than a first threshold value, and one or more adjacent pixels that are different from the one or more target pixels and adjacent to the one or more target pixels, setting a first gradation value lower than the first threshold value as a gradation value of the one or more target pixels, and setting a second gradation value higher than the first gradation value as a gradation value of the one or more adjacent pixels.
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