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公开(公告)号：US12124183B2
公开(公告)日：2024-10-22
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 , G03G15/0225 , G03G15/065 , G03G15/1675 , 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：US11829105B2
公开(公告)日：2023-11-28
申请号：US17145896
申请日：2021-01-11
发明人： Ai Suzuki , Kazuhiro Funatani , Kensuke Umeda , Shinsuke Kobayashi , Masamichi Sato , Masatake Tanaka
CPC分类号： G03G9/09328 , G03G9/0935 , G03G9/09307 , G03G15/206 , G03G15/2064
摘要： An image forming method comprising a fixing step of fixing a toner image to a recording material while nipping and conveying the recording material, on which the toner image has been formed, by a fixing nip portion, wherein the toner comprises a toner particle comprising a toner base particle and an organosilicon polymer on a surface thereof, the organosilicon polymer has a structure represented by R—SiO3/2, where R is an C1 to C6 alkyl group or a phenyl group, the organosilicon polymer has convex portions formed on an outer surface thereof, and the convex portions satisfy specific relationships, and a contact pressure σ (MPa) of the pressure member and the fixing film and a storage elastic modulus G (MPa) of the toner at a temperature of a surface of the fixing film when the recording material is nipped and conveyed by the fixing nip portion satisfy specific relationships.
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公开(公告)号：US11720046B2
公开(公告)日：2023-08-08
申请号：US17845073
申请日：2022-06-21
CPC分类号： G03G21/0064 , G03G15/0131 , G03G15/0233 , G03G15/0808 , G03G21/10 , G03G2215/022
摘要： Provided are an image bearing member; a charging member that charges the image bearing member; an exposure unit that exposes the image bearing member; a developing unit that develops an electrostatic latent image as a developer image by supplying a developer, charged to regular polarity, to the image bearing member; a transfer member that transfers the developer image to a transfer-receiving body; and a collecting member that collects a deposit on the image bearing member downstream of a transfer portion of the image bearing member at which the developer image is transferred to the transfer-receiving body by the transfer member, and upstream of a charging portion of the image bearing member charged by the charging member, in a rotation direction of the image bearing member. After transfer of the developer image to the transfer-receiving body, the developer remaining on the image bearing member is collected by the developing unit.
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公开(公告)号：US20220197175A1
公开(公告)日：2022-06-23
申请号：US17515636
申请日：2021-11-01
发明人： Shinsuke Kobayashi , Kensuke Umeda , Ai Suzuki , Kazuhiro Funatani , Shuichi Tetsuno , Toshihiko Takayama , Jun Hara
摘要： An image forming apparatus includes a photosensitive member, a charging member, 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：US20210382430A1
公开(公告)日：2021-12-09
申请号：US17335158
申请日：2021-06-01
摘要： Provided are an image bearing member; a charging member that charges the image bearing member; an exposure unit that exposes the image bearing member; a developing unit that develops an electrostatic latent image as a developer image by supplying a developer, charged to regular polarity, to the image bearing member; a transfer member that transfers the developer image to a transfer-receiving body; and a collecting member that collects a deposit on the image bearing member downstream of a transfer portion of the image bearing member at which the developer image is transferred to the transfer-receiving body by the transfer member, and upstream of a charging portion of the image bearing member charged by the charging member, in a rotation direction of the image bearing member. After transfer of the developer image to the transfer-receiving body, the developer remaining on the image bearing member is collected by the developing unit.
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公开(公告)号：US20170308025A1
公开(公告)日：2017-10-26
申请号：US15496785
申请日：2017-04-25
发明人： Ai Suzuki , Masashi Tanaka , Shoichiro Ikegami , Kensuke Umeda , Sho Taguchi
IPC分类号： G03G15/00
CPC分类号： G03G15/6564 , G03G15/0415 , G03G15/5008
摘要： An image forming apparatus includes a photosensitive member; an exposure portion configured to expose the photosensitive member to light depending on image information to form a latent image on the photosensitive member; a developing portion configured to develop the latent image into a toner image with toner; and a transfer portion configured to transfer the toner image from the photosensitive member onto a recording material. The image forming apparatus changes a surface movement speed of the photosensitive member at timing prior to predetermined timing, when a moving speed of a recording material at the transfer portion changes, by a predetermined time.
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公开(公告)号：US11960232B2
公开(公告)日：2024-04-16
申请号：US18094645
申请日：2023-01-09
CPC分类号： G03G21/0035 , G03G15/5008
摘要： An image forming apparatus includes a rotatable photosensitive member, a charging member, a developing device, a transfer member, a brush, a driving source and a control portion. The control portion controls the driving source to execute an image forming process in which image formation on the recording material is executed and a non-image-forming process in which the photosensitive member is driven to rotate other than in the image forming process. The non-image-forming process between a first recording material and a second recording material, to which the image formation is executed following the first recording material, is defined as a first non-image-forming process, and the non-image-forming process between the second recording material and a third recording material is defined as a second non-image-forming process. The control portion determines a time of the second non-image-forming process based on history information correlating with a usage amount of the photosensitive member and a time of the first non-image-forming process.
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公开(公告)号：US20230341807A1
公开(公告)日：2023-10-26
申请号：US18343901
申请日：2023-06-29
CPC分类号： G03G21/0064 , G03G21/10 , G03G15/0808 , G03G15/0131 , G03G15/0233 , G03G2215/022
摘要： Provided are an image bearing member; a charging member that charges the image bearing member; an exposure unit that exposes the image bearing member; a developing unit that develops an electrostatic latent image as a developer image by supplying a developer, charged to regular polarity, to the image bearing member; a transfer member that transfers the developer image to a transfer-receiving body; and a collecting member that collects a deposit on the image bearing member downstream of a transfer portion of the image bearing member at which the developer image is transferred to the transfer-receiving body by the transfer member, and upstream of a charging portion of the image bearing member charged by the charging member, in a rotation direction of the image bearing member. After transfer of the developer image to the transfer-receiving body, the developer remaining on the image bearing member is collected by the developing unit.
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公开(公告)号：US11703775B2
公开(公告)日：2023-07-18
申请号：US17515636
申请日：2021-11-01
发明人： Shinsuke Kobayashi , Kensuke Umeda , Ai Suzuki , Kazuhiro Funatani , Shuichi Tetsuno , Toshihiko Takayama , Jun Hara
CPC分类号： G03G15/0266 , G03G15/0225 , G03G15/065 , G03G15/1675 , 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：US20220413423A1
公开(公告)日：2022-12-29
申请号：US17846989
申请日：2022-06-22
摘要： An image forming apparatus controls the number of rotations of a photosensitive drum based on information related to the use of the photosensitive drum and a suspension time in a rotation operation of rotating the photosensitive drum after a lapse of the suspension time between a first image forming operation of forming an image on a transfer material and a second image forming operation performed after the first image forming operation.
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