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公开(公告)号：US11550241B1
公开(公告)日：2023-01-10
申请号：US17665075
申请日：2022-02-04
发明人： Tomoaki Yoshioka , Mitsuaki Kuroda
摘要： An image forming apparatus includes: a transfer cylinder that is supported on an image forming apparatus body and rotates; a rotating member that is coaxial with the transfer cylinder and rotates integrally with the transfer cylinder; a circulating member that is provided with a holding part that holds a front end portion of a recording medium, is suspended around the rotating member, and transports the recording medium by circulating as the rotating member rotates; a transfer unit that is supported on the image forming apparatus body and has a transfer belt that transfers an image on a recording medium transported by the circulating member by sandwiching the recording medium together with the transfer cylinder at a nip position; a first image forming part that is supported on the image forming apparatus body and forms the image on the transfer belt; and a second image forming part that is supported on the image forming apparatus body at a position lower than the first image forming part and forms the image on the transfer belt. Mass of the second image forming part is larger than mass of the first image forming part.
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22.发明申请公开(公告)号：US20230004105A1
公开(公告)日：2023-01-05
申请号：US17756569
申请日：2020-12-14
发明人： Mitsuhiro OOTA
IPC分类号： G03G15/16
摘要： An intermediate transfer medium according to the present disclosure includes a substrate and a transfer layer including at least a receiving layer, in which a logarithmic damping ratio ΔE determined by subjecting the receiving layer to rigid-body pendulum measurement at 70° C. is 0.10 or more.
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公开(公告)号：US11531295B1
公开(公告)日：2022-12-20
申请号：US17493807
申请日：2021-10-04
发明人： Ryohei Yoshikawa , Tomotake Inagaki
摘要： A fixing belt includes, in the following order: a resin base material layer; an elastic layer; and a release layer, in which the elastic layer contains an elastic material and an aggregate in which plural fibrous carbons are entangled with each other, and a maximum diameter of the aggregate is 15% or less of a film thickness of the elastic layer.
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公开(公告)号：US11531291B2
公开(公告)日：2022-12-20
申请号：US17494363
申请日：2021-10-05
发明人： Ryou Sakaguchi , Yuya Ohta , Akinobu Nishikata
摘要： An image forming apparatus includes an image forming portion, a rotatable intermediary transfer belt, a plurality of stretching rollers, an outer roller, a moving mechanism, and a controller. In a case that a basis weight of a first recording material is a first basis weight and a basis weight of a second recording material is a second basis weight greater than the first basis weight, a position of the inner roller is a second position when the toner image is transferred onto the second recording material, and in a case that the basis weight of the first recording material and the basis weight of the second recording material are the second basis weight, the position of the inner roller is a first position when the toner image is transferred onto the second recording material.
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公开(公告)号：US11526103B2
公开(公告)日：2022-12-13
申请号：US17526171
申请日：2021-11-15
发明人： Hiroki Tanaka , Satoru Motohashi , Nobuo Oshima , Akihisa Matsukawa , Katsuichi Abe , Takayuki Namiki
摘要： An image forming apparatus includes a first image forming portion, a second image forming portion, a belt, a charging voltage applying portion, and a transfer voltage applying portion. With respect to a movement direction of a recording material, the first image forming portion is provided upstream of the second image forming portion. In an image forming operation, a potential difference between a first transfer voltage and a potential at a first transfer portion, which is formed on a first image bearing member and does not form the image, is greater than a potential difference between a second transfer voltage and a potential at a second transfer portion, which is formed on a second image bearing member and does not form an image.
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公开(公告)号：US11520256B2
公开(公告)日：2022-12-06
申请号：US17677639
申请日：2022-02-22
发明人： Masayuki Yamada
IPC分类号： G03G15/16
摘要： A transfer unit includes a first roller, a second roller, a first bearing member, a second bearing member, a roller holder, a first urging member, a second urging member, a first switching cam, a second switching cam, and a driving mechanism. The first and second switching cams have first and second guide holes with which first and second engaging portions formed on the first and second bearing members engage respectively. By rotating the roller holder, one of the first and second rollers is arranged opposite an image carrying member and, by rotating the first and second switching cams to change engaging positions of the first and second engaging portions respectively, the first or second roller is arranged either at a reference position at which it is kept in pressed contact with the image carrying member or at a released position.
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公开(公告)号：US11520254B2
公开(公告)日：2022-12-06
申请号：US17578387
申请日：2022-01-18
发明人： Masaru Takagi , Masayuki Yamada , Yuya Shimohora , Takehiro Sato
IPC分类号： G03G15/16
摘要： A transfer unit includes, as transfer rollers, first and second rollers of which the second has an elastic layer larger in an axial direction than the first, first and second bearing members, a roller holder, first and second urging members, a switching cam, a driving mechanism, and a first pre-transfer guide. By rotating the roller holder, the first or second roller is arranged opposite an image carrier and, by rotating the switching cam, the first or second roller arranged opposite the image carrier is arranged selectively either at a reference position where the first or second roller is in pressed contact with the image carrier or at a released position where the first or second roller lies away from the image carrier. With the first or second roller arranged at the reference position, the first pre-transfer guide is arranged at a first guide position.
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公开(公告)号：US20220382196A1
公开(公告)日：2022-12-01
申请号：US17493807
申请日：2021-10-04
发明人： Ryohei YOSHIKAWA , Tomotake INAGAKI
摘要： A fixing belt includes, in the following order: a resin base material layer; an elastic layer; and a release layer, in which the elastic layer contains an elastic material and an aggregate in which plural fibrous carbons are entangled with each other, and a maximum diameter of the aggregate is 15% or less of a film thickness of the elastic layer.
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公开(公告)号：US20220373936A1
公开(公告)日：2022-11-24
申请号：US17468867
申请日：2021-09-08
发明人： Satoya Sugiura , Masato Ono , Shogo Hayashi , Daisuke Tanemura , Masayuki Seko
摘要： An image forming apparatus includes a photosensitive member, a charging unit that charges a surface of the photosensitive member, an electrostatic image formation unit that forms an electrostatic image on the charged surface of the photosensitive member, a developing unit that includes a developer including a toner and develops the electrostatic image formed on the surface of the photosensitive member with the developer to form a toner image, an intermediate transfer body including a surface layer, the surface layer including an acrylic resin and a fluorine-containing polyether, a first transfer unit that transfers the toner image onto a surface of the intermediate transfer body as first transfer, a second transfer unit that transfers the toner image transferred on the surface of the intermediate transfer body to a recording medium as second transfer, and an intermediate transfer body cleaning unit that includes a cleaning blade including a tetrahedral amorphous carbon layer disposed on a surface of a contact portion of the cleaning blade, the contact portion being arranged to contact with the intermediate transfer body, and removes a residual toner by bringing the cleaning blade into contact with the intermediate transfer body. Linear velocities of the intermediate transfer body and the photosensitive member are adjusted to satisfy a requirement (1) below: Requirement (1): 0.3≤|Linear velocity of Intermediate transfer body−Linear velocity of Photosensitive member|/Linear velocity of Intermediate transfer body×100≤1.5
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公开(公告)号：US11500309B2
公开(公告)日：2022-11-15
申请号：US17347900
申请日：2021-06-15
IPC分类号： G03G15/16
摘要： An image forming apparatus includes an image forming portion, a belt, a plurality of stretching rollers including an inner roller and an upstream roller, an outer member, an urging member, a first position changing mechanism, a storing portion, a controller, and an operating portion. The controller controls the first position changing mechanism on the basis of a kind of a recording material on which an image is formed, first set information stored in the storing portion, and first input information for changing setting of a position of the urging member inputted to the controller through the operating portion.
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