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公开(公告)号：US11988975B2
公开(公告)日：2024-05-21
申请号：US17888020
申请日：2022-08-15
发明人： Yasushi Takeuchi , Yukari Shibuya , Tatsuya Inoue
CPC分类号： G03G15/0258 , G03G21/0023
摘要： An image forming apparatus includes a rotatable photosensitive member, a charging member, a developing device, a blade, a detecting portion, and a controller. The controller causes the photosensitive member to rotate through one full circumference or more on the following conditions during a predetermined operation: (i) a voltage which is a discharge start voltage or more is applied to the charging member, and (ii) an operation condition of the developing device is a first condition on which an amount of fog toner deposited from the developer carrying member on the photosensitive member is less than an amount of the fog toner in a second condition which is an operation condition of the developing device during a sheet interval before the image formation during the continuous image formation is interrupted.
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2.发明公开公开(公告)号：US20240045353A1
公开(公告)日：2024-02-08
申请号：US18188431
申请日：2023-03-22
发明人： Fuyuki KANO
IPC分类号： G03G15/02
CPC分类号： G03G15/0258
摘要： A cleaning body includes a core, and a foam elastic layer that is disposed by winding a strip-shaped foam elastic member around an outer peripheral surface of the core in a helical shape from one end to the other end of the core, in which the foam elastic layer has cells and a cell skeleton that is a partition wall present between the cells, the cell skeleton has a tip portion protruding on a contact surface of the foam elastic layer with a body to be cleaned, and a diameter of the tip portion is equal to or less than 50 μm, and in the cells, a ratio Dy/Dx of an average cell diameter Dy in a radial direction of the core to an average cell diameter Dx in a width direction of the foam elastic layer is equal to or greater than 1.2 and equal to or less than 2.1.
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公开(公告)号：US11822284B2
公开(公告)日：2023-11-21
申请号：US17837597
申请日：2022-06-10
发明人： Yuki Tashiro
CPC分类号： G03G21/206 , G03G15/0258 , G03G2221/1645
摘要： An image forming apparatus includes a first image forming unit, a second image forming unit, and an intake unit. The intake unit includes an intake duct provided at one side relative to the first and the second image forming units in an arrangement direction of the plurality of image forming units and configured to take in air outside the image forming apparatus from an intake port, a first fan configured to take in air from a first communication port, and a second fan configured to take in air from a second communication port. The intake unit branches air taken in from the intake duct to the air taken in from the first communication port by the first fan and the air taken in from the second communication port by the second fan, and blows the air to each of the first image forming unit and the second image forming unit.
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公开(公告)号：US11796934B2
公开(公告)日：2023-10-24
申请号：US17975701
申请日：2022-10-28
发明人： Shinya Yasuda
CPC分类号： G03G15/0258 , G03G21/1814 , G03G21/1842
摘要： In a case where a cleaning member is located at a cleaning position in attachment of a process cartridge to an image forming apparatus, a stopper located at a first position butts against the process cartridge guided in a direction of attachment by a guide portion such that the process cartridge is disabled from being attached to the image forming apparatus, and in a case where the cleaning member is located at a retraction position in attachment of the process cartridge to the image forming apparatus, a lever portion moves due to a press by a cleaning unit and the stopper moves from the first position to a second position such that the process cartridge is enabled to be attached to the image forming apparatus.
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公开(公告)号：US20190082074A1
公开(公告)日：2019-03-14
申请号：US16129561
申请日：2018-09-12
发明人： Ryo Takayama
CPC分类号： H04N1/121 , G03G15/0258 , G03G15/6511 , G03G15/6573 , G03G21/00 , H04N1/02815
摘要： An image reading device includes a feeder, a flexible transmission path, and a charge remover. The feeder conveys an image sensor in a forward direction directed from a reading start position toward a reading end position, and a backward direction opposite thereto. The flexible transmission path extends from a connection portion that is electrically connected to the image sensor, to a specific location within a reading range between the reading start position and the reading end position, and curved the connection portion and the specific location. The charge remover includes a conductor which abuts on an upper surface of the flexible transmission path and is grounded. With a reciprocal movement of the image sensor, the charge remover moves between a stop position being away from the reading start position in the forward direction, and a position being on the reading end position side of the stop position.
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公开(公告)号：US20180299819A1
公开(公告)日：2018-10-18
申请号：US16014652
申请日：2018-06-21
发明人： Kengo YADA , Keigo NAKAJIMA , Yuichi MATSUSHITA , Hotaka KAKUTANI , Shota IRIYAMA , Atsushi OZAWA
CPC分类号： G03G21/0058 , G03G15/0225 , G03G15/0258
摘要： A cleaning roller includes a shaft and an elastic body. The shaft extends in an axial direction where a center axis of the shaft extends. The shaft defines a radial direction and has a circumferential surface. The elastic body is helically wound about the shaft and defines a helical direction. The elastic body has a widthwise dimension in a widthwise direction orthogonal to the helical direction and to the radial direction. The elastic body has a base end portion extending in the helical direction and a distal end portion extending in the helical direction. The base end portion is in contact with the circumferential surface and fixed thereto. The distal end portion has a sharp edge and is positioned farthest from the circumferential surface in the radial direction. The widthwise dimension is gradually reduced from the base end portion to the distal end portion in the radial direction.
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公开(公告)号：US20180224799A1
公开(公告)日：2018-08-09
申请号：US15942652
申请日：2018-04-02
发明人： Akihisa Matsukawa , Toshiki Okamura , Kuniaki Tamagaki , Takanori Watanabe , Hiroyoshi Iwayama , Makoto Tokudome , Hideo Kihara , Naoki Hayashi
CPC分类号： G03G21/1814 , G03G15/0258 , G03G21/0011 , G03G21/1676 , G03G21/169 , G03G21/1853
摘要： An image forming apparatus in which a developer bearing member is disposed below a cleaning member, which cleans a charging member, so as to overlap with the cleaning member when viewed in a vertical direction and includes a base body and an elastic layer covering the base body and having a width in a longitudinal direction of the developer bearing member that accommodates the entire region of the cleaning member in the longitudinal direction. In the longitudinal direction, the cleaning member is disposed at a position where the entire region thereof in the longitudinal direction is accommodated in the width of the elastic layer.
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公开(公告)号：US20180095377A1
公开(公告)日：2018-04-05
申请号：US15665818
申请日：2017-08-01
申请人： FUJI XEROX CO., LTD.
发明人： Yusuke KITAGAWA , Sadao OKANO , Yasuo TAKAYAMA , Akiko KIMURA
IPC分类号： G03G15/02
CPC分类号： G03G15/0225 , G03G15/0258 , G03G15/0291 , G03G2215/027
摘要： A charging device includes a first cleaning member that cleans a surface of a charging wire by moving along the wire while being in contact with the wire at a first side; and a second cleaning member that cleans the surface of the wire by moving while being in contact with the wire at a second side, and moving relative to the first cleaning member in a crossing direction that crosses a wire length direction.
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公开(公告)号：US09817366B2
公开(公告)日：2017-11-14
申请号：US14635373
申请日：2015-03-02
申请人： Konica Minolta, Inc.
发明人： Keiki Katsumata , Yuichi Omori
CPC分类号： G03G21/206 , G03G15/02 , G03G15/0258
摘要： An image forming apparatus includes: a charging section configured to charge a surface of an image bearing member; an air-intake duct having an air-supply port, and configured to guide air sucked from an outside to the charging section through the air-supply port; an exhaust duct having an air-intake port, and configured to suck air around the charging section through the air-intake port and eject the air thus sucked. The air-intake duct has a configuration in which air guided to the charging section through the air-supply port flows in a direction orthogonal to a longitudinal direction of the charging section, or flows toward a center of the charging section in the longitudinal direction.
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公开(公告)号：US20170248865A1
公开(公告)日：2017-08-31
申请号：US15222194
申请日：2016-07-28
申请人： FUJI XEROX CO., LTD.
发明人： Kazuma TERANISHI
IPC分类号： G03G15/02
CPC分类号： G03G15/0266 , G03G15/0225 , G03G15/0258
摘要： An image forming apparatus includes an image forming unit that forms an image by forming an electrostatic latent image on an image carrier, which is charged by a charging member to which a normal voltage is applied, on the basis of image information and by supplying a developer to the image carrier; an application unit that applies a special alternating-current voltage to the charging member, the special alternating-current voltage at least having an amplitude that is greater than that of an alternating-current voltage that is applied when forming the image; and an instruction unit that instructs the application unit to apply the special alternating-current voltage at a specific time in a period other than an image forming period during which the image forming unit forms the image.
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