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1. 发明授权

US11474442B2 Electrophotographic apparatus, process cartridge, and cartridge set 有权
公开(公告)号：US11474442B2
公开(公告)日：2022-10-18
申请号：US17071227
申请日：2020-10-15
申请人： CANON KABUSHIKI KAISHA
发明人： Kosuke Fukudome , Tomohiro Unno , Dai Nozaki , Kozue Uratani , Yuta Komiya , Masahiro Kurachi , Kazuhiro Yamauchi , Motonari Ito
IPC分类号： G03G15/02 , G03G9/08 , G03G9/087 , G03G15/054
摘要： An electrophotographic apparatus having an electrophotographic photosensitive member, a charging unit, and a developing unit for forming a toner image on a surface of the electrophotographic photosensitive member, wherein the charging unit has a conductive member disposed to be contactable with the electrophotographic photosensitive member; a conductive layer at the surface of the conductive member has a matrix and a plurality of domains dispersed in the matrix; at least a portion of the domains is exposed at the outer surface of the conductive member; the outer surface of the conductive member is constituted of at least the matrix and the domains; a volume resistivity R1 of the matrix is greater than 1.00×1012 Ω·cm; a volume resistivity R2 of the domains is smaller than R1; the developing unit contains the toner; and a dielectric loss tangent of the toner is at least 0.0027.

2. 发明申请

US20180314186A1 DEVELOPING APPARATUS, CARTRIDGE, AND IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：US20180314186A1
公开(公告)日：2018-11-01
申请号：US16027941
申请日：2018-07-05
申请人： CANON KABUSHIKI KAISHA
发明人： Motoki Adachi , Motonari Ito , Takanori Watanabe , Yusuke Usui
IPC分类号： G03G15/08 , G03G21/00
CPC分类号： G03G15/0812 , G03G21/0064
摘要： In a developing apparatus, a cartridge, and an image forming apparatus, the positions of a regulating section, an opening, a bottom section of a development chamber, and a bottom section of a storage chamber are in a specific positional relationship, an optical discharging section is provided in a specific position, or the structure of a regulating member is a specific structure.

3. 发明申请

US20180188667A1 DEVELOPING APPARATUS, CARTRIDGE, AND IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：US20180188667A1
公开(公告)日：2018-07-05
申请号：US15910160
申请日：2018-03-02
申请人： CANON KABUSHIKI KAISHA
发明人： Motoki Adachi , Motonari Ito , Takanori Watanabe , Yusuke Usui
IPC分类号： G03G15/08 , G03G21/00
CPC分类号： G03G15/0812 , G03G21/0064
摘要： In a developing apparatus, a cartridge, and an image forming apparatus, the positions of a regulating section, an opening, a bottom section of a development chamber, and a bottom section of a storage chamber are in a specific positional relationship, an optical discharging section is provided in a specific position, or the structure of a regulating member is a specific structure.

4. 发明申请

US20170075290A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20170075290A1
公开(公告)日：2017-03-16
申请号：US15260619
申请日：2016-09-09
申请人： CANON KABUSHIKI KAISHA
发明人： Takashi Hiramatsu , Motonari Ito , Hideo Kihara
IPC分类号： G03G15/02 , G03G15/30
CPC分类号： G03G21/0005 , G03G21/0064
摘要： An image forming apparatus includes a control portion configured to perform a cleaning operation including: a first step of causing a developer, which has a reversed polarity and is attracted to a surface of a charging roller, to have a normal polarity under a state in which the developer bearing member is separated from the image bearing member with the contact/separation unit; and a second step of collecting the developer, which has the normal polarity and is attracted to the surface of the image bearing member, to the developer bearing member, by rotating the image bearing member and the developer bearing member under a state in which the developer bearing member is brought into contact with the image bearing member with the contact/separation unit after performing the first step.
摘要翻译：图像形成装置包括被配置为执行清洁操作的控制部分，包括：第一步骤，使具有相反极性并被吸引到充电辊的表面的显影剂在其中具有正常极性的状态下显影剂承载部件与图像承载部件与接触/分离单元分离; 以及第二步骤，通过使图像承载部件和显影剂承载部件在显影剂载体和显影剂承载部件的状态下旋转，将具有正常极性并被吸引到图像承载部件的表面的显影剂收集到显影剂承载部件在执行第一步骤之后，承载部件与接触/分离单元与图像承载部件接触。

5. 发明申请

US20220187734A1 IMAGE FORMING APPARATUS 有权
公开(公告)号：US20220187734A1
公开(公告)日：2022-06-16
申请号：US17437987
申请日：2020-03-11
申请人： Canon Kabushiki Kaisha
发明人： Yuta Isobe , Kuniaki Tamagaki , Takashi Koyanagi , Akihisa Matsukawa , Ryosuke Kanai , Hiroki Tanaka , Motonari Ito , Kazuhisa Shida , Makoto Fukatsu
IPC分类号： G03G15/06 , G03G15/08 , G03G15/00 , G03G21/20
摘要： An image forming apparatus at least includes: an image bearing member; a developer container; a developer carrying member; and a controller that controls a power source that applies a voltage to the developer carrying member, wherein the developer carrying member has at least a base and a surface layer, the surface layer has an electron donating portion that mainly donates charge to the developer when the developer and the surface layer makes frictional contact to exchange charge and an electron accepting portion that mainly accepts charge from the developer, and the controller applies an AC voltage to the developer carrying member during a period in which an image forming operation is not performed and the developer carrying member is driven, the AC voltage being different from that applied during an image forming period.

6. 发明申请

US20170082945A1 DEVELOPING APPARATUS, CARTRIDGE, AND IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：US20170082945A1
公开(公告)日：2017-03-23
申请号：US15366206
申请日：2016-12-01
申请人： CANON KABUSHIKI KAISHA
发明人： Motoki Adachi , Motonari Ito , Takanori Watanabe , Yusuke Usui
IPC分类号： G03G15/08 , G03G21/18
CPC分类号： G03G15/0812 , G03G21/0064
摘要： A developing apparatus includes a developer bearing member configured to bear a developer on a surface, a regulating member that regulates layer thickness of the developer on the developer bearing member, and a developer conveying member. In addition, a frame has a development chamber in which the developer bearing member and the regulating member are provided, a storage chamber in which the conveying member is provided and the developer is stored, and an opening through which the developer passes into the development chamber. The developing apparatus collects the developer remaining on the developer bearing member into the storage chamber after the developer on the developer bearing member is transferred onto a transfer material. The regulating material includes a step portion that forms a gap between the regulating member and the developer bearing member.

7. 发明授权

US09547273B2 Image forming apparatus having simultaneous development and cleaning 有权
标题翻译：具有同时显影和清洁的图像形成装置
公开(公告)号：US09547273B2
公开(公告)日：2017-01-17
申请号：US14733082
申请日：2015-06-08
申请人： CANON KABUSHIKI KAISHA
发明人： Motonari Ito , Motoki Adachi , Satoshi Sunahara , Kuniaki Tamagaki
IPC分类号： G03G15/02 , G03G21/10 , G03G15/00
CPC分类号： G03G21/10 , G03G15/0233 , G03G15/505 , G03G2215/025
摘要： When an outer diameter of a charging member is defined as Hc, a ratio of the circumferential velocity of the charging member to the circumferential velocity of an image bearing member is defined as Rc, an outer diameter of a developer bearing member is defined as Hd, and a ratio of the circumferential velocity of the developer bearing member to the circumferential velocity of the image bearing member is defined as Rd, the relationship Hc/Rc≧Hd/Rd is satisfied.
摘要翻译：当充电构件的外径被定义为Hc时，充电构件的圆周速度与图像承载构件的圆周速度的比率被定义为Rc，显影剂承载构件的外径被定义为Hd，并且显影剂承载部件的圆周速度与图像承载部件的圆周速度的比率被定义为Rd，满足关系Hc /Rc≥Hd/ Rd。

8. 发明申请

US20150234315A1 DEVELOPING APPARATUS, CARTRIDGE, AND IMAGE FORMING APPARATUS 有权
标题翻译：开发设备，卡盒和图像形成装置
公开(公告)号：US20150234315A1
公开(公告)日：2015-08-20
申请号：US14624654
申请日：2015-02-18
申请人： CANON KABUSHIKI KAISHA
发明人： Motoki Adachi , Motonari Ito , Takanori Watanabe , Yusuke Usui
IPC分类号： G03G15/08
CPC分类号： G03G15/0812 , G03G21/0064
摘要： In a developing apparatus, a cartridge, and an image forming apparatus, the positions of a regulating section, an opening, a bottom section of a development chamber, and a bottom section of a storage chamber are in a specific positional relationship, an optical discharging section is provided in a specific position, or the structure of a regulating member is a specific structure.
摘要翻译：在显影装置，盒和图像形成装置中，调节部，开口，显影室的底部和存储室的底部的位置具有特定的位置关系，光放电部分设置在特定位置，或者调节构件的结构是特定结构。

9. 发明授权

US10802419B2 Method of manufacturing developer container, developer container, developing apparatus, process cartridge, and image forming apparatus 有权
公开(公告)号：US10802419B2
公开(公告)日：2020-10-13
申请号：US15956223
申请日：2018-04-18
申请人： CANON KABUSHIKI KAISHA
发明人： Taku Watanabe , Masahito Kato , Go Shindo , Atsushi Toda , Katsuichi Abe , Motonari Ito , Akira Suzuki , Junichi Matsumura , Naoki Matsumaru
IPC分类号： G03G15/08 , B29C45/14 , G03G21/18 , B29L31/00 , B29K623/00 , B29K507/04 , B29K625/00 , B29K25/00
摘要： A method of manufacturing a developer container including a frame configured to define a developer containing portion, a first electrode, and a second electrode arranged on a surface of the frame and having a surface opposed to the first electrode, a developer amount in the developer containing portion being detected based on a capacitance between the first electrode and the second electrode, the method including: holding a conductive resin member constituting the second electrode on a mold configured to mold the frame, a surface of the conductive resin member being in contact with a surface of the mold configured to mold a surface of the frame on a side of the developer containing portion; injecting a resin to be formed into the frame, into the mold on which the conductive resin member is held; and curing the resin to form the frame to which the second electrode is fixed.

10. 发明授权

US10281838B2 Developing apparatus having a layer thickness regulating member, cartridge, and image forming apparatus 有权
公开(公告)号：US10281838B2
公开(公告)日：2019-05-07
申请号：US16027941
申请日：2018-07-05
申请人： CANON KABUSHIKI KAISHA
发明人： Motoki Adachi , Motonari Ito , Takanori Watanabe , Yusuke Usui
IPC分类号： G03G15/08 , G03G21/00
摘要： A developing apparatus includes a developer bearing member bearing a developer on a surface in a developing operation, a regulating member configured to regulate layer thickness of the developer borne on the developer bearing member, a development chamber provided with the developer bearing member and the regulating member and having an opening, a storage chamber to store the developer, and a conveying member to convey the developer stored in the storage chamber to the development chamber through the opening. When the developing operation is performed, a bottom section of the development chamber is located above a bottom section of the storage chamber in a vertical direction, and a contact region of the developer bearing member in contact with the regulating member is located directly above the opening in the vertical direction.

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