公开(公告)号：US11874615B2

公开(公告)日：2024-01-16

申请号：US17859669

申请日：2022-07-07

申请人： KYOCERA Document Solutions Inc.

发明人： Tamotsu Shimizu ,  Akihiro Watanabe ,  Ryo Yamada ,  Uto Syu ,  Yuji Toyota ,  Yasuhiro Tauchi

IPC分类号： G03G15/08 ,  G03G15/09

CPC分类号： G03G15/0891 ,  G03G15/081 ,  G03G15/0921 ,  G03G2215/0609

摘要： A developing device includes a developing container, a first stirring conveyance member, a second stirring conveyance member, a developer carrying member including a developing sleeve and a magnet, and a regulation member. The regulation pole in the magnet has a region extending over 10° or more in which a maximum value of a vertical magnetic force is not more than 65 [mT] and a vertical magnetic force gradient is not more than 0.3 [mT/°]. A peak position of the vertical magnetic force gradient of the regulation pole is arranged at a position opposed to the second stirring conveyance member, and when a value of the vertical magnetic force gradient and a value of the vertical magnetic force at the peak position of the vertical magnetic force gradient are indicated as A [mT/°] and K [mT], respectively, A≥2.8 and A×K≥62.5 are satisfied.

公开(公告)号：US11150578B2

公开(公告)日：2021-10-19

申请号：US16995574

申请日：2020-08-17

申请人： KYOCERA Document Solutions Inc.

发明人： Minoru Wada ,  Yuji Kamiyama ,  Ikuo Makie ,  Yu Sasaki ,  Yukari Ota ,  Ryo Yamada

IPC分类号： G03G15/08 ,  G03G21/20

摘要： A developing device includes a developing container, a first stirring member and a second stirring member, and a developing roller. The developing container includes a first stirring chamber, a second stirring chamber, and a communication portion. The first stirring member includes a reverse spiral vane that conveys a developer in a direction reverse to a circulation direction. An air discharge duct is formed on a wall portion of the first stirring chamber opposed to the reverse spiral vane and in an area excluding the communication portion and discharges air from the first stirring chamber to an outside of the developing container via an air discharge port at a distal end of the air discharge duct. A filtration portion is disposed in the air discharge duct adjacently to the air discharge port and restricts leakage of the developer through the air discharge port.

公开(公告)号：US11112730B2

公开(公告)日：2021-09-07

申请号：US17031152

申请日：2020-09-24

申请人： KYOCERA Document Solutions Inc.

发明人： Ryo Yamada ,  Yuji Kamiyama ,  Yu Sasaki ,  Ikuo Makie

IPC分类号： G03G15/08

摘要： A developing device includes a developer container, a developer carrier, and a stirring/conveying member. The developer container stores developer containing toner. The developer carrier carries on its surface the toner in the developer container. The stirring/conveying member includes a rotary shaft rotatably supported on the developer container and a stirring blade formed around the outer circumferential face of the rotary shaft and stirs and conveys the developer in the developer container. The stirring/conveying member to be used can be selected from a plurality of types of stirring/conveying members with rotary shafts with different shaft diameters.