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1. 发明授权

US09983513B2 Developing device and image forming apparatus including the same 有权
公开(公告)号：US09983513B2
公开(公告)日：2018-05-29
申请号：US15585526
申请日：2017-05-03
申请人： KYOCERA Document Solutions Inc.
发明人： Teruhiko Nagashima , Hiromu Matsumoto , Hidenori Takenaka
IPC分类号： G03G15/08 , G03G15/09
CPC分类号： G03G15/0891 , G03G15/0898 , G03G15/09 , G03G21/206
摘要： A developing device includes a housing, a developing roller, a developer conveying section, and a conveying screw. The developing roller includes a stationary magnet, and a sleeve rotatable around the stationary magnet. The developing roller faces a photoconductive drum. The developer conveying section is disposed below the developing roller for circularly conveying developer therein. The conveying screw conveys developer to supply developer to the developing roller. The stationary magnet includes a separation pole for producing a magnetic field that causes separation of developer from the sleeve. The housing includes a standing wall disposed downstream of the developing position in a rotational direction of the sleeve and facing the developing roller. The standing wall is formed with at least one opening that faces the separation pole in a horizontal direction. The developing device further includes at least one filter section covering the at least one opening.

2. 发明申请

US20180074433A1 DEVELOPING DEVICE 审中-公开
公开(公告)号：US20180074433A1
公开(公告)日：2018-03-15
申请号：US15698461
申请日：2017-09-07
申请人： CANON KABUSHIKI KAISHA
发明人： Tomoyuki Sakamaki
IPC分类号： G03G15/09
CPC分类号： G03G15/0812 , G03G15/0893 , G03G15/09 , G03G2215/0607 , G03G2215/0609
摘要： Only both end portions of a developer regulating member are supported by a developing container such that the developer regulating member cannot rotate, a size of an area of a cross section orthogonal to a rotational axis of a developer bearing member of the developer regulating member is smaller than 28 mm2, a magnitude of second moment of area in a normal direction of the developer bearing member with respect. to a centroid of the cross section orthogonal to the rotational axis of the developer bearing member of the developer regulating member is larger than 25 mm4, and a magnitude of a second moment of area in a tangent direction of the developer bearing member with respect to the centroid of the cross section orthogonal to the rotational axis of the developer bearing member of the developer regulating member is larger than 70 mm4.

3. 发明授权

US09915893B2 Developing device, image forming apparatus including developing device, fitting method of coil board to developing device 有权
公开(公告)号：US09915893B2
公开(公告)日：2018-03-13
申请号：US15331283
申请日：2016-10-21
申请人： KYOCERA Document Solutions Inc.
发明人： Yukiko Kotani
IPC分类号： G03G15/08 , G03G15/09
CPC分类号： G03G15/0865 , G03G15/0851 , G03G15/0863 , G03G15/09
摘要： A developing device includes a housing for housing therein a developer containing toner and magnetic carrier, and a first sensor including an oscillation circuit and a coil board which is part of the oscillation circuit and on which a coil pattern is formed. A fitting portion formed by recessing an outer surface of the housing is provided in the housing so as to allow the coil board to be fitted at a position closer to the developer than the outer surface of the housing. The coil board is fitted into the fitting portion.

4. 发明申请

US20170329266A1 IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：US20170329266A1
公开(公告)日：2017-11-16
申请号：US15495270
申请日：2017-04-24
申请人： CANON KABUSHIKI KAISHA
发明人： Toshihisa Yago
IPC分类号： G03G15/00 , G03G15/09
CPC分类号： G03G15/50 , G03G15/0189 , G03G15/0853 , G03G15/09 , G03G21/0029 , G03G21/007
摘要： Provided is an image forming apparatus, including: image forming units arranged side by side, each image forming unit having: a developing device forming a toner image; a magnetic permeability sensor detecting a toner density of a developer in the developing device; and a cleaning unit having a cleaning member which removes a toner remaining on an image bearing member, and a conductive support member which supports the cleaning member; an intermediate transfer member bearing the toner image; and a conductive member facing the magnetic permeability sensor of one image forming unit of the image forming units positioned most upstream and arranged upstream of the one image forming unit, wherein the developing device of one of adjacent image forming units is opposed to the cleaning unit of another one which is arranged downstream and is next to the developing device of the one of the adjacent image forming units.

5. 发明授权

US09811022B2 Image forming apparatus having development contrast control 有权
公开(公告)号：US09811022B2
公开(公告)日：2017-11-07
申请号：US15056050
申请日：2016-02-29
申请人： CANON KABUSHIKI KAISHA
发明人： Noriyuki Okada
IPC分类号： G03G15/08 , G03G15/06 , G03G15/09
CPC分类号： G03G15/065 , G03G15/0849 , G03G15/09
摘要： An image forming apparatus includes an image bearing member configured to carry an image, a developing device configured to develop a latent image with a developer including toner and carrier, and a toner content sensor configured to detect a ratio of the toner to the developer in the developing device. A toner container contains the toner to be supplied to the developing device, and a notifying portion notifies necessity for exchange of the toner container when the ratio indicated by the output of the sensor reaches a set level lower than the predetermined range. A controller controls an image forming condition so as to change, on the basis of the output of the toner content sensor, a development contrast wherein the controller sets the development contrast at a level higher than that when the ratio is in the predetermined range, at least in part of a period from when the ratio indicated by the output of the toner content sensor becomes lower than the predetermined range to when the ratio indicated by the output of the toner content sensor reaches a first set level.

6. 发明授权

US09760037B2 Developing apparatus 有权
公开(公告)号：US09760037B2
公开(公告)日：2017-09-12
申请号：US14382404
申请日：2013-04-26
申请人： CANON KABUSHIKI KAISHA
发明人： Tomoyuki Sakamaki , Mitsuhiro Furukawa
IPC分类号： G03G15/08 , G03G15/09
CPC分类号： G03G15/0812 , G03G15/0818 , G03G15/09
摘要： A developing apparatus includes a sleeve for carrying a developer including toner and magnetic carrier, the sleeve having a plurality of grooves extending in a longitudinal direction; a magnet provided inside the sleeve, a non-magnetic regulating member, provided spaced from the sleeve, wherein an amount M/S (mg/mm2) of the developer carried on a unit area of the sleeve after passing by the regulating member, a gap SB (mm) between a free end of the regulating member and the sleeve, a density G (mg/mm3) of the developer, and a groove ratio α which is a ratio of the grooves in the surface of the sleeve satisfy, 0.1≦M/S (mg/mm2)≦0.5 0.2≦SB (mm), and m/S (mg/mm2)×¼≦α×{SB (mm)+D (mm)}×G (mg/mm3)

7. 发明申请

US20170255129A1 DEVELOPING DEVICE 审中-公开
公开(公告)号：US20170255129A1
公开(公告)日：2017-09-07
申请号：US15446339
申请日：2017-03-01
申请人： CANON KABUSHIKI KAISHA
发明人： Shinya Suzuki
IPC分类号： G03G15/08
CPC分类号： G03G15/0891 , G03G15/0853 , G03G15/0893 , G03G15/09 , G03G2215/0838
摘要： A developing device includes a rotatable developer carrying member, first and second chambers, a first rotatable feeding member, a second rotatable feeding member, a first communication port, a second communication port, and a toner content detecting portion including a planar detecting surface including at least a planar coil. The detecting surface is provided in a region of the first communication port sandwiched between rotational axes of the first and second rotatable feeding members and is disposed at a position such that the developer is fed toward both sides of the toner content detecting portion in a direction in which the detecting surface crosses the first direction.

8. 发明申请

US20170115602A1 DEVELOPING DEVICE AND IMAGE FORMING APPARATUS 有权
公开(公告)号：US20170115602A1
公开(公告)日：2017-04-27
申请号：US15353812
申请日：2016-11-17
申请人： CANON KABUSHIKI KAISHA
发明人： Atsushi Matsumoto , Kyosuke Takahashi
IPC分类号： G03G15/08 , G03G15/09
CPC分类号： G03G15/0889 , G03G15/0893 , G03G15/09 , G03G2215/0129
摘要： The present invention suppresses out of balance of developer circulation in a developing device in which a developer carrying member and a stirring member are separately driven. Further, there is provided a developing device preventing an evil effect of an image such as improper coating when a surface of the developer carrying member is coated with a developer.In a period from output of either earlier one of stop signals of motors 7, 8 to rotational stops of both of a developing sleeve 28 and a stirring screw 25 becoming not less than ½ of rotational stops in a steady state during image formation, a ratio α(E) between the rotational speed of the developing sleeve 28 and the rotational speed of the stirring screw 25 satisfies: 0.7

9. 发明申请

US20170090342A1 DEVELOPING DEVICE AND IMAGE FORMING APPARATUS AND PROCESS CARTRIDGE INCORPORATING SAME 有权
公开(公告)号：US20170090342A1
公开(公告)日：2017-03-30
申请号：US15282172
申请日：2016-09-30
申请人： Tatsuya OHHIRA , Atsushi Kurokawa , Masayuki Yamane , Keiichi Yoshida , Toshiki Hayashi
发明人： Tatsuya OHHIRA , Atsushi Kurokawa , Masayuki Yamane , Keiichi Yoshida , Toshiki Hayashi , Shunji Katoh
IPC分类号： G03G15/08 , G03G15/09
CPC分类号： G03G15/0812 , G03G15/09 , G03G15/0921 , G03G2215/0132 , G03G2215/0838
摘要： A developing device includes a developer bearer, a magnetic field generator, a easing having an opening, a developer conveyor to rotate inside a developer containing compartment below the developer bearer, and a developer regulator. A side wall of the casing defines a bottom end of the opening, and the developer regulator is disposed on the side wall. The side wall includes an upper end face facing the developer bearer below an axis of the developer bearer and a curved inner face along an orbit of rotation of the developer conveyor, extending from below the developer conveyor toward the upper end face. On a virtual plane perpendicular to the axis of the developer bearer, an intersection between a tangent line to an upper end of the curved inner face and the surface of the developer bearer is in a range from a tangential magnetic-flux peak and a closest approach point.

10. 发明申请

US20170075252A1 DEVELOPING DEVICE AND IMAGE FORMING APPARATUS INCLUDING SAME 有权
标题翻译：开发设备和图像形成装置，包括它们
公开(公告)号：US20170075252A1
公开(公告)日：2017-03-16
申请号：US15228791
申请日：2016-08-04
申请人： KYOCERA Document Solutions Inc.
发明人： Shinji OTANI , Yukari OTA , Yasuhiro TAUCHI , Takashi SOMETE , Yoshimi SHIMIZU
IPC分类号： G03G15/09
CPC分类号： G03G15/081 , G03G15/0812 , G03G15/0815 , G03G15/09
摘要： A developing device includes a developing roller, a toner supplying roller, a regulation blade, a casing, a toner receiver support member, a toner receiver member, and a vibration generator. The toner receiver member is disposed along a longitudinal direction of the toner receiver support member facing the developing roller, and has a toner receiving surface inclined downward from the image-carrier side toward the toner-supplying-roller side. The toner receiving surface is disposed to be inclined so as to rise from the toner-supplying-roller side toward the image-carrier side. The toner receiving surface has a plurality of grooves formed therein to be inclined to approach a center part of the toner receiving surface from each end side of the toner receiving surface in its longitudinal direction, from an edge of the toner receiving surface on the image-carrier side toward an edge of the toner receiving surface on the toner-supplying-roller side.
摘要翻译：显影装置包括显影辊，调色剂供应辊，调节片，壳体，调色剂接收器支撑构件，调色剂接收构件和振动发生器。调色剂接收部件沿着面向显影辊的调色剂接收器支撑部件的纵向设置，并且具有从图像载体侧向调色剂供给辊侧向下倾斜的调色剂接收表面。调色剂接收表面被设置成从调色剂供给辊侧朝向图像载体侧上升。调色剂接收表面具有形成在其中的多个凹槽，以从图像形成部件上的调色剂接收表面的边缘沿着其长度方向从调色剂接收表面的每个端部侧接近调色剂接收表面的中心部分，载体侧朝向调色剂供给辊侧的调色剂接收表面的边缘。

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