公开(公告)号：US20090245887A1

公开(公告)日：2009-10-01

申请号：US12398496

申请日：2009-03-05

申请人： Katsumi Masuda ,  Yoshio Hattori ,  Hiroyuki Uenishi ,  Yuji Suzuki ,  Takamasa Ozeki

发明人： Katsumi Masuda ,  Yoshio Hattori ,  Hiroyuki Uenishi ,  Yuji Suzuki ,  Takamasa Ozeki

IPC分类号： G03G15/09

CPC分类号： G03G15/0921

摘要： To downsize a developing device in the developing carrier axial direction without generating image concentration irregularities from recirculation of developer in the magnetic roller end regions, an N2 pole and an N3 pole, which are mutually adjacent having the same polarity (N polarity), and which are for generating a magnetic force for removing from a developing sleeve a developer that has passed through a developing region, are provided on a magnetic roller. Magnets of this developing device, which are for generating a magnetic field to displace to the inside in the axial direction magnetic force lines that cause peeling force in the direction of separation from the developing sleeve to act on developer on the developing sleeve, based on the magnetic force of the N2 pole and the N3 pole, and that pass through the axial direction end regions within a developer separation region on the developing sleeve, are provided on the outside of the magnetic roller.

摘要翻译： 为了在显影载体轴向方向上的显影装置的尺寸减小，而不产生图像浓度不均匀性，从而使磁辊端区域中的显影剂再循环，具有相同极性（N极性）的相互相邻的N2极和N3极， 用于产生用于从显影套筒移除已经通过显影区域的显影剂的磁力，设置在磁性辊上。 该显影装置的磁体，用于产生磁场以向轴向方向的内侧移动，该磁力线基于显影套筒上的显影剂分离的方向产生剥离力，作用于显影套筒上的显影剂，基于 在磁辊的外侧设置N2极和N3极的磁力，并且穿过显影套筒上的显影剂分离区域内的轴向端部区域。

公开(公告)号：US08331834B2

公开(公告)日：2012-12-11

申请号：US12412019

申请日：2009-03-26

申请人： Kyohta Koetsuka ,  Masayuki Ohsawa ,  Yoshiyuki Takano ,  Katsumi Masuda ,  Yoshio Hattori ,  Yuji Suzuki ,  Takamasa Ozeki ,  Hiroyuki Uenishi

发明人： Kyohta Koetsuka ,  Masayuki Ohsawa ,  Yoshiyuki Takano ,  Katsumi Masuda ,  Yoshio Hattori ,  Yuji Suzuki ,  Takamasa Ozeki ,  Hiroyuki Uenishi

IPC分类号： G03G21/16 ,  G03G15/04 ,  G03G15/08 ,  G03G15/09

CPC分类号： G03G15/0921 ,  G03G2215/0634

摘要： A developing unit includable in a process cartridge and in an image forming apparatus includes a developer bearing member including a magnetic field generator and a nonmagnetic hollow member, a developer container, an agitation/conveyance member, and a developer regulating member. The magnetic field generator has first and second magnetic poles to generate respective magnetic forces for removing the developer from the developer bearing member after the developer passes the development region. A developer-releasing region releases the developer from the developer bearing member using a release force. The developer is disposed higher than a surface of the developer in the developer storing chamber. A component of a magnetic flux density of the magnetic field generated by the magnetic field generator in a direction normal to the developer-releasing region is directed to a same direction as the first and second magnetic poles across the developer-releasing region without forming a local maximum point.

摘要翻译： 包括处理盒和图像形成装置中的显影单元包括包括磁场发生器和非磁性中空构件的显影剂承载构件，显影剂容器，搅拌/输送构件和显影剂调节构件。 磁场发生器具有第一和第二磁极，以在显影剂通过显影区域之后产生用于从显影剂承载部件移除显影剂的相应磁力。 显影剂释放区域使用释放力将显影剂从显影剂承载构件释放。 显影剂被布置成高于显影剂储存室中显影剂的表面。 由磁场发生器沿垂直于显影剂释放区域的方向产生的磁场的磁通密度分量指向与显影剂释放区域的第一和第二磁极相同的方向，而不形成局部 最大点。

公开(公告)号：US07813680B2

公开(公告)日：2010-10-12

申请号：US12398496

申请日：2009-03-05

申请人： Katsumi Masuda ,  Yoshio Hattori ,  Hiroyuki Uenishi ,  Yuji Suzuki ,  Takamasa Ozeki

发明人： Katsumi Masuda ,  Yoshio Hattori ,  Hiroyuki Uenishi ,  Yuji Suzuki ,  Takamasa Ozeki

IPC分类号： G03G15/09

CPC分类号： G03G15/0921

摘要： To downsize a developing device in the developing carrier axial direction without generating image concentration irregularities from recirculation of developer in the magnetic roller end regions, an N2 pole and an N3 pole, which are mutually adjacent having the same polarity (N polarity), and which are for generating a magnetic force for removing from a developing sleeve a developer that has passed through a developing region, are provided on a magnetic roller. Magnets of this developing device, which are for generating a magnetic field to displace to the inside in the axial direction magnetic force lines that cause peeling force in the direction of separation from the developing sleeve to act on developer on the developing sleeve, based on the magnetic force of the N2 pole and the N3 pole, and that pass through the axial direction end regions within a developer separation region on the developing sleeve, are provided on the outside of the magnetic roller.

摘要翻译： 为了在显影载体轴向方向上的显影装置的尺寸减小，而不产生图像浓度不均匀性，从而使磁辊端区域中的显影剂再循环，具有相同极性（N极性）的相互相邻的N2极和N3极， 用于产生用于从显影套筒移除已经通过显影区域的显影剂的磁力，设置在磁性辊上。 该显影装置的磁体，用于产生磁场以向轴向方向的内侧移动，该磁力线基于显影套筒上的显影剂分离的方向产生剥离力，作用于显影套筒上的显影剂，基于 在磁辊的外侧设置N2极和N3极的磁力，并且穿过显影套筒上的显影剂分离区域内的轴向端部区域。

公开(公告)号：US20090245889A1

公开(公告)日：2009-10-01

申请号：US12412019

申请日：2009-03-26

申请人： Kyohta Koetsuka ,  Masayuki Ohsawa ,  Yoshiyuki Takano ,  Katsumi Masuda ,  Yoshio Hattori ,  Yuji Suzuki ,  Takamasa Ozeki ,  Hiroyuki Uenishi

发明人： Kyohta Koetsuka ,  Masayuki Ohsawa ,  Yoshiyuki Takano ,  Katsumi Masuda ,  Yoshio Hattori ,  Yuji Suzuki ,  Takamasa Ozeki ,  Hiroyuki Uenishi

IPC分类号： G03G15/09

CPC分类号： G03G15/0921 ,  G03G2215/0634

摘要： A developing unit includable in a process cartridge and in an image forming apparatus includes a developer bearing member including a magnetic field generator and a nonmagnetic hollow member, a developer container, an agitation/conveyance member, and a developer regulating member. The magnetic field generator has first and second magnetic poles to generate respective magnetic forces for removing the developer from the developer bearing member after the developer passes the development region. A developer-releasing region releases the developer from the developer bearing member using a release force. The developer is disposed higher than a surface of the developer in the developer storing chamber. A component of a magnetic flux density of the magnetic field generated by the magnetic field generator in a direction normal to the developer-releasing region is directed to a same direction as the first and second magnetic poles across the developer-releasing region without forming a local maximum point.

摘要翻译： 包括处理盒和图像形成装置中的显影单元包括包括磁场发生器和非磁性中空构件的显影剂承载构件，显影剂容器，搅拌/输送构件和显影剂调节构件。 磁场发生器具有第一和第二磁极，以在显影剂通过显影区域之后产生用于从显影剂承载部件移除显影剂的相应磁力。 显影剂释放区域使用释放力将显影剂从显影剂承载构件释放。 显影剂被布置成高于显影剂储存室中显影剂的表面。 由磁场发生器沿垂直于显影剂释放区域的方向产生的磁场的磁通密度分量指向与显影剂释放区域的第一和第二磁极相同的方向，而不形成局部 最大点。

公开(公告)号：US08135315B2

公开(公告)日：2012-03-13

申请号：US12412892

申请日：2009-03-27

申请人： Takamasa Ozeki ,  Katsumi Masuda ,  Yoshio Hattori ,  Hiroyuki Uenishi ,  Yuji Suzuki ,  Kyohta Koetsuka ,  Masayuki Ohsawa ,  Yoshiyuki Takano ,  Takeroh Kurenuma ,  Akira Azami ,  Nobuyuki Taguchi

发明人： Takamasa Ozeki ,  Katsumi Masuda ,  Yoshio Hattori ,  Hiroyuki Uenishi ,  Yuji Suzuki ,  Kyohta Koetsuka ,  Masayuki Ohsawa ,  Yoshiyuki Takano ,  Takeroh Kurenuma ,  Akira Azami ,  Nobuyuki Taguchi

IPC分类号： G03G15/09 ,  G03G15/095

CPC分类号： G03G15/0812 ,  G03G15/0921 ,  G03G2215/0609

摘要： A developing unit includable in a process cartridge and in an image forming apparatus includes a developer bearing member including a magnetic field generator and a nonmagnetic hollow member, a developer container, an agitation/conveyance member, a developer regulating member to regulate the thickness of a layer of the two-component developer. The magnetic field generator has first and second magnetic poles to generate respective magnetic forces for removing the developer from the developer bearing member after the developer passes the development region. The second magnetic pole generates a magnetic force to attract the developer to form a magnetic brush on the developer bearing member. The developer regulating member includes a magnetic member outwardly disposed on an exterior perimeter surface of the developer bearing member upstream from the developer regulating member, and one planar surface of the magnetic member faces the second magnetic pole across an effective development region.

摘要翻译： 可包括在处理盒和图像形成装置中的显影单元包括显影剂承载部件，该显影剂承载部件包括磁场发生器和非磁性中空部件，显影剂容器，搅拌/传送部件，显影剂调节部件， 双组分显影剂层。 磁场发生器具有第一和第二磁极，以在显影剂通过显影区域之后产生用于从显影剂承载部件移除显影剂的相应磁力。 第二磁极产生磁力以吸引显影剂以在显影剂承载部件上形成磁刷。 显影剂调节构件包括在显影剂调节构件的上游向外设置在显影剂承载构件的外周表面上的磁性构件，磁性构件的一个平坦表面横跨有效显影区域面对第二磁极。

公开(公告)号：US08326189B2

公开(公告)日：2012-12-04

申请号：US12860203

申请日：2010-08-20

申请人： Yoshiyuki Fukuda ,  Katsumi Masuda ,  Nobuyuki Taguchi ,  Yuuki Satoh ,  Yasufumi Takahashi ,  Keiichi Yoshida ,  Yoshio Hattori ,  Akira Azami ,  Takamasa Ozeki ,  Toshiki Hayashi

发明人： Yoshiyuki Fukuda ,  Katsumi Masuda ,  Nobuyuki Taguchi ,  Yuuki Satoh ,  Yasufumi Takahashi ,  Keiichi Yoshida ,  Yoshio Hattori ,  Akira Azami ,  Takamasa Ozeki ,  Toshiki Hayashi

IPC分类号： G03G15/06 ,  G03G15/09

CPC分类号： G03G15/0921 ,  G03G15/0806 ,  G03G2215/0822

摘要： There is provided a separation member for separating a first conveying path formed by a first conveying member from a second conveying path formed by a second conveying member. There is also provided an opposed member facing a magnetic pole H4 at an upstream side of two magnetic poles H4 and H6 that forms a developer-releasing magnetic pole H5.

摘要翻译： 设置有用于将由第一输送构件形成的第一输送路径与由第二输送构件形成的第二输送路径分离的分离构件。 另外，在形成显影剂释放用磁极H5的两个磁极H4，H6的上游侧也设有面向磁极H4的相对构件。

公开(公告)号：US20110058858A1

公开(公告)日：2011-03-10

申请号：US12860203

申请日：2010-08-20

申请人： Yoshiyuki Fukuda ,  Katsumi Masuda ,  Nobuyuki Taguchi ,  Yuuki Satoh ,  Yasufumi Takahashi ,  Keiichi Yoshida ,  Yoshio Hattori ,  Akira Azami ,  Takamasa Ozeki ,  Toshiki Hayashi

发明人： Yoshiyuki Fukuda ,  Katsumi Masuda ,  Nobuyuki Taguchi ,  Yuuki Satoh ,  Yasufumi Takahashi ,  Keiichi Yoshida ,  Yoshio Hattori ,  Akira Azami ,  Takamasa Ozeki ,  Toshiki Hayashi

IPC分类号： G03G15/09

CPC分类号： G03G15/0921 ,  G03G15/0806 ,  G03G2215/0822

摘要： There is provided a separation member for separating a first conveying path formed by a first conveying member from a second conveying path formed by a second conveying member. There is also provided an opposed member facing a magnetic pole H4 at an upstream side of two magnetic poles H4 and H6 that forms a developer-releasing magnetic pole H5.

摘要翻译： 设置有用于将由第一输送构件形成的第一输送路径与由第二输送构件形成的第二输送路径分离的分离构件。 另外，在形成显影剂释放用磁极H5的两个磁极H4，H6的上游侧也设有面向磁极H4的相对构件。

公开(公告)号：US07599650B2

公开(公告)日：2009-10-06

申请号：US11554360

申请日：2006-10-30

申请人： Shunji Katoh ,  Katsumi Masuda ,  Hideo Yoshizawa ,  Yoshio Hattori ,  Hideki Kimura ,  Kiyotaka Sakai ,  Kenji Nakajima ,  Keiichi Yoshida ,  Akira Azami ,  Yuji Suzuki

发明人： Shunji Katoh ,  Katsumi Masuda ,  Hideo Yoshizawa ,  Yoshio Hattori ,  Hideki Kimura ,  Kiyotaka Sakai ,  Kenji Nakajima ,  Keiichi Yoshida ,  Akira Azami ,  Yuji Suzuki

IPC分类号： G03G15/08

CPC分类号： G03G15/0818

摘要： A developer bearing member on which grooves slanting in a thrust direction of the developer bearing member cross other grooves reversely slanting relative to the thrust direction, wherein each of the grooves and the reversely slanting grooves is slanting at an angle of greater than 0° and not greater than 40°. Any two adjacent intersections of the grooves and the reversely slanting grooves in the thrust (or peripheral) direction are preferably on different levels in the peripheral (or thrust) direction. The distance between two adjacent intersections in the thrust direction is preferably from 1.3 mm to 4.8 mm. The distance between two adjacent intersections in the thrust direction is preferably from 0.38 Vd/Vi (mm) to 1.1 Vd/Vi (mm). The deviation in depth of grooves present on a 36° arc surface portion of the member is not greater than 15% of the gap between the image bearing member and the developer bearing member.

摘要翻译： 显影剂承载构件，其上在显影剂承载构件的推力方向上倾斜的槽与相对于推力方向相反的其它槽交叉，其中每个槽和反向倾斜槽以大于0°的角度倾斜，而不是 大于40°。 推力（或周向）方向上的凹槽和反向倾斜凹槽的任何两个相邻的交叉点优选地在周边（或推力）方向上处于不同的水平面上。 推力方向上两个相邻交叉点之间的距离优选为1.3mm至4.8mm。 推力方向上两个相邻交叉点之间的距离优选为0.38Vd / Vi（mm）至1.1Vd / Vi（mm）。 存在于构件的36°弧形表面部分上的凹槽的深度偏差不大于图像承载构件和显影剂承载构件之间的间隙的15％。

公开(公告)号：US20070104516A1

公开(公告)日：2007-05-10

申请号：US11554360

申请日：2006-10-30

申请人： Shunji KATOH ,  Katsumi Masuda ,  Hideo Yoshizawa ,  Yoshio Hattori ,  Hideki Kimura ,  Kiyotaka Sakai ,  Kenji Nakajima ,  Keiichi Yoshida ,  Akira Azami ,  Yuji Suzuki

发明人： Shunji KATOH ,  Katsumi Masuda ,  Hideo Yoshizawa ,  Yoshio Hattori ,  Hideki Kimura ,  Kiyotaka Sakai ,  Kenji Nakajima ,  Keiichi Yoshida ,  Akira Azami ,  Yuji Suzuki

IPC分类号： G03G15/09

CPC分类号： G03G15/0818

摘要： A developer bearing member on which grooves slanting in a thrust direction of the developer bearing member cross other grooves reversely slanting relative to the thrust direction, wherein each of the grooves and the reversely slanting grooves is slanting at an angle of greater than 0° and not greater than 40°. Any two adjacent intersections of the grooves and the reversely slanting grooves in the thrust (or peripheral) direction are preferably on different levels in the peripheral (or thrust) direction. The distance between two adjacent intersections in the thrust direction is preferably from 1.3 mm to 4.8 mm. The distance between two adjacent intersections in the thrust direction is preferably from 0.38 Vd/Vi (mm) to 1.1 Vd/Vi (mm). The deviation in depth of grooves present on a 36° arc surface portion of the member is not greater than 15% of the gap between the image bearing member and the developer bearing member.

摘要翻译： 显影剂承载构件，其上在显影剂承载构件的推力方向上倾斜的槽与相对于推力方向相反的其它槽交叉，其中每个槽和反向倾斜槽以大于0°的角度倾斜，而不是 大于40°。 推力（或周向）方向上的凹槽和反向倾斜凹槽的任何两个相邻的交叉点优选地在外周（或推力）方向上处于不同的水平。 推力方向上两个相邻交叉点之间的距离优选为1.3mm至4.8mm。 推力方向上两个相邻交叉点之间的距离优选为0.38Vd / Vi（mm）至1.1Vd / Vi（mm）。 存在于构件的36°弧形表面部分上的凹槽的深度偏差不大于图像承载构件和显影剂承载构件之间的间隙的15％。

公开(公告)号：US09316950B2

公开(公告)日：2016-04-19

申请号：US13856541

申请日：2013-04-04

申请人： Tomoko Takahashi ,  Yoshiyuki Fukuda ,  Yoshio Hattori ,  Sho Akiyama ,  Takamasa Ozeki ,  Yoshinori Nakagawa ,  Mikio Ishibashi ,  Ryuji Yoshida ,  Taichi Urayama

发明人： Tomoko Takahashi ,  Yoshiyuki Fukuda ,  Yoshio Hattori ,  Sho Akiyama ,  Takamasa Ozeki ,  Yoshinori Nakagawa ,  Mikio Ishibashi ,  Ryuji Yoshida ,  Taichi Urayama

IPC分类号： G03G15/09

CPC分类号： G03G15/0849 ,  G03G15/0921 ,  G03G21/18

摘要： A development device is operable in multiple different speed modes and includes a developer bearer to carry developer, a developer regulator to adjust an amount of developer carried on the developer bearer, and multiple developer conveyance members disposed facing the developer bearer to transport developer in a longitudinal direction to circulate developer inside the development device. The multiple developer conveyance members including a first developer conveyance member to supply developer to the developer bearer and a second developer conveyance member to transport developer collected from the developer bearer. The development device executes developer amount balance adjustment in which a driving velocity of at least the multiple developer conveyance members is increased from a driving velocity in a lower-speed mode for a predetermined period after image development in the lower speed mode is completed and before image development in a higher speed mode is started.

摘要翻译： 显影装置可以多种不同的速度模式操作，并且包括用于承载显影剂的显影剂载体，显影剂调节器，用于调节显影剂载体承载的显影剂的量，以及面向显影剂载体设置的多个显影剂传送构件，以纵向传送显影剂 使显影剂在显影装置内循环的方向。 多个显影剂传送构件包括用于向显影剂载体提供显影剂的第一显影剂传送构件和用于传送从显影剂载体收集的显影剂的第二显影剂传送构件。 显影装置执行显影剂量平衡调整，其中至少多个显影剂输送构件的驱动速度在低速模式下的图像显影完成之后的预定时间段内从低速模式的驱动速度增加，并且在图像之前 开始以较高速度模式开发。