公开(公告)号：US20090245882A1

公开(公告)日：2009-10-01

申请号：US12412892

申请日：2009-03-27

申请人： Takamasa OZEKI ,  Katsumi Masuda ,  Yoahio Hattori ,  Hiroyuki Uenishi ,  Yuji Suzuki ,  Kyohta Koetsuka ,  Masayuki Ohsawa ,  Yoshlyuki Takano ,  Takeroh Kurenuma

发明人： Takamasa OZEKI ,  Katsumi Masuda ,  Yoahio Hattori ,  Hiroyuki Uenishi ,  Yuji Suzuki ,  Kyohta Koetsuka ,  Masayuki Ohsawa ,  Yoshlyuki Takano ,  Takeroh Kurenuma

IPC分类号： G03G15/08

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：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：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：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：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：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：US20120051797A1

公开(公告)日：2012-03-01

申请号：US13137194

申请日：2011-07-27

申请人： Yuji Suzuki ,  Akihiro Takayama ,  Kentarou Nodera ,  Hiroyuki Uenishi ,  Susumu Tateyama ,  Shinnosuke Koshizuka ,  Tatsuya Kubo ,  Kohichi Yamazaki

发明人： Yuji Suzuki ,  Akihiro Takayama ,  Kentarou Nodera ,  Hiroyuki Uenishi ,  Susumu Tateyama ,  Shinnosuke Koshizuka ,  Tatsuya Kubo ,  Kohichi Yamazaki

IPC分类号： G03G15/09

CPC分类号： G03G15/0889 ,  G03G15/081 ,  G03G15/0928

摘要： A development device includes a developer bearer to carry the developer to a development range, a magnetic field generator disposed inside the developer bearer for generating magnetic force, a developer regulator for adjusting an amount of the developer, a developer supply compartment disposed adjacent to the developer bearer, separated by a side wall from a portion where the developer bearer is provided, a developer agitator provided in the supply compartment, and a blocker disposed above the side wall of the supply compartment across a supply gap through which the developer moves from the supply compartment. The magnetic field generator has an attraction magnetic pole and a regulation magnetic pole. The blocker prevents the developer blocked by the developer regulator from moving along a magnetic force line of the regulation magnetic force toward the circumferential surface of the developer bearer.

摘要翻译： 显影装置包括将显影剂携带到显影范围的显影剂载体，设置在显影剂载体内部以产生磁力的磁场发生器，用于调节显影剂量的显影剂调节器，与显影剂相邻设置的显影剂供应室 承载体由侧壁与设置有显影剂载体的部分隔开，设置在供应隔室中的显影剂搅拌器和阻挡件，其设置在供应间隔的侧壁上方，跨越供给间隙，显影剂从供应间隙移动， 隔间 磁场发生器具有吸引磁极和调节磁极。 阻挡剂防止由显影剂调节器阻挡的显影剂沿着调节磁力的磁力线朝着显影剂载体的圆周表面移动。

公开(公告)号：US08559856B2

公开(公告)日：2013-10-15

申请号：US13137194

申请日：2011-07-27

申请人： Yuji Suzuki ,  Akihiro Takayama ,  Kentarou Nodera ,  Hiroyuki Uenishi ,  Susumu Tateyama ,  Shinnosuke Koshizuka ,  Tatsuya Kubo ,  Kohichi Yamazaki

发明人： Yuji Suzuki ,  Akihiro Takayama ,  Kentarou Nodera ,  Hiroyuki Uenishi ,  Susumu Tateyama ,  Shinnosuke Koshizuka ,  Tatsuya Kubo ,  Kohichi Yamazaki

IPC分类号： G03G15/09

CPC分类号： G03G15/0889 ,  G03G15/081 ,  G03G15/0928

摘要： A development device includes a developer bearer to carry the developer to a development range, a magnetic field generator disposed inside the developer bearer for generating magnetic force, a developer regulator for adjusting an amount of the developer, a developer supply compartment disposed adjacent to the developer bearer, separated by a side wall from a portion where the developer bearer is provided, a developer agitator provided in the supply compartment, and a blocker disposed above the side wall of the supply compartment across a supply gap through which the developer moves from the supply compartment. The magnetic field generator has an attraction magnetic pole and a regulation magnetic pole. The blocker prevents the developer blocked by the developer regulator from moving along a magnetic force line of the regulation magnetic force toward the circumferential surface of the developer bearer.

摘要翻译： 显影装置包括将显影剂携带到显影范围的显影剂载体，设置在显影剂载体内部以产生磁力的磁场发生器，用于调节显影剂量的显影剂调节器，与显影剂相邻设置的显影剂供应室 承载体由侧壁与设置有显影剂载体的部分隔开，设置在供应隔室中的显影剂搅拌器和阻挡件，其设置在供应间隔的侧壁上方，跨越供给间隙，显影剂从供应间隙移动， 隔间 磁场发生器具有吸引磁极和调节磁极。 阻挡剂防止由显影剂调节器阻挡的显影剂沿着调节磁力的磁力线朝着显影剂载体的圆周表面移动。

公开(公告)号：US08655237B2

公开(公告)日：2014-02-18

申请号：US14019991

申请日：2013-09-06

申请人： Yuji Suzuki ,  Akihiro Takayama ,  Kentaro Nodera ,  Hiroyuki Uenishi ,  Susumu Tateyama ,  Shinnosuke Koshizuka ,  Tatsuya Kubo ,  Koichi Yamazaki

发明人： Yuji Suzuki ,  Akihiro Takayama ,  Kentaro Nodera ,  Hiroyuki Uenishi ,  Susumu Tateyama ,  Shinnosuke Koshizuka ,  Tatsuya Kubo ,  Koichi Yamazaki

IPC分类号： G03G15/09

CPC分类号： G03G15/0889 ,  G03G15/081 ,  G03G15/0928

摘要： A development device includes a developer bearer to carry the developer to a development range, a magnetic field generator disposed inside the developer bearer for generating magnetic force, a developer regulator for adjusting an amount of the developer, a developer supply compartment disposed adjacent to the developer bearer, separated by a side wall from a portion where the developer bearer is provided, a developer agitator provided in the supply compartment, and a blocker disposed above the side wall of the supply compartment across a supply gap through which the developer moves from the supply compartment. The magnetic field generator has an attraction magnetic pole and a regulation magnetic pole. The blocker prevents the developer blocked by the developer regulator from moving along a magnetic force line of the regulation magnetic force toward the circumferential surface of the developer bearer.

摘要翻译： 显影装置包括将显影剂携带到显影范围的显影剂载体，设置在显影剂载体内部以产生磁力的磁场发生器，用于调节显影剂量的显影剂调节器，与显影剂相邻设置的显影剂供应室 承载体由侧壁与设置有显影剂载体的部分隔开，设置在供应隔室中的显影剂搅拌器和阻挡件，其设置在供应间隔的侧壁上方，跨越供给间隙，显影剂从供应间隙移动， 隔间 磁场发生器具有吸引磁极和调节磁极。 阻挡剂防止由显影剂调节器阻挡的显影剂沿着调节磁力的磁力线朝着显影剂载体的圆周表面移动。

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％。