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1. 发明授权

US4933254A Method and apparatus for transferring toner from carrying member to image bearing member using chains of magnetic particles 失效
标题翻译：使用磁性颗粒链将调色剂从携带部件转印到图像承载部件上的方法和装置
公开(公告)号：US4933254A
公开(公告)日：1990-06-12
申请号：US257164
申请日：1988-10-13
申请人： Atsushi Hosoi , Hatsuo Tajima , Takashi Saito , Norihisa Hoshika , Hiroshi Tajika , Masaaki Yamaji
发明人： Atsushi Hosoi , Hatsuo Tajima , Takashi Saito , Norihisa Hoshika , Hiroshi Tajika , Masaaki Yamaji
IPC分类号： G03G13/09 , G03G15/09
CPC分类号： G03G13/09 , G03G15/09
摘要： A developing method including forming a layer of electrically charged toner particles on a surface of the developer carrying member and dispersing magnetic particles retaining on their surfaces electrically charged toner particles on the surface of the developer carrying member, carrying the particles on the developer carrying member to a developing position where a surface of an electrostatic latent image bearing member for bearing an electrostatic latent image is opposed with a clearance to the surface of the developer carrying member, applying an alternating electric field across the clearance and forming the magnetic particles into chains of the magnetic particles by magnetic field generating means disposed behind the developer carrying member, and developing the electrostatic latent image by the charged toner particles on the surface of the developer carrying member and on the surfaces of the magnetic particles.
摘要翻译：一种显影方法，包括在显影剂承载构件的表面上形成带电荷的调色剂颗粒层，并将保持在其表面上的带电荷的调色剂颗粒的磁性颗粒分散在显影剂承载构件的表面上，将显影剂承载构件上的颗粒携带在显影位置，其中用于承载静电潜像的静电潜像承载部件的表面与显影剂承载部件的表面间隙相对，跨越间隙施加交变电场，并将磁性颗粒形成为通过设置在显影剂承载构件后面的磁场产生装置的磁性颗粒，并且通过在显影剂承载构件的表面和磁性颗粒的表面上的带电调色剂颗粒将静电潜像显影。

2. 发明授权

US5574545A Method for transferring toner from developer carrying member to image bearing member using chains of magnetic particles formed on developer carrying member and contacting image bearing member, and alternating electric field 失效
标题翻译：使用形成在显影剂承载构件上并与图像承载部件接触的磁性颗粒链将调色剂从显影剂承载部件转印到图像承载部件的方法，以及交替电场
公开(公告)号：US5574545A
公开(公告)日：1996-11-12
申请号：US455716
申请日：1995-05-22
申请人： Atsushi Hosoi , Hatsuo Tajima , Takashi Saito , Norihisa Hoshika , Hiroshi Tajika , Masaaki Yamaji
发明人： Atsushi Hosoi , Hatsuo Tajima , Takashi Saito , Norihisa Hoshika , Hiroshi Tajika , Masaaki Yamaji
IPC分类号： G03G13/09 , G03G15/09 , G03G9/14
CPC分类号： G03G13/09 , G03G15/09
摘要： In a developing method, a layer of electrically charged toner particles is formed on a surface of a developer carrying member, and magnetic particles which retain on their surfaces electrically charged toner particles are dispersed on the surface of the developing carrying member. The toner particles and magnetic particles are carried on the developing carrying member to a developing position where a surface of an electrostatic latent image bearing member for bearing an electrostatic latent image is opposed with a clearance to the surface of the developer carrying member. An alternating electric field is formed at the developing position against the electrostatic image and chains of magnetic particles are formed by stationary magnetic field generating apparatus disposed behind the developer carrying member. The latent electrostatic latent image is developed by the charge toner particles on the surface of the developer carrying member and on the surface of the magnetic particles in the clearance under the alternating electric field and the stationary magnetic field.
摘要翻译：在显影方法中，在显影剂承载构件的表面上形成带电荷的调色剂颗粒层，并且保留在其表面带电荷的调色剂颗粒的磁性颗粒分散在显影承载构件的表面上。调色剂颗粒和磁性颗粒在显影承载构件上承载到显影位置，其中用于承载静电潜像的静电潜像承载构件的表面与显影剂承载构件的表面间隙相对。在显影位置处相对于静电图像形成交变电场，并且磁性颗粒链由设置在显影剂承载构件后面的固定磁场产生装置形成。潜像静电潜像由显影剂承载构件的表面上的充电调色剂颗粒和在交变电场和静止磁场下的间隙中的磁性颗粒的表面上显影。

3. 发明授权

US4916492A Developer method and apparatus 失效
标题翻译：显影方法和装置
公开(公告)号：US4916492A
公开(公告)日：1990-04-10
申请号：US258059
申请日：1988-10-17
申请人： Norihisa Hoshika , Hatsuo Tajima , Masaaki Yamaji , Atsushi Hosoi , Hiroshi Tajika
发明人： Norihisa Hoshika , Hatsuo Tajima , Masaaki Yamaji , Atsushi Hosoi , Hiroshi Tajika
IPC分类号： G03G13/09 , G03G15/09
CPC分类号： G03G13/09 , G03G15/09
摘要： A developing method utilizing a developer including a mixture of magnetic carrier particles and toner particles wherein a stationary layer containing magnetic particles is formed on a developer carrying member in a developer container. The stationary layer is allowed to expand and contract in order to control an area of the developer supplying opening upstream of the stationary layer with respect to movement of the developer carrying member thus stabilizing the toner content in the developer supplied to the developing station.
摘要翻译：利用包含磁性载体颗粒和调色剂颗粒的混合物的显影剂的显影方法，其中在显影剂容器中的显影剂承载构件上形成含有磁性颗粒的固定层。允许固定层膨胀和收缩，以便相对于显影剂承载构件的运动来控制静止层上游的显影剂供应开口的面积，从而稳定供给到显影站的显影剂中的调色剂含量。

4. 发明授权

US5402215A Image forming apparatus 失效
标题翻译：图像形成装置
公开(公告)号：US5402215A
公开(公告)日：1995-03-28
申请号：US247404
申请日：1994-05-23
申请人： Masaaki Yamaji
发明人： Masaaki Yamaji
IPC分类号： G03G15/09 , G03G15/22
CPC分类号： G03G15/0921
摘要： An image forming apparatus includes a movable image bearing drum; a device for forming a dot distribution electrostatic latent image on the drum in accordance with an image signal; a developing device for developing the dot distribution electrostatic latent image with a developer containing magnetic carrier particles and toner particles, the developing device including a rotatable developer carrying sleeve for carrying the developer to a developing zone, voltage source for applying an oscillating bias voltage to the sleeve, and a magnet stationarily disposed in the sleeve; wherein the magnet has first and second magnetic poles opposite polarities first magnetic pole being positioned upstream of a position where the drum and the sleeve are closest to each other and in an upstream part of the developing zone, the second magnetic pole is positioned downstream of the developing zone, wherein a downstream part of the developing zone include a region where an angle of magnetic line of force relative to a surface of the developer carrying member is not more than 15 degrees, and wherein the magnet is effective to contact chains of developer to the drum in the upstream part of the developing zone.
摘要翻译：图像形成装置包括可动图像承载滚筒; 用于根据图像信号在所述滚筒上形成点分布静电潜像的装置; 一种用含有磁性载体颗粒和调色剂颗粒的显影剂显影点状分布静电潜像的显影装置，该显影装置包括用于将显影剂携带到显影区的可旋转的显影剂承载套筒，用于将振荡偏压施加到套筒和固定地设置在套筒中的磁体; 其中所述磁体具有相反极性的第一和第二磁极，第一磁极位于所述滚筒和所述套筒彼此最靠近的位置的上游，并且在所述显影区域的上游部分中，所述第二磁极位于所述第二磁极的下游显影区域，其中显影区域的下游部分包括其中相对于显影剂承载构件的表面的磁力线的角度不大于15度的区域，并且其中所述磁体有效地将显影剂链连接到鼓在开发区的上游部分。

5. 发明授权

US6032007A Developing device having magnetic seal 有权
标题翻译：具有磁性密封的显影装置
公开(公告)号：US6032007A
公开(公告)日：2000-02-29
申请号：US146357
申请日：1998-09-03
申请人： Masaaki Yamaji , Toshiyuki Karakama
发明人： Masaaki Yamaji , Toshiyuki Karakama
IPC分类号： G03G15/08 , G03G15/09 , G03G21/18
CPC分类号： G03G15/0942
摘要： A developing device, a process cartridge and an image forming apparatus are provided which can suppress and prevent the slipping-through of a developer to the end portions of a developing sleeve and can suppress and prevent the leakage of the developer by a shock or the like. A developer sleeve 31 having a magnet roller 32 therein is disposed in the opening portion of a developing container 30, and magnet seal members 34 for regulating the movement of the toner are disposed in non-contact with the developing sleeve 31 on the outer peripheral surface of the opposite ends of the developing sleeve 31, which is adjacent to the developing container 30. The magnet roller 32 has a plurality of magnetic poles, and N and S poles are magnetized to multiple magnetic poles on the inner peripheral surfaces of the magnet seal members 34. The magnet roller and the magnet seal members are formed so that the peak value Br1 of the magnetic-flux density by each magnetic poles of the magnet roller in the direction of a normal to the surface position of the developing sleeve is smaller than the peak value Br2 of the magnetic-flux density by the opposing magnetic poles of the magnet seal members in the direction of the normal to the surface position of the developing sleeve.
摘要翻译：提供一种显影装置，处理盒和图像形成装置，其可以抑制和防止显影剂向显影套筒的端部滑动，并且可以通过冲击等来抑制和防止显影剂的泄漏。其中具有磁辊32的显影剂套筒31设置在显影容器30的开口部分中，并且用于调节调色剂运动的磁体密封件34被设置成与外周表面上的显影套筒31不接触显影套筒31的与显影容器30相邻的相对端部。磁性辊32具有多个磁极，N和S极被磁化到磁体密封件的内周面上的多个磁极磁辊和磁体密封部件形成为使得磁辊的每个磁极在垂直于显影套筒的表面位置的方向上的磁通密度的峰值Br1小于通过磁体密封部件的相对的磁极在显影套筒的表面位置的法线方向上的磁通密度的峰值Br2。

6. 发明授权

US5129357A Magnetic brush developing apparatus wherein a point of inflection in the magnetic flux density distribution is provided upstream from the maximum flux density position 失效
标题翻译：磁刷显影装置，其中磁通密度分布中的拐点被设置在最大磁通密度位置的上游
公开(公告)号：US5129357A
公开(公告)日：1992-07-14
申请号：US640866
申请日：1991-01-14
申请人： Masaaki Yamaji
发明人： Masaaki Yamaji
IPC分类号： G03G15/09
CPC分类号： G03G15/0921
摘要： A magnet is disposed stationarily in a rotatable developing sleeve. The magnet at least has a developing magnetic pole and a conveying magnetic pole disposed adjacent to it and downstream of it. In the magnetic flux density distribution of the conveying pole, an inflection point is provided upstream of the maximum magnetic flux density position in the magnetic flux density distribution.The point of inflection is defined as the point where the secondary differentiation of the magnetic flux density Br (gauss), which is .delta..sup.2 Br/.delta..sup.2 .THETA., equals zero. The result of setting the inflection point to such a position is an improvement of developer conveying power.
摘要翻译：将磁体固定地放置在可旋转的显影套筒中。磁体至少具有显影磁极和与其相邻设置并在其下游设置的输送磁极。在输送极的磁通密度分布中，在磁通密度分布中的最大磁通密度位置的上游设置拐点。弯曲点被定义为磁通密度Br（高斯）的二次微分，其为ΔB2r/Δ2THETA，等于零。将拐点设定到这样的位置的结果是显影剂输送功率的改善。

7. 发明授权

US5070812A Electrostatic latent image developing apparatus 失效
标题翻译：静电潜像显影装置
公开(公告)号：US5070812A
公开(公告)日：1991-12-10
申请号：US631051
申请日：1990-05-29
申请人： Masaaki Yamaji
发明人： Masaaki Yamaji
IPC分类号： G03G15/08 , G03G15/09
CPC分类号： B82Y15/00 , G03G15/09
摘要： A developing apparatus for developing an electrostatic latent image formed on an image bearing member includes a developer chamber containing a developer comprising non-magnetic toner particles and magnetic carrier particles; a rotatable cylindrical developer carrying member, faced to the image bearing member, for carrying the developer supplied thereto in the developer chamber to supply it to the image bearing member; a magnet stationarily disposed in the developer carrying member to form a magnetic brush of the developer contactable to the image bearing member, wherein a position of maximum magnetic flux density in a direction normal to a surface of the developer carrying member provided by a developing magnetic pole of the magnet is not less than 3 degrees away from a position where the developer carrying member is closest to the image bearing member, and wherein a position of a peak of magnetic force in a direction normal to the surface of the developer carrying member provided by the developing magnetic pole is within 8 degrees from the closest position.
摘要翻译：用于显影形成在图像承载部件上的静电潜像的显影装置包括显影剂室，其包含含非磁性调色剂颗粒和磁性载体颗粒的显影剂; 面向图像承载部件的可旋转圆柱形显影剂承载构件，用于将显影剂室中供给的显影剂输送到图像承载部件; 固定地设置在显影剂承载构件中以形成可接触图像承载构件的显影剂的磁刷的磁体，其中最大磁通密度在垂直于由显影磁极提供的显影剂承载构件的表面的方向上的位置的磁体距离显影剂承载构件最靠近图像承载构件的位置不小于3度，并且其中磁力峰垂直于显影剂承载构件的表面的方向的位置由显影磁极距离最近的位置在8度以内。

8. 发明授权

US6029030A Developing apparatus with magnetic seal 有权
标题翻译：具有磁性密封的显影装置
公开(公告)号：US6029030A
公开(公告)日：2000-02-22
申请号：US179578
申请日：1998-10-27
申请人： Masaaki Yamaji , Toshiyuki Karakama
发明人： Masaaki Yamaji , Toshiyuki Karakama
IPC分类号： G03G15/08 , G03G15/09 , G03G21/18
CPC分类号： G03G15/0942
摘要： The present invention provides a developing apparatus comprising a developing container for containing magnetic developing agent, a developing agent bearing member provided at an opening portion of the developing container and adapted to bear and convey the magnetic developing agent, an internal magnet provided within the developing agent bearing member, and a magnetic seal member provided along a circumferential direction of the developing agent bearing member and adapted to prevent leakage of the developing agent at ends of the developing agent bearing member, and wherein the internal magnet and the magnetic seal member have magnetic poles of same polarities in the vicinity of a collecting inlet of the opening portion.
摘要翻译：本发明提供了一种显影装置，包括用于容纳磁性显影剂的显影容器，设置在显影容器的开口部分并适于承载和输送磁性显影剂的显影剂轴承部件，设置在显影剂内的内部磁体轴承构件和沿着显影剂轴承构件的圆周方向设置的磁性密封构件，并且适于防止显影剂在显影剂承载构件的端部处的泄漏，并且其中内部磁体和磁性密封构件具有磁极在开口部的收集口附近具有相同的极性。

9. 发明授权

US5359397A Developing apparatus 失效
标题翻译：开发设备
公开(公告)号：US5359397A
公开(公告)日：1994-10-25
申请号：US111483
申请日：1993-08-25
申请人： Masaaki Yamaji
发明人： Masaaki Yamaji
IPC分类号： G03G15/09
CPC分类号： G03G15/0921
摘要： A developing apparatus for developing an electrostatic latent image formed on an image bearing member includes a developer carrying member for carrying a developer containing toner particles and magnetic carrier particles. The developer carrying member moves through a developing zone for applying the developer to the electrostatic latent image. A stationary magnet assembly is disposed in the developer carrying member. The magnet assembly comprises a rare earth magnet having a first magnetic pole for forming a magnetic field in the developing zone and a resin magnet having a second magnetic pole disposed adjacent to the first magnetic pole downstream of the first magnetic pole with respect to a movement direction of the developer carrying member, wherein a maximum magnetic flux density on a developer carrying member provided by the first magnetic pole is larger than a maximum magnetic flux density on the developer carrying member by the resin magnet.
摘要翻译：用于显影形成在图像承载部件上的静电潜像的显影装置包括用于承载含有调色剂颗粒和磁性载体颗粒的显影剂的显影剂承载构件。显影剂承载构件移动通过用于将显影剂施加到静电潜像的显影区。静电磁体组件设置在显影剂承载构件中。磁体组件包括具有用于在显影区中形成磁场的第一磁极的稀土磁体和具有第二磁极的树脂磁体，第二磁极相对于第一磁极相对于第一磁极相对于运动方向其中由第一磁极提供的显影剂承载构件上的最大磁通密度大于树脂磁体在显影剂承载构件上的最大磁通密度。

10. 发明授权

US5051782A Electrostatic latent image developing apparatus 失效
标题翻译：静电潜像显影装置
公开(公告)号：US5051782A
公开(公告)日：1991-09-24
申请号：US531161
申请日：1990-05-31
申请人： Masaaki Yamaji
发明人： Masaaki Yamaji
IPC分类号： G03G15/09
CPC分类号： G03G15/0921
摘要： A developing apparatus for developing an electrostatic latent image formed on an image bearing member includes a rotatable developer carrying member for being supplied with developer in a developer container and for carrying the developer through a developing zone. A magnet is stationarily disposed in the developer carrying member. The magnet has a first magnetic pole for forming a magnetic field in the developing zone, a second magnetic pole disposed downstream thereof with respect to a rotational direction of the developer carrying member and having a magnetic polarity opposite thereto, and a third magnetic pole disposed downstream of the second magnetic pole with respect to the direction and disposed adjacent to the second magnetic pole. The second magnetic pole has a magnetic flux density satisfying(X50/X0)>(Y50/Y0)where X0 is a distance from a position B.sub.p of a maximum magnetic flux density of a one pole to a boundary between the one pole and the upstream adjacent magnetic pole, measured along the circumference of the developer carrying member; Y0 is a distance from the position B.sub.p to a boundary between the one magnetic pole and the downward adjacent magnetic pole, measured along the circumferential periphery of the developer carrying member; X50 and Y50 are distances from the position B.sub.p to the upstream and downstream positions where the magnetic flux density by the one magnetic pole is one half the maximum magnetic flux density, measured along the circumferential periphery of the developer carrying member.
摘要翻译：用于显影形成在图像承载部件上的静电潜像的显影装置包括可旋转的显影剂承载部件，用于在显影剂容器中供给显影剂并将显影剂运送通过显影区。磁体固定地设置在显影剂承载构件中。磁体具有用于在显影区域中形成磁场的第一磁极，相对于显影剂承载构件的旋转方向设置在其下方并具有与其相反的磁极性的第二磁极，以及设置在下游的第三磁极的第二磁极相对于该方向并邻近第二磁极设置。第二磁极具有满足（X50 / X0）>（Y50 / Y0）的磁通密度，其中X0是从一极的最大磁通密度到一极和上游之间的边界的位置Bp的距离沿着显影剂承载构件的圆周测量的相邻磁极; Y0是沿着显影剂承载构件的圆周边缘测量的距离位置Bp到一个磁极和向下相邻磁极之间的边界的距离; X50和Y50是从位置Bp到上游和下游位置的距离，其中一个磁极的磁通密度是沿着显影剂承载构件的圆周边缘测量的最大磁通密度的一半。

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