公开(公告)号：US06285848B1

公开(公告)日：2001-09-04

申请号：US09092935

申请日：1998-06-08

申请人： Shuichi Aita ,  Kenji Okado ,  Toshiyuki Ugai ,  Ryoichi Fujita ,  Fumihiro Arahira ,  Kiyoshi Mizoe ,  Yoshifumi Hano

发明人： Shuichi Aita ,  Kenji Okado ,  Toshiyuki Ugai ,  Ryoichi Fujita ,  Fumihiro Arahira ,  Kiyoshi Mizoe ,  Yoshifumi Hano

IPC分类号： G03G1502

CPC分类号： G03G15/0241 ,  G03G21/0064 ,  G03G2215/022

摘要： An electrophotographic apparatus includes an electrophotographic photosensitive member, and (i) a charger, (ii) an imagewise exposure device, (iii) a developing device and (iv) a transfer device, disposed in this order opposite to the photosensitive member. The charger includes a charging member including magnetic particles disposed in contact with the photosensitive member so as to charge the photosensitive member based on a voltage received thereby. The magnetic particles are surface-coated with a coupling agent having a linear alkyl group having a least 6 carbon atoms. The developing device also functions to recover residual toner remaining on the photosensitive member processing by the transfer device and the charger. Because of the coating with such a specific coupling agent, the charging magnetic particles can exhibit good triboelectric changeability for the transfer residual toner for a long period.

摘要翻译： 电子照相设备包括电子照相感光构件，以及（i）充电器，（ii）成像曝光装置，（iii）以与感光构件相对的顺序设置的显影装置和（iv）转印装置。 充电器包括充电构件，其包括与感光构件接触设置的磁性颗粒，以便基于由此接收的电压对感光构件充电。 磁性颗粒用具有至少6个碳原子的直链烷基的偶联剂进行表面涂覆。 显影装置还用于恢复由转印装置和充电器处理的感光构件上残留的残留调色剂。 由于用这种特殊的偶联剂进行涂布，所以带电磁性颗粒可以长时间显示转印残留调色剂的良好的摩擦带电性。

公开(公告)号：US5790926A

公开(公告)日：1998-08-04

申请号：US623187

申请日：1996-03-28

申请人： Kiyoshi Mizoe ,  Shuichi Aita ,  Fumihiro Arahira ,  Yoshifumi Hano

发明人： Kiyoshi Mizoe ,  Shuichi Aita ,  Fumihiro Arahira ,  Yoshifumi Hano

IPC分类号： G03G15/02

CPC分类号： G03G15/0233

摘要： A charging member includes a conductive substrate and a surface layer which is to be brought into contact with a member to be charged. On the surface layer a raised fiber entangled material is provided.

摘要翻译： 充电构件包括导电衬底和要与要充电的构件接触的表面层。 在表面层上提供凸起的纤维缠结材料。

公开(公告)号：US5940662A

公开(公告)日：1999-08-17

申请号：US801921

申请日：1997-02-14

申请人： Yoshifumi Hano ,  Shuichi Aita ,  Tsutomu Kukimoto ,  Tsuyoshi Takiguchi ,  Fumihiro Arahira ,  Yuji Ishihara ,  Kiyoshi Mizoe

发明人： Yoshifumi Hano ,  Shuichi Aita ,  Tsutomu Kukimoto ,  Tsuyoshi Takiguchi ,  Fumihiro Arahira ,  Yuji Ishihara ,  Kiyoshi Mizoe

IPC分类号： G03G15/02

CPC分类号： G03G15/0241 ,  G03G2215/022

摘要： A charging apparatus which comprises an electrophotographic photosensitive member and a charging member which comprises magnetic particles and placed in contact with the electrophotographic photosensitive member to charge the electrophotographic photosensitive member upon application of a voltage, wherein each magnetic particle has a surface layer containing a polyolefin resin of which weight average molecular weight is 10,000 or more, and has a volume resistivity of 1.times.10.sup.4 to 1.times.10.sup.11 .OMEGA.cm.

摘要翻译： 一种充电装置，其包括电子照相感光构件和充电构件，所述充电构件包括磁性颗粒并与电子摄影感光构件接触以在施加电压时对电子照相感光构件充电，其中每个磁性颗粒具有含有聚烯烃树脂的表面层 其重均分子量为10,000以上，体积电阻率为1×10 14〜1×10 11欧米高。

公开(公告)号：US5805961A

公开(公告)日：1998-09-08

申请号：US625034

申请日：1996-03-29

申请人： Kiyoshi Mizoe ,  Shuichi Aita ,  Fumihiro Arahira ,  Yoshifumi Hano

发明人： Kiyoshi Mizoe ,  Shuichi Aita ,  Fumihiro Arahira ,  Yoshifumi Hano

IPC分类号： G03G15/02

CPC分类号： G03G15/0233 ,  G03G2215/023

摘要： A charging member, which electrically charges an object to be charged by being placed in contact with the object to be charged and by being applied with a voltage, is provided where the charging member includes an electroconductive base and brush bristles to come into contact with the object to be charged, and the brush bristles include at least one of etching fibers and divided fibers.

摘要翻译： 提供了一种充电构件，其通过与被充电物体接触而被施加电荷并且被施加电压而对要充电的物体进行充电，其中充电构件包括导电基底和刷毛以与其接触 物体被加载，刷毛包括蚀刻纤维和分割光纤中的至少一个。

公开(公告)号：US5724632A

公开(公告)日：1998-03-03

申请号：US767802

申请日：1996-12-17

申请人： Fumihiro Arahira ,  Shuichi Aita ,  Tsutomu Kukimoto ,  Kiyoshi Mizoe ,  Yoshifumi Hano

发明人： Fumihiro Arahira ,  Shuichi Aita ,  Tsutomu Kukimoto ,  Kiyoshi Mizoe ,  Yoshifumi Hano

IPC分类号： G03G15/02

CPC分类号： G03G15/0241 ,  G03G2215/022

摘要： A charging apparatus or an electrophotographic apparatus includes an electrophotographic photosensitive member including a photosensitive layer provided on a conductive supporting member, and a charging member including magnetic particles, disposed to be in contact with the electrophotographic photosensitive member, for charging the electrophotographic photosensitive member when a voltage is applied to the charging member. The layer of the electrophotographic photosensitive member most separated from the conductive supporting member has a volume resistivity between 10.sup.8 .OMEGA..cm and 10.sup.15 .OMEGA..cm, and the magnetic particles have a hygroscopic property such that the ratio H/L of the maximum value H to the minimum value L of the amount of water contained within the particles is at least 1 and less than 4.

摘要翻译： 充电装置或电子照相装置包括电子照相感光构件，其包括设置在导电支撑构件上的感光层，以及包含磁性颗粒的充电构件，设置为与电子照相感光构件接触，用于在电子照相感光构件充电时 向充电部件施加电压。 与导电支撑构件最分离的电子照相感光构件的层的体积电阻率为108欧姆·厘米到1015欧姆·厘米，磁性颗粒具有吸湿性，使得最大值H / 包含在颗粒内的水的量的最小值L至少为1且小于4。

公开(公告)号：US6026260A

公开(公告)日：2000-02-15

申请号：US175327

申请日：1998-10-20

申请人： Shuichi Aita ,  Fumihiro Arahira ,  Kiyoshi Mizoe ,  Toshio Takamori

发明人： Shuichi Aita ,  Fumihiro Arahira ,  Kiyoshi Mizoe ,  Toshio Takamori

IPC分类号： G03G15/02

CPC分类号： G03G15/0241 ,  G03G2215/022 ,  Y10S430/102

摘要： An electrophotographic apparatus includes: an electrophotographic photosensitive member, a charging device including a charging member formed of magnetic particles and disposed contactable to the photosensitive member so as to charge the photosensitive member based on a voltage applied thereto, exposure device, developing device, and a transfer device. The magnetic particles exhibit a good charging ability for a long period and therefore provide a good continuous image-forming performance because they are formed of ferrite particles including a ferrite having a very limited composition represented by the formula of:(MnO).sub.x (MgO).sub.y (Fe.sub.2 O.sub.3).sub.z,wherein x, y and z are numbers satisfying x+y+z.ltoreq.1, 0.2

摘要翻译： 电子照相设备包括：电子照相感光构件，充电装置，其包括由磁性颗粒形成的充电构件，并且设置成与感光构件接触，以便基于施加于其上的电压对感光构件充电，曝光装置，显影装置和 传输设备。 磁性颗粒长时间显示出良好的充电能力，因此提供了良好的连续成像性能，因为它们由铁氧体颗粒形成，该铁氧体颗粒包括由以下通式表示的非常有限组成的铁素体：（MnO）x（MgO） y（Fe 2 O 3）z，其中x，y和z是满足x + y + z 1，0.2

公开(公告)号：US6157801A

公开(公告)日：2000-12-05

申请号：US328796

申请日：1999-06-09

申请人： Shuichi Aita ,  Fumihiro Arahira ,  Kiyoshi Mizoe ,  Toshio Takamori

发明人： Shuichi Aita ,  Fumihiro Arahira ,  Kiyoshi Mizoe ,  Toshio Takamori

IPC分类号： G03G15/02

CPC分类号： G03G15/0241 ,  G03G2215/022

摘要： A magnetic particle for charging is disclosed. The magnetic particle includes magnetic particles having particle diameters of 5 .mu.m or more. The magnetic particles having particle diameters of 5 .mu.m or more have a standard deviation of short-axis length/long-axis length of 0.08 or more, and a volume resistance value in the range of 10.sup.4 to 10.sup.9 .OMEGA.cm. Also, provided are a charging member, a charging device, a process cartridge and an electrophotographic apparatus, using the magnetic particle.

摘要翻译： 公开了用于充电的磁性颗粒。 磁性粒子包括粒径为5μm以上的磁性粒子。 粒径为5μm以上的磁性粒子的短轴长/长轴长度的标准偏差为0.08以上，体积电阻值为104〜109欧姆·厘米。 此外，提供了使用磁性颗粒的充电构件，充电装置，处理盒和电子照相设备。

公开(公告)号：US06405007B1

公开(公告)日：2002-06-11

申请号：US09592548

申请日：2000-06-12

申请人： Shuichi Aita ,  Fumihiro Arahira ,  Kiyoshi Mizoe

发明人： Shuichi Aita ,  Fumihiro Arahira ,  Kiyoshi Mizoe

IPC分类号： G03G1302

CPC分类号： G03G15/0241 ,  G03G2215/022 ,  G03G2221/183

摘要： Magnetic particles for charging an image-bearing member electrostatically. The charging magnetic particles have magnetic particles, first surface coat layers containing a first surface coating agent and covering the surfaces of the magnetic particles and second surface coat layers containing a second surface coating agent and covering the first surface coat layers. The charging magnetic particles contain magnetic particles for charging which have a maximum chord length of 5 &mgr;m or larger, and the magnetic particles for charging which have a maximum chord length of 5 &mgr;m or larger having a minor-axis length/major-axis length standard deviation of 0.08 or more. Also, a process for producing the charging magnetic particles is disclosed together with a charging member, a process cartridge and an image forming apparatus which make use of the charging magnetic particles.

摘要翻译： 用于静电充电图像承载部件的磁性颗粒。 充电磁性颗粒具有磁性颗粒，第一表面涂层含有第一表面涂层并覆盖磁性颗粒表面，第二表面涂层含有第二表面涂层并覆盖第一表面涂层。 充电磁性粒子含有最大弦长5mum以上的充电用磁性粒子，具有短轴长/长轴长度标准的最大弦长为5μm以上的充电用磁性粒子 偏差0.08以上。 此外，与充电部件，处理盒和利用充电磁性颗粒的成像设备一起公开了一种用于制造充电磁性颗粒的方法。

公开(公告)号：US5715501A

公开(公告)日：1998-02-03

申请号：US770408

申请日：1997-01-22

申请人： Shuichi Aita ,  Toshiyuki Yoshihara ,  Motoo Urawa ,  Tsutomu Kukimoto ,  Yoshifumi Hano

发明人： Shuichi Aita ,  Toshiyuki Yoshihara ,  Motoo Urawa ,  Tsutomu Kukimoto ,  Yoshifumi Hano

IPC分类号： G03G5/00 ,  G03G5/147 ,  G03G9/08 ,  G03G9/097 ,  G03G13/08 ,  G03G15/00

CPC分类号： G03G15/75 ,  G03G13/08 ,  G03G5/005 ,  G03G5/14726 ,  G03G9/0819 ,  G03G9/0821 ,  G03G9/0823 ,  G03G9/09708 ,  G03G2221/183

摘要： An image forming method includes forming an electrostatic latent image on an image bearing member having a surface of which contact angle with water is at least 90.degree., forming a toner layer on a toner carrying member, bringing the toner layer into contact with the surface of the image bearing member on which the electrostatic latent image has been formed, while rotating the image bearing member and the toner carrying member reciprocally, and developing the electrostatic latent image by the use of the toner of the toner layer to form a toner image.

摘要翻译： 图像形成方法包括在具有与水的接触角至少为90°的表面的图像承载部件上形成静电潜像，在调色剂承载部件上形成调色剂层，使调色剂层与 图像承载部件，其上形成有静电潜像，同时使图像承载部件和调色剂承载部件往复地旋转，并且通过使用调色剂层的调色剂使静电潜像显影以形成调色剂图像。

公开(公告)号：US5576810A

公开(公告)日：1996-11-19

申请号：US536843

申请日：1995-09-29

申请人： Shuichi Aita ,  Toshiyuki Yoshihara ,  Tsutomu Kukimoto ,  Satoshi Yoshida ,  Yoshifumi Hano ,  Yuki Nishio

发明人： Shuichi Aita ,  Toshiyuki Yoshihara ,  Tsutomu Kukimoto ,  Satoshi Yoshida ,  Yoshifumi Hano ,  Yuki Nishio

IPC分类号： G03G15/32 ,  G03G21/00 ,  G03G15/04

CPC分类号： G03G15/326 ,  G03G15/04045 ,  G03G21/0064 ,  G03G2221/0005

摘要： An electrophotographic image forming method including a toner image transfer step and eliminating an independent step for cleaning transfer residual toner is operated without causing ghost images and with good gradation and dot reproducibilities. In the method, the photosensitive member is exposed at an exposure intensity which is at least a minimum exposure intensity and below a maximum exposure intensity. The minimum exposure intensity is determined on a surface potential-exposure intensity characteristic curve of the photosensitive member by determining a first slope S1 of a straight line connecting a point giving a dark part potential Vd and a point giving a value of (Vd+ a residual potential Vr)/2, determining a contact point between a tangent line having a slope of S1/20 and the surface potential-exposure intensity characteristic curve and determining the minimum exposure intensity as an exposure intensity at the contact point. The maximum exposure intensity is determined as 5 times a half-attenuation exposure intensity.

摘要翻译： 包括调色剂图像转印步骤和消除用于清洁转印残余调色剂的独立步骤的电子照相图像形成方法被操作而不引起重影并具有良好的灰度和点重现性。 在该方法中，感光构件以至少最小曝光强度并低于最大曝光强度的曝光强度曝光。 通过确定连接提供暗部电位Vd的点的直线的第一斜率S1和给出（Vd + a残留电位）的点，确定感光构件的表面电位 - 曝光强度特性曲线上的最小曝光强度 Vr）/ 2，确定具有S1 / 20的斜率的切线与表面电位 - 曝光强度特性曲线之间的接触点，并确定最小曝光强度作为接触点处的曝光强度。 最大曝光强度被确定为半衰减曝光强度的5倍。