公开(公告)号：US5424814A

公开(公告)日：1995-06-13

申请号：US998667

申请日：1992-12-30

申请人： Koji Suzuki ,  Katsuhiro Aoki ,  Yuichi Ueno ,  Akira Sawada ,  Naoki Iwata ,  Takatsugu Fujishiro ,  Shigeki Sawa

发明人： Koji Suzuki ,  Katsuhiro Aoki ,  Yuichi Ueno ,  Akira Sawada ,  Naoki Iwata ,  Takatsugu Fujishiro ,  Shigeki Sawa

IPC分类号： G03G15/08 ,  G03G13/08

CPC分类号： G03G15/0806 ,  G03G2215/0861

摘要： A developing device for an image forming apparatus and using a one component type developer. The developer is transferred from a developer supply member to a developer carrier which are so rotated as to move in the same direction at a position where they contact each other. This prevents the developer from a toner storing section from directly reaching part of the developer carrier having moved away from the contact position despite the movement of the developer supply member. Conductive portions connected to ground and dielectric portions each having a small area are distributed regularly or irregularly on the surface of the developer carrier. Such a surface of the developer carrier is charged by friction by the developer supply member with the result that a great number of microfields are formed in the vicinity of the developer carrier. The microfields allow only the developer sufficiently charged by friction at the contact position to form multiple layers on the surface of the developer carrier. Consequently, the toner with a desired amount of charge and containing a minimum of uncharged toner can form multiple layers on the developer carrier and is transferred to an image carrier.

摘要翻译： 一种用于图像形成装置和使用单组分型显影剂的显影装置。 显影剂从显影剂供应构件转移到显影剂载体，显影剂载体如此旋转以在它们彼此接触的位置沿相同方向移动。 这防止显影剂供应构件的移动而使调色剂存储部分的显影剂直接到达显影剂载体的已远离接触位置的部分。 连接到接地的导电部分和各自具有小面积的电介质部分规则地或不规则地分布在显影剂载体的表面上。 显影剂载体的这种表面由显影剂供应构件的摩擦带电，结果是在显影剂载体附近形成大量的微场。 微场仅允许在接触位置处通过摩擦力充分充电的显影剂在显影剂载体的表面上形成多个层。 因此，具有期望量的电荷并且含有最少不带电调色剂的调色剂可以在显影剂载体上形成多个层并被转印到图像载体上。

公开(公告)号：US5339141A

公开(公告)日：1994-08-16

申请号：US18258

申请日：1993-02-16

申请人： Koji Suzuki ,  Yuichi Ueno ,  Katsuhiro Aoki ,  Naoki Iwata ,  Akira Sawada ,  Takatsugu Fujishiro

发明人： Koji Suzuki ,  Yuichi Ueno ,  Katsuhiro Aoki ,  Naoki Iwata ,  Akira Sawada ,  Takatsugu Fujishiro

IPC分类号： G03G15/08 ,  G03G21/00

CPC分类号： G03G15/0818

摘要： A developing device applicable to an electrophotographic copier, facsimile transceiver, laser printer or similar image forming apparatus and having a developing roller for carrying a nonmagnetic single component type developer, i.e., a toner and a toner supply roller for supplying the toner to the developing roller. The developing roller has dielectric portions and conductive portions each having a small area and distributed together on the surface thereof. The conductive portions are connected to ground and have a volume resistivity of 10.sup.6 .OMEGA.cm or below. The toner supply roller is made up of a metallic core and an elastic foam layer provided on the core and having conductivity and a predetermined frictional charging characteristic. A potential difference is set up between the developing roller and the toner supply roller to generate electric fields which act on a frictionally charged toner as a force directed from the toner supply roller toward the developing roller. Micropores existing in the surface of the toner supply roller have a depth and a size selected in such a manner as not to disturb microfields formed by frictional charges deposited on the dielectric portions. The two different kinds of electric fields exist together to enhance the supply of charged toner. To eliminate leaks between the two rollers, one of the rollers is semiconductive while the other roller is conductive, and use is made of a toner whose resistance is greater than predetermined one.

摘要翻译： 一种适用于电子照相复印机，传真收发机，激光打印机或类似图像形成装置的显影装置，并且具有用于承载非磁性单组分型显影剂的显影辊，即用于将调色剂供给到显影辊的调色剂和调色剂供应辊 。 显影辊具有各自具有小面积并且在其表面上分布在一起的电介质部分和导电部分。 导电部分连接到地面上，体积电阻率为10 6欧姆·厘米或以下。 调色剂供应辊由金属芯和设置在芯上的弹性泡沫层构成，具有导电性和预定的摩擦带电特性。 在显影辊和调色剂供应辊之间建立电位差，以产生作用于摩擦带电的调色剂的电场，作为从调色剂供应辊朝向显影辊的力。 存在于调色剂供应辊的表面中的微孔具有选择的深度和尺寸，以便不会妨碍沉积在电介质部分上的摩擦电荷形成的微场。 两种不同的电场一起存在，以增强带电调色剂的供应。 为了消除两个辊之间的泄漏，其中一个辊是半导体的，而另一个辊是导电的，并且使用电阻大于预定的调色剂。

公开(公告)号：US5674408A

公开(公告)日：1997-10-07

申请号：US566592

申请日：1995-12-04

申请人： Koji Suzuki ,  Hiroshi Takashima ,  Shigekazu Enoki ,  Naoki Iwata ,  Yuichi Ueno

发明人： Koji Suzuki ,  Hiroshi Takashima ,  Shigekazu Enoki ,  Naoki Iwata ,  Yuichi Ueno

IPC分类号： G03G15/08 ,  B44C1/22

CPC分类号： G03G15/0818 ,  G03G2215/0863

摘要： A developer carrier capable of forming microfields on the surface thereof and a method of producing such a developer carrier. A great amount of sufficiently charged one-component developer is carried on the surface of the developer carrier by the microfields and transported to a developing station for developing an electrostatic latent image. The developer carrier has a simple structure and is easy and economical to produce.

摘要翻译： 能够在其表面上形成微场的显影剂载体和制备这种显影剂载体的方法。 大量充足电的单组分显影剂通过微场承载在显影剂载体的表面上，并被运送到用于显影静电潜像的显影站。 显影剂载体具有简单的结构，并且易于生产。

公开(公告)号：US5451713A

公开(公告)日：1995-09-19

申请号：US242438

申请日：1994-05-13

申请人： Koji Suzuki ,  Shigekazu Enoki ,  Hiroshi Takashima ,  Naoki Iwata ,  Yuichi Ueno

发明人： Koji Suzuki ,  Shigekazu Enoki ,  Hiroshi Takashima ,  Naoki Iwata ,  Yuichi Ueno

IPC分类号： G03G15/08 ,  G03G15/06

CPC分类号： G03G15/0818 ,  G03G15/0806 ,  G03G2215/0614 ,  G03G2215/0636

摘要： A developing device develops a latent image electrostatically formed on an image carrier in a developing region to produce a corresponding visible image. The developing device includes a rotatable developer carrier for carrying a developer to the developing region and a charging device for forming small closed electric fields in the vicinity of the surface of the developer carrier. The developer is deposited on the surface of the developer carrier by the small closed electric fields. The developer carrier comprises a conductive base and dielectric bodies fixedly buried in recesses formed in the conductive base with each of the dielectric bodies having a predetermined cross-section which extends in a direction of a line normal to the surface of the developer carrier. Also, the developer carrier has a photoconductive surface which is charged by a charging device and selectively illuminated by an illuminating device to deposit a charge on the photoconductive surface which forms a great number of microfields on the photoconductive surface.

摘要翻译： 显影装置显影静电地形成在显影区域中的图像载体上，以产生相应的可视图像。 显影装置包括用于将显影剂携带到显影区域的可旋转显影剂载体和用于在显影剂载体的表面附近形成小的封闭电场的充电装置。 显影剂通过小的封闭电场沉积在显影剂载体的表面上。 显影剂载体包括固定地埋在形成在导电基底中的凹槽中的导电基底和介电体，其中每个介电体具有在垂直于显影剂载体表面的线的方向上延伸的预定横截面。 此外，显影剂载体具有由充电装置充电并由照明装置选择性照射的光电导表面，以在光电导表面上沉积电荷，该光电导表面在光电导表面上形成大量微场。

公开(公告)号：US5315061A

公开(公告)日：1994-05-24

申请号：US874216

申请日：1992-04-27

申请人： Koji Suzuki ,  Shigekazu Enoki ,  Hiroshi Takashima ,  Naoki Iwata ,  Yuichi Ueno

发明人： Koji Suzuki ,  Shigekazu Enoki ,  Hiroshi Takashima ,  Naoki Iwata ,  Yuichi Ueno

IPC分类号： G03G15/08 ,  G03G15/06

CPC分类号： G03G15/0818 ,  G03G15/0806 ,  G03G2215/0614 ,  G03G2215/0636

摘要： A developing apparatus using a developer carrier which is capable of forming microfields on the surface of the carrier. A great amount of sufficiently charged one-component developer is deposited on the surface of the developer carrier by the microfields and transported to a developing region to be supplied to an electrostatic latent image. The developer carrier has a plurality of surface portions, each having a particular characteristic, such that at least one surface portion holds a first charge while at least another surface portion holds a second charge that is equal to and of an opposite polarity to the first charge.

摘要翻译： 一种使用能够在载体的表面上形成微场的显影剂载体的显影装置。 大量充足电的单组分显影剂通过微场沉积在显影剂载体的表面上并被输送到显影区域以供应到静电潜像。 显影剂载体具有多个表面部分，每个表面部分具有特定的特征，使得至少一个表面部分保持第一电荷，同时至少另一个表面部分保持与第一电荷相等且相反极性的第二电荷 。

公开(公告)号：US5311263A

公开(公告)日：1994-05-10

申请号：US977172

申请日：1992-11-16

申请人： Koji Suzuki ,  Naoki Iwata ,  Yuichi Ueno ,  Shigekazu Enoki ,  Junko Tomita

发明人： Koji Suzuki ,  Naoki Iwata ,  Yuichi Ueno ,  Shigekazu Enoki ,  Junko Tomita

IPC分类号： G03G15/06 ,  G03G15/08 ,  G03G15/09

CPC分类号： G03G15/0928

摘要： A developing apparatus for image forming equipment capable of insuring images with high resolution while preserving tonality. A developing sleeve is provided with conductive portions and insulative portions on its surface by knurling. A magnetic roller is accommodated in the sleeve to constitute a developing roller. A toner supply roller is held in contact with the developing sleeve. A doctor blade is disposed above and spaced apart by a predetermined distance from the developing sleeve and made of a magnetic material. Bias applying means applies an alternating voltage to the sleeve to effect reversal development.

摘要翻译： 一种用于图像形成设备的显影装置，其能够在保持色调的同时保证高分辨率的图像。 显影套筒通过滚花在其表面上设有导电部分和绝缘部分。 磁性辊容纳在套筒中以构成显影辊。 调色剂供应辊与显影套筒保持接触。 刮刀布置在显影套筒的上方并与之隔开预定距离并由磁性材料制成。 偏压施加装置向套筒施加交流电压以实现反转发展。

公开(公告)号：US5245391A

公开(公告)日：1993-09-14

申请号：US862002

申请日：1992-04-01

申请人： Koji Suzuki ,  Naoki Iwata ,  Yuichi Ueno ,  Shigekazu Enoki ,  Junko Tomita

发明人： Koji Suzuki ,  Naoki Iwata ,  Yuichi Ueno ,  Shigekazu Enoki ,  Junko Tomita

IPC分类号： G03G15/06 ,  G03G15/08

CPC分类号： G03G15/0806 ,  G03G15/065

摘要： A developing device incorporated in an image forming apparatus and having a developing roller or similar image carrier for transporting a developer to a photoconductive element or similar image carrier to develop an electrostatic latent image formed on the image carrier. The developing roller is configured to form microfields on the surface thereof. An alternating voltage is applied to the developing roller as a bias voltage for development to thereby deposit a non-magnetic toner on the surface of the roller. Silica particles are admixed with the toner. The developing device is operable with an adequate developing bias at all times.

摘要翻译： 一种结合在图像形成装置中并具有用于将显影剂输送到光电导元件或类似图像载体的显影辊或类似图像载体的显影装置，以形成形成在图像载体上的静电潜像。 显影辊构造成在其表面上形成微场。 将交变电压施加到显影辊上作为用于显影的偏置电压，从而将非磁性调色剂沉积在辊的表面上。 二氧化硅颗粒与调色剂混合。 显影装置始终以足够的显影偏压工作。

公开(公告)号：US5239344A

公开(公告)日：1993-08-24

申请号：US753234

申请日：1991-08-30

申请人： Shigekazu Enoki ,  Naoki Iwata ,  Koji Suzuki ,  Yuichi Ueno ,  Junko Tomita

发明人： Shigekazu Enoki ,  Naoki Iwata ,  Koji Suzuki ,  Yuichi Ueno ,  Junko Tomita

IPC分类号： G03G15/08

CPC分类号： G03G15/0818

摘要： A method and apparatus for developing a latent image electrostatically formed on an image carrier by a developer carried on a developer carrier in a developing region where the image carrier and the developer carrier are located face-to-face. A great number of electric fields are produced on the surface of the developer carrier. An electric field is produced by a voltage applying device in the developing region. The movement of the developer is controlled by an electric field determined by the relationship between a potential deposited on the image carrier, a potential deposited on the developer carrier, and the electric field produced by the voltage applying device. A large number of first and second areas are formed on the surface of the developer carrier such that the first areas are charged to a predetermined potential and the second areas as set at a potential which is lower than the predetermined potential of the first areas in order to generate different level electric fields in the first and second areas. With this arrangement, higher quality images having constant density are formed as a well-balanced charging/discharging condition is developed between the toner and the toner supply roller of the device.

摘要翻译： 用于显影载体上显影剂承载在图像载体和显影剂载体面对面的显影剂载体上的显影剂静电地形成在潜像上的方法和装置。 在显影剂载体的表面上产生大量的电场。 由显影区域中的电压施加装置产生电场。 显影剂的移动通过由沉积在图像载体上的电位，沉积在显影剂载体上的电位与由施加电压产生的电场之间的关系确定的电场来控制。 大量的第一和第二区域形成在显影剂载体的表面上，使得第一区域被充电到预定电位，并且第二区域被设置为低于第一区域的预定电位的电位 以在第一和第二区域中产生不同级别的电场。 通过这种布置，在调色剂和设备的调色剂供应辊之间产生均衡的充电/放电条件，形成具有恒定密度的更高质量的图像。

公开(公告)号：US5220383A

公开(公告)日：1993-06-15

申请号：US861997

申请日：1992-04-01

申请人： Shigekazu Enoki ,  Koji Suzuki ,  Naoki Iwata ,  Yuichi Ueno ,  Junko Tomita

发明人： Shigekazu Enoki ,  Koji Suzuki ,  Naoki Iwata ,  Yuichi Ueno ,  Junko Tomita

IPC分类号： G03G15/08

CPC分类号： G03G15/0806

摘要： A developing device incorporated in an image forming apparatus and including a developing roller or similar developer carrier for transporting a developer to a developing region where it faces an image carrier, so as to develop a latent image electrostatically formed on the image carrier. The developer carrier has a first and a second substance different in charging characteristic from each other and exposed to the outside on the surface of the developer carrier in a regular or irregular pattern. At least one of the first and second substances is charged to predetermined polarity on the surface of the developer carrier to form a great number of microfields. Alternatively, the developer carrier may have a conductive base and a surface layer provided on the base and constituted by a conductive substance in which insulating particles are dispersed. At least the insulating particles are charged on the surface of the developer carrier to form a number of microfields. The movement of the developer is controlled by an electric field determined by a relation of a potential deposited on the image carrier, an electric field ascribable to the bias applied from a bias applying source, and an electric field developed on the developer carrier.

摘要翻译： 一种显影装置，其结合在图像形成装置中并且包括用于将显影剂输送到与图像载体相对的显影区域的显影辊或类似的显影剂载体，以便显影静电地形成在图像载体上。 显影剂载体具有彼此不同的充电特性的第一和第二物质，并以规则或不规则的图案在显影剂载体的表面上暴露于外部。 将第一和第二物质中的至少一种在显影剂载体的表面上充电至预定的极性，以形成大量的微场。 或者，显影剂载体可以具有导电性基材和设置在基材上的表面层，其由分散绝缘性粒子的导电性物质构成。 至少绝缘颗粒被充电在显影剂载体的表面上以形成多个微场。 显影剂的移动通过由沉积在图像载体上的电位的关系，归因于偏置施加源施加的偏压的电场和在显影剂载体上产生的电场确定的电场来控制。

公开(公告)号：US5741616A

公开(公告)日：1998-04-21

申请号：US339583

申请日：1994-11-14

申请人： Yasuo Hirano ,  Jun Aoto ,  Kazuo Nojima ,  Koji Suzuki ,  Hiroshi Takashima ,  Shigekazu Enoki ,  Yuichi Ueno ,  Naoki Iwata

发明人： Yasuo Hirano ,  Jun Aoto ,  Kazuo Nojima ,  Koji Suzuki ,  Hiroshi Takashima ,  Shigekazu Enoki ,  Yuichi Ueno ,  Naoki Iwata

IPC分类号： G03G15/08 ,  G03G13/06 ,  B32B5/16

CPC分类号： G03G15/0818 ,  G03G2215/0617 ,  G03G2215/0861 ,  Y10T428/259

摘要： A method of developing latent electrostatic images and a developer-bearing member for use in the method are disclosed, which method includes the steps of (a) forming numerous micro closed electric fields near the surface of a rotatable developer-bearing member which comprises an electroconductive support and a surface layer formed thereon comprising an electroconductive organic polymeric matrix and numerous minute charge-retainable insulating segments distributed at least one the surface of the surface layer, by electrically charging the surface of the charge-retainable insulating segments; (b) supplying a one-component type developer comprising toner particles to the rotatable developer-bearing member to hold the developer on the rotatable developer-bearing member to hold the developer on the rotatable developer-bearing member by the numerous micro closed electric fields; and (c) bringing the rotatable developer-bearing member near or into contact with a latent-electrostatic-image-bearing member which bears a latent electrostatic image to develop the latent electrostatic image with the one-component developer to a visible toner image.

摘要翻译： 公开了一种显影静电图像显影方法和用于该方法的显影剂承载部件，该方法包括以下步骤：（a）在可旋转的显影剂承载部件的表面附近形成许多微封闭电场，其包括导电 支撑体和其上形成的表面层，其通过对电荷保持绝缘段的表面进行充电而包含导电有机聚合物基体和分布在表面层的至少一个表面上的许多微小电荷可保持绝缘段; （b）将包含调色剂颗粒的单组分型显影剂供应到可旋转的显影剂承载构件，以将显影剂保持在可转动的显影剂承载构件上，以通过许多微封闭电场将显影剂保持在可转动的显影剂承载构件上; 和（c）使可转动的显影剂承载部件靠近或与承载有静电潜像的静电潜像承载部件接触，以使单组分显影剂显影静电潜像成为可见的调色剂图像。