公开(公告)号：US20170146925A1

公开(公告)日：2017-05-25

申请号：US15346018

申请日：2016-11-08

申请人： Masato TSUJI ,  Tetsumaru FUJITA ,  Yuji NAGATOMO ,  Mitsutoshi KICHISE ,  Yutaro KAKU ,  Kazuki MATSUMOTO

发明人： Masato TSUJI ,  Tetsumaru FUJITA ,  Yuji NAGATOMO ,  Mitsutoshi KICHISE ,  Yutaro KAKU ,  Kazuki MATSUMOTO

IPC分类号： G03G15/08

CPC分类号： G03G15/0812

摘要： A developing device includes a toner bearer to rotate while bearing toner and a toner regulator including a bend on a free end side. The bend is disposed in contact with a surface of the toner bearer and defines a regulation nip to adjust an amount of the toner on the toner bearer. The toner regulator further includes an area having a water contact angle greater than or equal to 70 degrees. The area having the water contact angle includes, at least, a downstream end of the bend in a rotation direction of the toner bearer.

公开(公告)号：US09002243B2

公开(公告)日：2015-04-07

申请号：US14208406

申请日：2014-03-13

申请人： Tetsumaru Fujita ,  Ryuji Inoue ,  Rie Mitani

发明人： Tetsumaru Fujita ,  Ryuji Inoue ,  Rie Mitani

IPC分类号： G03G15/08

CPC分类号： G03G15/0877 ,  G03G15/0812 ,  G03G15/0818

摘要： A developing device includes a toner bearer including a surface in which multiple recesses having a cross-sectional void rate of 50% or smaller are formed, a toner supply member to supply toner to the toner bearer, and a developer regulator disposed facing or in contact with the toner bearer and including a bent tip portion. The toner bearer has a surface roughness Ra within a range from 1.0 μm to 2.0 μm, and a surface area ratio within a range from 2.0 to 4.0. The developing device uses polymerized toner having a weight average particle diameter of 8.0 μm or smaller and an average circularity of 0.98 or greater.

摘要翻译： 显影装置包括调色剂承载件，该调色剂载体包括其中形成多个具有50％或更小的横截面空隙率的凹槽的表面，向调色剂承载体供应调色剂的调色剂供应构件以及面向或接触的显影剂调节器 具有调色剂载体并且包括弯曲的尖端部分。 调色剂载体的表面粗糙度Ra在1.0μm至2.0μm的范围内，表面积比在2.0至4.0的范围内。 显影装置使用重均粒径为8.0μm以下且平均圆形度为0.98以上的聚合调色剂。

公开(公告)号：US20140153958A1

公开(公告)日：2014-06-05

申请号：US14085114

申请日：2013-11-20

申请人： Yasunobu OGATA ,  Tetsumaru Fujita ,  Rie Mitani ,  Takahiro Sanada

发明人： Yasunobu OGATA ,  Tetsumaru Fujita ,  Rie Mitani ,  Takahiro Sanada

IPC分类号： G03G15/08

CPC分类号： G03G15/0817

摘要： A sealing assembly to contact a rotator includes a sealing member to slidably contact a surface of an end of the rotator in an axial direction of the rotator. The sealing member has an end in a circumferential direction thereof to contact the surface of the rotator with a first pressure. The end in the circumferential direction is fixed to a bearing surface formed on the opening on at least one of an upstream side and a downstream side in a rotation direction of the rotator. The sealing member has an intermediate portion between an upstream end and a downstream end in the circumferential direction to contact the surface of the rotator with a second pressure lower than the first pressure.

摘要翻译： 接触旋转体的密封组件包括密封构件，以在旋转体的轴向方向上可滑动地接触转子的端部的表面。 密封构件在其圆周方向上具有第一压力与转子的表面接触的端部。 在旋转体的旋转方向的上游侧和下游侧的至少一个上，沿圆周方向的端部固定在形成在开口上的支承面上。 密封构件具有在周向上的上游端和下游端之间的中间部分，以与第一压力相比低的第二压力与转子的表面接触。

公开(公告)号：US08483583B2

公开(公告)日：2013-07-09

申请号：US13025266

申请日：2011-02-11

申请人： Atsushi Takehara ,  Naoki Nakatake ,  Tetsumaru Fujita ,  Tomohiro Kubota ,  Kohta Sakaya

发明人： Atsushi Takehara ,  Naoki Nakatake ,  Tetsumaru Fujita ,  Tomohiro Kubota ,  Kohta Sakaya

IPC分类号： G03G15/08

CPC分类号： G03G15/5058 ,  G03G15/0131 ,  G03G15/0875 ,  G03G15/0877 ,  G03G2215/00059

摘要： Toner is supplied from a toner container to a developing part that causes the toner to adhere to a latent image formed on a latent image carrying member and develops the latent image, a pre-toner-supply operation of supplying a predetermined amount of toner to the developing part is carried out, a fog detecting image is formed and fog is detected in the fog detecting image, a toner supply amount to be supplied to the developing part is determined based on the fog detected in the detecting and an operational status of the developing part since the toner was supplied to the developing part the last time, and the toner supply amount of the toner determined in the determining is supplied to the developing part.

摘要翻译： 调色剂从调色剂容器供应到显影部分，使得调色剂粘附到潜像承载部件上形成的潜像并显影潜像，将预定量的调色剂供应到预调色剂供应操作 进行雾化检测图像，并且在雾化检测图像中检测出灰雾，根据检测中检测到的雾和显影部分的操作状态来确定要供应到显影部分的调色剂供应量 最后一次将调色剂供应到显影部分，并且将在确定中确定的调色剂的调色剂供应量提供给显影部分。

公开(公告)号：US08036573B2

公开(公告)日：2011-10-11

申请号：US12187021

申请日：2008-08-06

申请人： Hidekazu Shono ,  Naoki Nakatake ,  Tetsumaru Fujita

发明人： Hidekazu Shono ,  Naoki Nakatake ,  Tetsumaru Fujita

IPC分类号： G03G21/00

CPC分类号： G03G15/0233 ,  G03G21/0047 ,  G03G21/0064 ,  G03G2215/021

摘要： An image forming apparatus includes an image carrying member, an image writing unit, a development unit, a transfer device, a charging device, and a toner charge control device. The image writing unit forms a latent image on the image carrying member, which is developed as a toner image by the development unit, and the toner image is transferred to a transfer member by the transfer device. The charging device charges the image carrying member and toner on the image carrying member. The toner charge control device, controls a polarity of charge and charging voltage level of toner remaining on the image carrying member. The toner charge control device includes an endless belt having a surface made of a conductive material, a support member extending the endless belt pressed against the image carrying member, and a bias voltage applicator for supplying a voltage to the surface of the endless belt.

摘要翻译： 图像形成装置包括图像承载构件，图像写入单元，显影单元，转印装置，充电装置和调色剂充电控制装置。 图像写入单元在图像承载构件上形成潜像，其通过显影单元显影为调色剂图像，并且调色剂图像通过转印装置转印到转印部件。 充电装置对图像承载部件和图像承载部件上的调色剂进行充电。 调色剂充电控制装置控制剩余在图像承载部件上的调色剂的充电和充电电压电平的极性。 调色剂充电控制装置包括具有由导电材料制成的表面的环形带，将压靠在图像承载构件上的环形带延伸的支撑构件，以及用于向环形带的表面提供电压的偏置电压施加器。

公开(公告)号：US20110194864A1

公开(公告)日：2011-08-11

申请号：US13020405

申请日：2011-02-03

申请人： Naoki NAKATAKE ,  Atsushi Takehara ,  Tetsumaru Fujita ,  Tomohiro Kubota ,  Kohta Sakaya

发明人： Naoki NAKATAKE ,  Atsushi Takehara ,  Tetsumaru Fujita ,  Tomohiro Kubota ,  Kohta Sakaya

IPC分类号： G03G15/08

CPC分类号： G03G15/0877 ,  G03G15/0856 ,  G03G15/0862

摘要： A toner supplying method for supplying toner from a toner container to a developing part that causes toner to adhere to a latent image formed on a latent image carrying member and develops the latent image, includes detecting a toner amount in the developing part as being equal to or less than a predetermined toner amount value; forming a fog detecting image in a case where the toner amount in the developing part is equal to or less than the predetermined toner amount value, and detecting fog; and determining based on the detected fog whether to execute a toner ejecting process of ejecting the toner remaining in the developing part toward the latent image carrying member before supplying the toner to the developing part from the toner container.

摘要翻译： 一种用于将调色剂从调色剂容器供应到显影部分的调色剂供应方法，所述显影部分使调色剂粘附到潜像承载部件上形成的潜像并显影所述潜像，所述调色剂供应方法包括：检测所述显影部分中的调色剂量等于 或小于预定调色剂量值; 在显影部中的调色剂量等于或小于预定调色剂量值的情况下形成雾检测图像，并且检测雾; 以及基于检测到的雾化确定是否在从调色剂容器向显影部分供给调色剂之前，将剩余在显影部分中的调色剂喷射到潜像承载部件上的调色剂喷射处理。

公开(公告)号：US20110188896A1

公开(公告)日：2011-08-04

申请号：US13013224

申请日：2011-01-25

申请人： Kohta SAKAYA ,  Tomohiro Kubota ,  Tetsumaru Fujita ,  Atsushi Takehara ,  Naoki Nakatake

发明人： Kohta SAKAYA ,  Tomohiro Kubota ,  Tetsumaru Fujita ,  Atsushi Takehara ,  Naoki Nakatake

IPC分类号： G03G15/08

CPC分类号： G03G15/08

摘要： A developing unit includes: a developer carrier; a toner supplying member having a porous surface layer; a toner storage storing therein toner; a stirring member that is rotated to stir the toner; a toner amount detecting unit that detects an amount of the toner; a toner supplying unit that supplies new toner to the toner storage based on a detection result; and a toner removing member that removes the toner carried in the porous surface layer, wherein the toner removing member is arranged in a separable and contactable manner from and with the porous surface layer, and the developing unit has a stirring mode in which the toner removing member is brought into contact with the porous surface layer, and the toner supplying member is rotated while the stirring member is rotated to stir the toner.

摘要翻译： 显影单元包括：显影剂载体; 具有多孔表面层的调色剂供应构件; 存储有调色剂的调色剂储存器; 旋转以搅拌调色剂的搅拌构件; 调色剂量检测单元，其检测调色剂的量; 调色剂供应单元，其基于检测结果向调色剂存储器提供新的调色剂; 以及去除多孔表面层中承载的调色剂的调色剂去除构件，其中调色剂移除构件以与多孔表面层分离和接触的方式布置，并且显影单元具有搅拌模式，其中调色剂除去 与多孔表面层接触，并且调色剂供应构件在搅拌构件旋转的同时旋转以搅拌调色剂。

公开(公告)号：US07751753B2

公开(公告)日：2010-07-06

申请号：US11954309

申请日：2007-12-12

申请人： Yoshio Sakagawa ,  Tetsumaru Fujita ,  Yuji Nagatomo

发明人： Yoshio Sakagawa ,  Tetsumaru Fujita ,  Yuji Nagatomo

IPC分类号： G03G15/30 ,  G03G15/00

CPC分类号： G03G21/0035 ,  G03G21/0064

摘要： A cleanerless image forming apparatus configured to reduce the density unevenness of halftone images. The apparatus includes a photosensitive member, a charging roller device for uniformly charging the surface of the photosensitive member, an optical writing unit for forming latent images on the surface of the photosensitive member after uniform charging, a developing device for developing the latent toner image on the photosensitive member, a transfer unit for transferring the toner image to an intermediate transfer belt, and a brush member for trapping post-transfer residual toner adhering to the surface of the photosensitive member after passing through the transfer process by the transfer unit and before entering the developing process by the developing device, wherein the post-transfer residual toner is recovered within the developing device after re-transfer of the post-transfer residual toner within the brush member to the surface of the photosensitive member.

摘要翻译： 一种无清洁器的图像形成装置，被配置为减少半色调图像的浓度不均匀性。 该装置包括感光构件，用于均匀地充电感光构件的表面的充电辊装置，用于在均匀充电之后在感光构件的表面上形成潜像的光学书写单元，用于使潜像调色剂图像显影的显影装置 感光构件，用于将调色剂图像转印到中间转印带的转印单元和用于在通过转印单元的转印处理之后并且在进入之前捕获粘附到感光构件的表面上的转印后残留调色剂的刷构件 通过显影装置的显影过程，其中将转印后残留调色剂重新转印到感光构件的表面之前，将转印后残留调色剂回收到显影装置内。

公开(公告)号：US07725054B2

公开(公告)日：2010-05-25

申请号：US11954402

申请日：2007-12-12

申请人： Tetsumaru Fujita ,  Yoshio Sakagawa ,  Yuji Nagatomo

发明人： Tetsumaru Fujita ,  Yoshio Sakagawa ,  Yuji Nagatomo

IPC分类号： G03G15/02 ,  G03G21/00

CPC分类号： G03G15/0233 ,  G03G2215/025

摘要： An electrifying apparatus, a processing unit including the electrifying apparatus, and an image formation apparatus including the electrifying apparatus. The electrifying apparatus includes a conductive sheet for electrifying at least one of a surface of a photoconductor and toner adhered to the surface. The conductive sheet is specified to have a pure-water contact angle equal to or greater than 108 degrees, and to have a shore D hardness equal to or less than 65.

摘要翻译： 带电装置，包括通电装置的处理单元和包括通电装置的图像形成装置。 带电装置包括用于使感光体的表面和粘附到表面的调色剂中的至少一个带电的导电片。 导电片被规定为具有等于或大于108度的纯水接触角，并且具有等于或小于65的肖氏D硬度。

公开(公告)号：US07693459B2

公开(公告)日：2010-04-06

申请号：US11855687

申请日：2007-09-14

申请人： Tetsumaru Fujita ,  Yoshio Sakagawa ,  Yuji Nagatomo

发明人： Tetsumaru Fujita ,  Yoshio Sakagawa ,  Yuji Nagatomo

IPC分类号： G02G15/02 ,  G03G21/10

CPC分类号： G03G15/0233

摘要： A charging device and an image forming apparatus using the charging device. The charging device includes a charging member to uniformly charge a surface of a latent image bearing member in contact therewith, a charge bias application unit to apply a charge bias to the charging member, a conductive member to contact a surface of the charging member, and a different-valued bias application unit to apply a different-valued bias different from the charge bias to the conductive member. The image forming apparatus includes a latent image bearing member to bear a latent image, a latent image forming unit to form the latent image on the latent image bearing member, a development unit to develop the latent image with toner, and the charging device.

摘要翻译： 一种充电装置和使用该充电装置的图像形成装置。 充电装置包括：充电部件，用于使与其接触的潜像承载部件的表面均匀充电;充电偏压施加单元，用于向充电部件施加充电偏压;导电部件，用于接触充电部件的表面;以及 不同值的偏置施加单元，用于将不同于充电偏压的不同值的偏压施加到导电构件。 图像形成装置包括：潜像承载部件，用于承载潜像;潜像形成单元，用于在潜像承载部件上形成潜像;显影单元，用调色剂显影潜象;以及充电装置。