公开(公告)号：US20070280735A1

公开(公告)日：2007-12-06

申请号：US11759051

申请日：2007-06-06

申请人： Yuji Nagatomo ,  Tetsumaru Fujita

发明人： Yuji Nagatomo ,  Tetsumaru Fujita

IPC分类号： G03G15/02

CPC分类号： G03G15/0216

摘要： A charging unit available in a process unit detachably attached to an image forming apparatus includes a charging member configured to uniformly charge a surface of an image carrying member while contacting the image carrying member, and a charge bias applying unit configured to apply a charge bias superimposing a direct current voltage on an alternating current voltage to the charging member. The alternating current voltage satisfies a relational expression of “Vpp×0.4/t≦8.8×103”, “Vpp” representing a peak-to-peak voltage of the alternating current voltage in the charge bias, and “t” representing a time period from a first point of a swing of a wave component starting to swing by a large amount to a same polarity as the direct current voltage of the charge bias to a second point of the swing of the wave component reaching approximately 80% of an amplitude of the wave component.

摘要翻译： 可拆卸地附接到图像形成装置的处理单元中的充电单元包括充电构件，其被配置为在与图像承载构件接触的同时对图像承载构件的表面进行均匀充电;以及充电偏压施加单元，被配置为施加电荷偏置叠加 对充电部件的交流电压的直流电压。 交流电压满足表示充电偏压中的交流电压的峰 - 峰电压的“Vppx0.4 / t <= 8.8×10 3”，“Vpp”的关系式， 和“t”表示从开始摆动的波分量的摆动的第一点大量转移到与充电偏压的直流电压相同的极性到波分量的摆动的第二点的时间段 达到波分量幅度的大约80％。

公开(公告)号：US20210396994A1

公开(公告)日：2021-12-23

申请号：US17350089

申请日：2021-06-17

申请人： Tetsumaru Fujita ,  Masayuki Fujishima ,  Junichi Konishi ,  Hidenori Kato

发明人： Tetsumaru Fujita ,  Masayuki Fujishima ,  Junichi Konishi ,  Hidenori Kato

IPC分类号： G02B26/08 ,  G02B26/10

摘要： A light deflector includes a movable device; a drive unit configured to drive the movable device; an input wiring board configured to apply electric power from the drive unit to the movable device; and an anisotropic conductive resin film through which the input wiring board is connected to an input part. The movable device includes a movable portion including a reflector, between a pair of drive beams; a pair of supporting parts supporting the pair of drive beams; and a mount unit secured to the pair of supporting parts. The pair of drive beams supports the movable portion to allow the movable portion to oscillate around an oscillation axis. Each of the pair of drive beams includes a beam member and an actuator. At least one of the pair of supporting parts includes the input part to which electric power is input from the input wiring board to the actuator.

公开(公告)号：US09014593B2

公开(公告)日：2015-04-21

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旋转体的端部的表面。 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：US07627270B2

公开(公告)日：2009-12-01

申请号：US11625669

申请日：2007-01-22

申请人： Tetsumaru Fujita

发明人： Tetsumaru Fujita

IPC分类号： G03G15/02

CPC分类号： G03G15/0216 ,  G03G2215/025

摘要： A charging device for applying a voltage to a latent image carrier of an image forming apparatus includes a brush roller, a voltage applying mechanism, and a driving mechanism. The brush roller includes a shaft and a brush. The brush has an oblique brush amount, and is disposed on an outer surface of the shaft while being disposed to a surface of the latent image carrier such that the brush roller is abutted with a brush contact amount. This brush is configured to uniformly charge the surface of the latent image carrier. The voltage applying mechanism is configured to apply a charging voltage to the brush roller. The driving mechanism is configured to drive the brush roller at a predetermined rotation number to satisfy a relationship Z>150−50 A, where Z is a rotation number (rpm) of the brush roller, and A is the oblique brush amount (mm).

摘要翻译： 用于向图像形成装置的潜像载体施加电压的充电装置包括刷辊，电压施加机构和驱动机构。 刷辊包括轴和刷子。 刷子具有倾斜的刷子量，并且设置在轴的外表面上，同时设置在潜像载体的表面上，使得刷辊与刷接触量抵接。 该刷被配置为对潜像载体的表面均匀充电。 电压施加机构构成为向刷辊施加充电电压。 驱动机构构成为以规定的转数驱动刷辊，以满足Z> 150〜50A的关系，其中Z为刷辊的旋转数（rpm），A为斜刷量（mm） 。

公开(公告)号：US06782226B2

公开(公告)日：2004-08-24

申请号：US10367843

申请日：2003-02-19

申请人： Junji Machida ,  Hidetoshi Miyamoto ,  Tetsumaru Fujita ,  Masahiko Matsuura ,  Yoshiko Yaoi ,  Makoto Shimazoe ,  Shuichi Nakagawa

发明人： Junji Machida ,  Hidetoshi Miyamoto ,  Tetsumaru Fujita ,  Masahiko Matsuura ,  Yoshiko Yaoi ,  Makoto Shimazoe ,  Shuichi Nakagawa

IPC分类号： G03G1508

CPC分类号： G03G15/0808 ,  G03G2215/0619

摘要： A developing device includes a toner bearing member holding a toner on its surface for conveyance of the toner to a development region where the toner bearing member opposes an image bearing member via a predetermined gap therebetween; a regulating member pressed against the surface of the toner bearing member for regulation of the amount of toner conveyed to the development region; and a developing bias source for applying an alternating electric field between the toner bearing member and the image bearing member. The developing device features the use of the toner bearing member including a conductive substrate formed with an elastic layer, an intermediate layer and a surface layer on the surface thereof, respective volume resistances &rgr;1, &rgr;2 and &rgr;3 of which layers satisfy a condition &rgr;2≦&rgr;1≦&rgr;3, the toner bearing member having an arithmetic average surface roughness in the range of 0.8 to 2.5 &mgr;m, and the use of the toner having a volume-average particle size of 3 to 8 &mgr;m.

摘要翻译： 显影装置包括在其表面上保持调色剂的调色剂承载构件，用于将调色剂输送到显影区域，在该显影区域，调色剂承载构件经由图像承载构件经由其间的预定间隙对置; 调节构件压靠在调色剂承载构件的表面上，用于调节传送到显影区域的调色剂的量; 以及用于在调色剂承载构件和图像承载构件之间施加交变电场的显影偏压源。 显影装置的特征在于使用调色剂承载部件，该调色剂承载部件包括形成有表面的弹性层，中间层和表面层的导电性基板，其各层满足条件rho2 <= 1的各自的体积电阻rho1，rho2和rho3， RHO1＆LE; RHO3，具有0.8〜2.5μm的算术平均表面粗糙度的调色剂承载构件，以及使用体积平均粒径为3〜8μm的调色剂。

公开(公告)号：US5940661A

公开(公告)日：1999-08-17

申请号：US22472

申请日：1998-02-12

申请人： Masataka Yagi ,  Tamotsu Sakuraba ,  Tetsumaru Fujita ,  Narutaka Yoshida ,  Akira Hirota ,  Tsugihito Yoshiyama ,  Masami Matsuura ,  Yasuhiro Nakagami ,  Masayasu Haga

发明人： Masataka Yagi ,  Tamotsu Sakuraba ,  Tetsumaru Fujita ,  Narutaka Yoshida ,  Akira Hirota ,  Tsugihito Yoshiyama ,  Masami Matsuura ,  Yasuhiro Nakagami ,  Masayasu Haga

IPC分类号： G03G15/02 ,  G03G21/00

CPC分类号： G03G15/0216 ,  G03G15/025 ,  G03G21/0064 ,  G03G2215/023 ,  G03G2221/0005

摘要： An image forming apparatus with a charging member that allows easy removal of smears from an image forming drum. The apparatus removes smears from the image forming drum by placing a different portion of the charging member in contact with the drum. The apparatus uses a cam or a solenoid to press on the charging member to cause a different portion of the charging member to come into contact with the image forming drum.

摘要翻译： 一种具有充电部件的图像形成装置，其允许容易地从成像鼓中去除污点。 该装置通过将充电构件的不同部分与滚筒接触来从图像形成滚筒中去除污迹。 该装置使用凸轮或螺线管按压充电构件，使充电构件的不同部分与图像形成鼓接触。

公开(公告)号：US5754926A

公开(公告)日：1998-05-19

申请号：US610868

申请日：1996-03-05

申请人： Tamotsu Sakuraba ,  Hirofumi Hasegawa ,  Tetsumaru Fujita

发明人： Tamotsu Sakuraba ,  Hirofumi Hasegawa ,  Tetsumaru Fujita

IPC分类号： G03G15/02 ,  G03G21/00

CPC分类号： G03G15/0225 ,  G03G21/0064

摘要： In a charging device used in a cleanerless image forming apparatus and including a charging brush in contact with an image bearing member, a scraping member is provided which is in contact with the charging brush with a predetermined amount of indentation overlap on an upstream side of a contact portion between the charging brush and the image bearing member with respect to a rotational direction of the charging brush. With such an arrangement, the developer, which is scraped from the charging brush by the scraping member and then adheres onto the image bearing member, is recharged by the charging brush so as to be collected by a developing-cleaning device.

摘要翻译： 在用于无清洁器的图像形成装置中并且包括与图像承载部件接触的充电刷的充电装置中，提供刮擦构件，其在充电刷的上游侧与充电刷接触预定量的压痕重叠 充电刷和图像承载部件之间的接触部分相对于充电刷的旋转方向。 通过这样的布置，通过刮擦构件从充电刷刮下然后粘附到图像承载部件上的显影剂被充电刷充电，以便由显影清洁装置收集。

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。