公开(公告)号：US20240264548A1

公开(公告)日：2024-08-08

申请号：US18446179

申请日：2023-08-08

申请人： FUJIFILM Business Innovation Corp.

发明人： Yuki TAGAWA ,  Fuyuki KANO ,  Takuya YAMAMOTO

IPC分类号： G03G15/02

CPC分类号： G03G15/0225 ,  G03G15/0233 ,  G03G2215/022

摘要： A charging device includes: a charging member that rotates in contact with a charged body and charges the charged body; and a cleaning member that comes into contact with the charging member and rotates in conjunction with the charging member, in which the cleaning member includes a foam elastic layer in which a band-shaped foam elastic member is spirally disposed with a pitch, and a diameter of a tip end portion of a cell skeleton protruding to a surface of the foam elastic layer is 50 μm or less, and a peripheral speed ratio of the cleaning member to the charging member is 0.3 or more and 0.7 or less.

公开(公告)号：US11860566B2

公开(公告)日：2024-01-02

申请号：US18081910

申请日：2022-12-15

申请人： CANON KABUSHIKI KAISHA

发明人： Takayuki Kanazawa ,  Nobuo Oshima ,  Takayoshi Kihara ,  Kuniaki Tamagaki ,  Shuhei Tokiwa ,  Taichi Sato

IPC分类号： G03G21/00 ,  G03G15/02 ,  G03G15/16 ,  G03G21/16

CPC分类号： G03G21/0064 ,  G03G15/0225 ,  G03G15/168 ,  G03G21/0005 ,  G03G21/007 ,  G03G21/169 ,  G03G21/0035 ,  G03G2215/022 ,  G03G2221/0005 ,  G03G2221/0089 ,  G03G2221/1618 ,  G03G2221/1627

摘要： An image forming apparatus includes a rotatable image bearing member, a developing member, a transfer member, and a brush contacting a surface of the image bearing member in a contact portion downstream of a transfer portion and upstream of a developing portion with respect to a rotational direction of the image bearing member. The toner which is not transferred onto a toner image receiving member is collected by the developing member. In a charging series, the toner is positioned on the same side as a normal charge polarity of the toner relative to the brush. In the contact portion, a maximum value of a contact pressure of 0.7 gf/mm2 or more and 3.5 gf/mm2 or less, a maximum contact area ratio is 18% or more and 74% or less, and a Clark-Evans index of the brush is 1 or more.

公开(公告)号：US20230305421A1

公开(公告)日：2023-09-28

申请号：US18182231

申请日：2023-03-10

申请人： CANON KABUSHIKI KAISHA

发明人： TOSHIHIKO TAKAYAMA ,  SHUICHI TETSUNO ,  MIKIHIKO HAMADA

IPC分类号： G03G15/02 ,  G03G21/12 ,  G03G15/00

CPC分类号： G03G15/0216 ,  G03G21/12 ,  G03G15/5037 ,  G03G2221/1621 ,  G03G2215/022

摘要： An image forming apparatus includes an image bearing member, a brush, and a controller. The controller controls so that, in a case where, in a state where a recording material trailing edge in a conveyance direction is sandwiched at a transfer portion, an area of the image bearing member in the conveyance direction where the recording material is sandwiched in a direction perpendicular to the conveyance direction is a first area, and an area of the image bearing member in the conveyance direction where the recording material is not sandwiched is a second area, a first potential difference formed between a surface potential formed on the second area and a brush voltage, which is based on first information, when the second area reaches the brush and a second potential difference formed between the second area surface potential and the brush voltage, which is based on second information, are different.

公开(公告)号：US07636532B2

公开(公告)日：2009-12-22

申请号：US11491683

申请日：2006-07-24

申请人： Keiji Yuge

发明人： Keiji Yuge

IPC分类号： G03G15/22 ,  G03G15/02

CPC分类号： G03G15/0225 ,  G03G21/0047 ,  G03G2215/022

摘要： A charging device that switches and executes a first mode which brings a magnetic brush into contact with a photosensitive member to charge a surface of the photosensitive member and a second mode which collects a two-component developing agent including a toner and a carrier, which remains on the surface of the photosensitive member. The charging device includes a magnetic brush carrying roller, a toner collecting roller, a toner removing member, and a regulating member. The toner collecting roller is located further on a downstream side than the regulating member and further on an upstream side than a contact position of the magnetic brush and the photosensitive member in a moving direction of a roller surface of the magnetic brush carrying roller.

摘要翻译： 一种充电装置，其切换和执行第一模式，其使磁刷与感光构件接触以对感光构件的表面充电;以及第二模式，其收集包含调色剂和载体的双组分显影剂，其保留 在感光构件的表面上。 充电装置包括磁刷承载辊，调色剂收集辊，调色剂移除构件和调节构件。 调色剂收集辊位于比磁性刷输送辊的辊表面移动方向进一步位于调节构件的下游侧，而且位于磁刷和感光构件的接触位置的上游侧。

公开(公告)号：US20050135839A1

公开(公告)日：2005-06-23

申请号：US11001020

申请日：2004-12-02

申请人： Ryo Inoue

发明人： Ryo Inoue

IPC分类号： G03G5/08 ,  G03G5/147 ,  G03G15/00 ,  G03G15/02

CPC分类号： G03G15/0241 ,  G03G2215/022

摘要： An image forming apparatus includes an image bearing member, and first and second chargers. Each of the chargers includes a magnetic member for generating magnetism, has a holding member for holding magnetic particles by a magnetic force, and charges the image bearing member by bringing the magnetic particles in contact therewith. The magnetic member of each of the chargers has a magnetic pole facing the image bearing member. The second charger is located at the tail end in the image bearing member rotational direction, but before a position at which an image is formed on the image bearing member. In the image bearing member rotation direction, and relative to a position at which the image bearing member comes closest to the holding member, the first charger's magnetic member has a peak magnetic force positioned downstream, and the second charger's magnetic member has a peak magnetic force positioned upstream.

摘要翻译： 图像形成装置包括图像承载部件和第一和第二充电器。 每个充电器包括用于产生磁性的磁性构件，具有用于通过磁力保持磁性颗粒的保持构件，并且通过使磁性颗粒接触而对图像承载构件进行充电。 每个充电器的磁性构件具有面向图像承载部件的磁极。 第二充电器位于图像承载部件旋转方向的尾端，但位于图像承载部件上形成图像的位置之前。 在图像承载部件旋转方向上，相对于图像承载部件最靠近保持部件的位置，第一充电器的磁性部件具有位于下游的峰值磁力，第二充电器的磁性部件具有峰值磁力 位于上游。

公开(公告)号：US06829459B2

公开(公告)日：2004-12-07

申请号：US10173941

申请日：2002-06-19

申请人： Daisuke Tanaka ,  Yosuke Morikawa ,  Kouichi Nakata ,  Kimihiro Yoshimura

发明人： Daisuke Tanaka ,  Yosuke Morikawa ,  Kouichi Nakata ,  Kimihiro Yoshimura

IPC分类号： G03G1502

CPC分类号： G03G5/14769 ,  G03G5/14704 ,  G03G5/14708 ,  G03G5/1476 ,  G03G5/14773 ,  G03G15/0216 ,  G03G2215/022 ,  G03G2221/0005 ,  G03G2221/183

摘要： An electrophotographic apparatus and a process cartridge have a charge unit for charging the surface of a photosensitive member by direct injection of electrical charge from a contact charging member to the photosensitive member. The charging unit also functions as a unit for supporting residual toner on the surface of the photosensitive member after transfer, for normalizing the electrical charge of the residual toner, and for returning the normalized residual toner to the surface of the photosensitive member. A developing unit also functions as a unit for recovering the normalized residual toner returned to the surface of the photosensitive member. The absolute value of the difference in charged potential between a first rotation and a second rotation of the photosensitive member is higher than 5 V and lower than 70 V. The photosensitive member has a charge injection layer having a specific composition and the charging member supports charged particles having specific characteristics.

摘要翻译： 电子照相设备和处理盒具有充电单元，用于通过从接触充电元件直接注入感光元件来对感光元件的表面充电。 充电单元还用作用于在转印后用于支撑感光构件表面上的残留调色剂的单元，用于使残留调色剂的电荷归一化并使标准化的残留调色剂返回到感光构件的表面。 显影单元还用作用于回收返回到感光构件的表面的归一化残留调色剂的单元。 感光构件的第一旋转和第二旋转之间的带电电位差的绝对值高于5V且小于70V。感光构件具有具有特定组成的电荷注入层，并且充电构件支撑带电 具有特定特性的颗粒。

公开(公告)号：US20030185593A1

公开(公告)日：2003-10-02

申请号：US10370773

申请日：2003-02-24

申请人： CANON KABUSHIKI KAISHA

发明人： Hiroyuki Suzuki ,  Ryo Inoue ,  Ryo Nakamura

IPC分类号： G03G015/02

CPC分类号： G03G15/0216 ,  G03G2215/022

摘要： To provide a charging apparatus including: a first charging unit for charging a body to be charged, the first charging unit including a magnetic brush that contacts the body to be charged; and a second charging unit that is provided on a downstream side of the first charging unit with respect to a moving direction of the body to be charged, the second charging unit including a magnetic brush that contacts the body to be charged, in which a contact width, with which the magnetic brush of the first charging unit contacts the body to be charged, is wider than a contact width with which the magnetic brush of the second charging unit contacts the body to be charged.

摘要翻译： 提供一种充电装置，包括：第一充电单元，用于对被充电体充电，第一充电单元包括与要充电的主体接触的磁刷; 以及第二充电单元，其相对于要充电的主体的移动方向设置在所述第一充电单元的下游侧，所述第二充电单元包括与要充电的主体接触的磁刷，其中， 第一充电单元的磁刷与被充电体接触的宽度比第二充电单元的磁刷与要充电的主体接触的接触宽度宽。

公开(公告)号：US06553196B2

公开(公告)日：2003-04-22

申请号：US09947356

申请日：2001-09-07

申请人： Ryo Inoue

发明人： Ryo Inoue

IPC分类号： G03G1500

CPC分类号： G03G21/08 ,  G03G21/0094 ,  G03G2215/022

摘要： An image forming apparatus capable of making potential control executable immediately after starting copying and shortening a first copying time includes a photosensitive drum (1), a charging magnetic brush charger (2) for charging the photosensitive drum (1) and a main electricity eliminating light irradiating apparatus (8) for irradiating light to eliminate a light memory in the photosensitive drum 1. The main electricity eliminating light irradiating apparatus (8) irradiates the photosensitive drum (1) with an exposure amount larger than a minimum exposure amount for eliminating a light memory in at least a part of an irradiation process.

摘要翻译： 能够在开始复印之后立即执行电位控制的图像形成装置和缩短第一复印时间包括感光鼓（1），用于对感光鼓（1）充电的充电磁刷充电器（2）和主电力消除光 照射装置（8），用于照射光以消除感光鼓1中的光存储。主电力消除光照射装置（8）以大于最小曝光量的曝光量照射感光鼓（1），以消除光 记录至少一部分照射过程。

公开(公告)号：US06449448B2

公开(公告)日：2002-09-10

申请号：US09749935

申请日：2000-12-29

申请人： Yuji Bessho ,  Yoshikuni Ito

发明人： Yuji Bessho ,  Yoshikuni Ito

IPC分类号： G03G1502

CPC分类号： G03G21/0064 ,  G03G2215/0109 ,  G03G2215/022 ,  G03G2215/1661 ,  G03G2221/0005

摘要： An image forming apparatus includes an image carrier which carries an electrostatic image, a developing device for developing the electrostatic image using toner, a rotating transfer member which transfers a toner image on the image bearer, a charging device for charging an image bearer on which residual toner is deposited due to transfer by the rotating transfer member, the charging device allowing residual toner on the image bearer to be collected, and a returning device for returning toner in the charging device to the image bearer, the rotating transfer member transferring onto the rotating transfer member at least a portion of toner returned to the image bearer by the returning device.

摘要翻译： 图像形成装置包括承载静电图像的图像载体，用于使用调色剂显影静电图像的显影装置，将图像载体上的调色剂图像转印的旋转转印部件，用于对图像载体进行充电的充电装置， 调色剂由于旋转传递部件的转移而被沉积，允许收集图像承载体上的残留调色剂的充电装置以及用于将充电装置中的调色剂返回到图像承载体的返回装置，旋转传递部件转移到旋转 转印部件通过返回装置返回到图像承载体的调色剂的至少一部分。

公开(公告)号：US06366751B1

公开(公告)日：2002-04-02

申请号：US09662701

申请日：2000-09-15

申请人： Masahiko Shakuto ,  Tsukuru Kai ,  Hidetoshi Yano ,  Takahiko Tokumasu ,  Hiroshi Ikuno ,  Kei Yasutomi ,  Hirokatsu Suzuki ,  Nobutaka Takeuchi ,  Toshihiko Baba

发明人： Masahiko Shakuto ,  Tsukuru Kai ,  Hidetoshi Yano ,  Takahiko Tokumasu ,  Hiroshi Ikuno ,  Kei Yasutomi ,  Hirokatsu Suzuki ,  Nobutaka Takeuchi ,  Toshihiko Baba

IPC分类号： G03G1500

CPC分类号： G03G13/025 ,  G03G2215/022

摘要： An image forming apparatus includes a photoconductive element including a conductive support rotatably supported and a charge injection layer and a surface protection layer sequentially laminated on the conductive support. A charger includes a conductive body for injecting, when a preselected voltage is applied thereto, a charge in the charge injection layer in contact with the surface protection layer. A writing unit exposes the charged surface of the photoconductive element imagewise to thereby locally vary the potential deposited on the photoconductive element and electrostatically form a latent image. A developing unit develops the latent image to thereby produce a corresponding toner image. The toner image is transferred from the photoconductive element to a recording medium. Assuming that the charge injection layer has a thickness of D micrometers, and that the potential deposited on the surface of the photoconductive element by the conductive member is V volts in absolute value, then a ratio V/D is confined in a preselected range that does not contaminate the background of the photoconductive element.

摘要翻译： 图像形成装置包括：光电元件，其包括可旋转地支撑的导电支撑体和电荷注入层以及依次层叠在导电支撑体上的表面保护层。 充电器包括导电体，用于当向其施加预选电压时，注入与表面保护层接触的电荷注入层中的电荷。 写入单元使成像的光电导元件的带电表面曝光，从而局部地改变沉积在光电导元件上的电位并静电地形成潜像。 显影单元显影潜像，从而产生相应的调色剂图像。 调色剂图像从感光元件转印到记录介质上。 假设电荷注入层具有D微米的厚度，并且通过导电部件沉积在光电导元件的表面上的电位是绝对值的V伏特，则比率V / D被限制在预定的范围内 不污染光导元件的背景。