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    Image forming apparatus with a toner replenishment feature
    31.
    发明授权
    Image forming apparatus with a toner replenishment feature 有权
    具有调色剂补充功能的图像形成装置

    公开(公告)号：US07512348B2

    公开(公告)日：2009-03-31

    申请号：US11313800

    申请日：2005-12-22

    申请人： Hideaki Suzuki ,  Yusuke Ishida ,  Kazushige Nishiyama

    发明人： Hideaki Suzuki ,  Yusuke Ishida ,  Kazushige Nishiyama

    IPC分类号： G03G15/08

    CPC分类号： G03G15/553 ,  G03G15/0822 ,  G03G15/556 ,  G03G2215/00037 ,  G03G2215/0177 ,  G03G2215/0609

    摘要： An image forming apparatus includes: a developing unit for developing a latent image on an image bearing member by using a developer containing toner and a carrier; and a detecting unit for detecting a density of a detection reference toner image, wherein detection results obtained by the detecting unit are employed to control a toner replenishment operation for the developing unit, and wherein, when the detection results obtained by the detecting unit is equal to or smaller than a predetermined value, a residual toner amount determination mode is performed. The residual toner amount determination mode includes: a toner replenishment step of performing an operation for replenishing toner; a detecting step of performing the detecting unit to detect the density of the detection reference toner image; and a comparison step of comparing a first detection result obtained at the detection step with a second detection result obtained by the detecting unit before said toner replenishment step is performed the first time, and for which respective performance of the steps is enabled while an image forming operation is halted, and wherein, based on the results obtained at said comparison step, whether the residual toner amount determination mode should be continued is determined.

    摘要翻译： 图像形成装置包括：显影单元，用于通过使用含有调色剂和载体的显影剂在图像承载部件上显影潜像; 以及用于检测检测基准调色剂图像的浓度的检测单元，其中采用由检测单元获得的检测结果来控制显影单元的调色剂补充操作，并且其中当检测单元获得的检测结果相等时 达到或小于预定值时，执行残留调色剂量确定模式。 残留调色剂量确定模式包括：调色剂补充步骤，执行补充调色剂的操作; 检测步骤，执行检测单元以检测检测基准调色剂图像的浓度; 以及比较步骤，在第一次执行在所述检测步骤获得的第一检测结果与由所述检测单元获得的第二检测结果之间进行比较，并且在图像形成期间能够进行各步骤的执行 操作停止，并且其中，基于在所述比较步骤获得的结果，确定是否应该继续残留调色剂量确定模式。

    Developing device and image forming apparatus
    34.
    发明授权
    Developing device and image forming apparatus 有权
    显影装置和图像形成装置

    公开(公告)号：US07421226B2

    公开(公告)日：2008-09-02

    申请号：US11416339

    申请日：2006-05-02

    申请人： Koji Suenami ,  Eiji Nimura ,  Hirohisa Endou ,  Hiroyuki Hamakawa ,  Yoshihiro Yamagishi

    发明人： Koji Suenami ,  Eiji Nimura ,  Hirohisa Endou ,  Hiroyuki Hamakawa ,  Yoshihiro Yamagishi

    IPC分类号： G03G15/08

    CPC分类号： G03G15/0942 ,  G03G2215/0609 ,  G03G2215/0634

    摘要： A developing device (50) includes a developing sleeve (53) for supplying toner particles (T) to a latent image area (22) on a peripheral surface of a photoconductive drum (20) while rotating about a central shaft (534). The developing sleeve (53) has an immovable sleeve magnet (533) therein. Two magnetic members (82) are disposed in opposite end portions of the developing sleeve (53) and are spaced a predetermined distance from the peripheral surface of the developing sleeve. Each magnet member (82) has an arc shape. A magnetic member magnet (83) is mounted in the magnet member (82) and faces a sleeve magnet (533) so that opposite facing portions of the magnetic member magnet (83) and the sleeve magnet (533) have the same polarity. With this construction, toner particles are prevented from leaking from the end portions of the developing sleeve (53).

    摘要翻译： 显影装置（50）包括用于在绕中心轴（534）旋转的同时将调色剂颗粒（T）供应到感光鼓（20）的外周表面上的潜像区域（22）的显影套筒（53）。 显影套筒（53）中具有不可移动的套筒磁体（533）。 两个磁性构件（82）设置在显影套筒（53）的相对端部，并且与显影套筒的外围表面隔开预定的距离。 每个磁体构件（82）具有弧形。 磁性构件磁体（83）安装在磁体构件（82）中并且面向套筒磁体（533），使得磁性构件磁体（83）和套筒磁体（533）的相对的相对部分具有相同的极性。 利用这种结构，防止调色剂颗粒从显影套筒（53）的端部泄漏。

    Magnet roller developing device and image forming apparatus for reducing obstructions in developer circulation path
    35.
    发明授权
    Magnet roller developing device and image forming apparatus for reducing obstructions in developer circulation path 有权
    用于减少显影剂循环路径中的障碍物的磁辊显影装置和图像形成装置

    公开(公告)号：US07406280B2

    公开(公告)日：2008-07-29

    申请号：US10571006

    申请日：2004-09-07

    申请人： Syohji Tomita ,  Toshio Nishino ,  Hiroshi Onda ,  Takeshi Wakabayashi ,  Hiroshi Ishii

    发明人： Syohji Tomita ,  Toshio Nishino ,  Hiroshi Onda ,  Takeshi Wakabayashi ,  Hiroshi Ishii

    IPC分类号： G03G15/08

    CPC分类号： G03G15/081 ,  G03G15/0812 ,  G03G15/09 ,  G03G15/0921 ,  G03G2215/0609 ,  G03G2215/0866

    摘要： A device including a developing roller having a magnet roller for transporting developer, and developing an electrostatic latent image, a regulating member regulating transportation amount of the developer transported to the electrostatic latent image with the development roller, and a reflux plate refluxing excess developer regulated by the regulating member away from the regulating member is constructed to comprise a rubbing member arranged to face the developing roller, at a second gap larger than a first gap defined by the developing roller and the regulating member, and rubbing developer transported to the first gap. The rubbing member carries out preliminary electrification on developer and then the regulating member carries out main electrification on the preliminarily electrified developer.

    摘要翻译： 一种装置，包括具有用于输送显影剂的磁性辊和显影静电潜像的显影辊，调节构件，其调节用显影辊输送到静电潜像的显影剂的输送量，以及回流板回流过量显影剂， 远离限制构件的调节构件被构造成包括在比由显影辊和调节构件限定的第一间隙大的第二间隙处以布置成面对显影辊的摩擦构件和摩擦显影剂运送到第一间隙。 摩擦部件对显影剂进行预充电，然后调节部件在预充电显影剂上进行主电气化。

    Carrier for electrostatic image development, and image formation method and apparatus
    36.
    发明申请
    Carrier for electrostatic image development, and image formation method and apparatus 有权
    用于静电图像显影的载体，以及图像形成方法和装置

    公开(公告)号：US20080081278A1

    公开(公告)日：2008-04-03

    申请号：US11806223

    申请日：2007-05-30

    申请人： Akira Matsumoto ,  Akihiro Iizuka ,  Fusako Kiyono

    发明人： Akira Matsumoto ,  Akihiro Iizuka ,  Fusako Kiyono

    IPC分类号： G03G15/09 ,  G03G9/113

    CPC分类号： G03G15/09 ,  G03G9/09708 ,  G03G9/107 ,  G03G9/1132 ,  G03G9/1139 ,  G03G15/095 ,  G03G2215/0609

    摘要： An image forming apparatus, including a latent image-holding member, a developing unit, a transfer unit, a cleaning unit, and a recycling unit, wherein the developer includes a toner having an external-additive adhesiveness index SA in the range of approximately 50% to approximately 95% and: a carrier containing magnetic particles and a coating layer coating the surface of the magnetic particles and having a total energy of approximately 1,420 to approximately 2,920 mJ; or a carrier containing magnetic powder-dispersed particles and a coating layer coating the surface of the magnetic powder-dispersed particles and having a total energy of, approximately 890 to approximately 1,390 mJ.

    摘要翻译： 一种图像形成装置，包括潜像保持构件，显影单元，转印单元，清洁单元和再循环单元，其中显影剂包括具有约50的范围内的外部添加剂粘合指数SA的调色剂 ％至约95％，和：含有磁性颗粒的载体和涂覆磁性颗粒表面的涂层，其总能量约为1,420至约2920mJ; 或包含磁粉分散颗粒的载体和涂覆磁粉分散颗粒表面的涂层，其总能量约为890至约1390mJ。

    Image forming apparatus for preventing worm-shaped image irregularities
    37.
    发明授权
    Image forming apparatus for preventing worm-shaped image irregularities 失效
    用于防止蜗形图像不规则的图像形成装置

    公开(公告)号：US07343122B2

    公开(公告)日：2008-03-11

    申请号：US11295988

    申请日：2005-12-06

    申请人： Seiko Itagaki

    发明人： Seiko Itagaki

    IPC分类号： G03G15/09

    CPC分类号： G03G15/0907 ,  G03G15/065 ,  G03G2215/0609

    摘要： There is described an image forming apparatus, which prevents an occurrence of worm-shaped image irregularities even in the high-speed developing operation to form a high quality image. In the image forming apparatus, the contact developing employing a two components developer including toner and carrier is conducted in such a manner that the latent image bearing member and the developer bearing member move in directions being opposite relative to each other at a developing region where the latent image bearing member and the developer bearing member are opposed to each other. The frequency of the AC current component and a line velocity of the latent image bearing member fulfill a condition indicated as follow: vp/f≦70condition 1 where vp (mm/sec) is the line velocity of the latent image bearing member and f (kHz) is the frequency of the AC current component.

    摘要翻译： 描述了一种图像形成装置，其即使在高速显影操作中也可防止蠕虫状图像不规则的发生，从而形成高质量的图像。 在图像形成装置中，使用包括调色剂和载体的双组分显影剂的接触显影以这样的方式进行，使得潜像承载部件和显影剂承载部件在显影区域相对于彼此相反的方向移动， 潜像承载部件和显影剂承载部件彼此相对。 AC电流分量的频率和潜像承载部件的线速度满足如下条件：<？in-line-formula description =“In-line formula”end =“lead”？> vp / f < = 70条件1 <？in-line-formula description =“在线公式”end =“tail”？>其中vp（mm / sec）是潜像承载部件的线速度，f（kHz）是频率 的交流电流分量。

    Image forming apparatus including an index feature for extending the life of a photosensitive member
    39.
    发明授权
    Image forming apparatus including an index feature for extending the life of a photosensitive member 有权
    图像形成设备包括用于延长感光构件的寿命的折射特征

    公开(公告)号：US07263318B2

    公开(公告)日：2007-08-28

    申请号：US11249630

    申请日：2005-10-14

    申请人： Tadayoshi Nishihama ,  Fumitake Hirobe ,  Akihiro Noguchi

    发明人： Tadayoshi Nishihama ,  Fumitake Hirobe ,  Akihiro Noguchi

    IPC分类号： G03G15/09

    CPC分类号： G03G15/0921 ,  G03G2215/0609

    摘要： The image forming apparatus has an electrophotographic photosensitive member and a developing device for using a developer including toner and carrier, wherein the developing device develops an electrostatic image on a photosensitive member by putting the developer forming a magnetic brush on a developer bearing member including magnetic field generation device inside in contact with the photosensitive member, and when a contact pressure of the developer on the developer bearing member against the photosensitive member is P (Pa), a circumferential velocity of the developer bearing member is VSl (mm/s), a circumferential velocity of the photosensitive member is VDr (mm/s), and an elastic deformation ratio of the photosensitive member is W (%), a degree of sliding of the photosensitive member by the developer represented ranges from 650 to 60500.

    摘要翻译： 图像形成装置具有电子照相感光构件和用于使用包括调色剂和载体的显影剂的显影装置，其中显影装置通过将形成磁刷的显影剂置于包含磁场的显影剂承载构件上而在感光构件上显影静电图像 内部与感光构件接触的发生装置，并且当显影剂承载构件上的显影剂抵靠感光构件的接触压力为P（Pa）时，显影剂承载构件的圆周速度为V S1 >（mm / s），感光体的圆周速度为V Dr（mm / s），感光体的弹性变形率为W（％），滑动的程度 由显影剂表示的感光构件的范围为650至60500。