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    Image forming apparatus
    51.
    发明公开
    Image forming apparatus 有权
    成像设备

    公开(公告)号：EP2639652A2

    公开(公告)日：2013-09-18

    申请号：EP13159106.7

    申请日：2013-03-14

    申请人： Kyocera Document Solutions Inc.

    发明人： Matsui, Kenshi

    IPC分类号： G03G15/09 ,  G03G15/00

    CPC分类号： G03G15/095 ,  G03G15/0907 ,  G03G15/5041 ,  G03G15/5058

    摘要： The developing device includes a toner layer formation control unit instructing a voltage control unit to set a first voltage difference to form a toner layer on a surface of a toner supporting rotator, a stripping control unit that instructs the voltage control unit to, in a toner layer stripping mode, set a second voltage difference that moves substantially an entire amount of toner composing the toner layer to a developer supporting rotator, and a density detection unit detecting the toner density on a transfer member onto which a toner image is primarily transferred. When the toner remains on a surface of the toner supporting rotator, the stripping control unit causes the toner to fly to the surface of the image carrier, while outputting an instruction adjusting the second voltage difference to the voltage control unit in order to reduce the toner density detected by the toner density detection unit.

    摘要翻译： 该显影装置包括：调色剂层形成控制单元，其指示电压控制单元设定第一电压差以在调色剂承载旋转体的表面上形成调色剂层;剥离控制单元，其指示电压控制单元用调色剂 将基本上将构成调色剂层的全部量的调色剂移动到显影剂支撑旋转体的第二电压差，以及检测调色剂图像一次转印到其上的转印构件上的调色剂浓度的浓度检​​测单元。 当调色剂残留在调色剂承载旋转体的表面上时，剥离控制单元使调色剂飞到图像载体的表面，同时向电压控制单元输出调节第二电压差的指令，以便减少调色剂 由调色剂浓度检测单元检测的浓度。

    IMAGE FORMATION DEVICE
    54.
    发明公开
    IMAGE FORMATION DEVICE 审中-公开
    图像形成装置

    公开(公告)号：EP2267553A1

    公开(公告)日：2010-12-29

    申请号：EP09729484.7

    申请日：2009-04-10

    申请人： Canon Kabushiki Kaisha

    发明人： KUBO, Kenta ,  YAMAMOTO, Takeshi ,  HARAGUCHI, Manami ,  MIYAZAWA, Tomoaki ,  HORIE, Juun

    IPC分类号： G03G15/06 ,  G03G5/08 ,  G03G9/10 ,  G03G9/113

    CPC分类号： G03G15/0907 ,  G03G9/10 ,  G03G9/107 ,  G03G2215/0602

    摘要： An image forming apparatus comprising: a charging device that charges an image bearing member; an exposure device that forms said electrostatic image by exposing a surface of said image bearing member; a developing device that has a developer carrying member on which a developer including a toner and a magnetic carrier is carried; and a power supply that applies a developing bias on said developer carrying member; wherein said developing bias is an oscillating voltage having a peak voltage V 1 a peak voltage V 2 ; a duty ratio Du (%); said magnetic carrier has a characteristic that: said magnetic carrier has a resistivity ρ which decreases in accordance with an increasing electric field strength, and a relative dielectric constant ε which increases in accordance with an increasing electric field strength; a product of a time constant ε 0 ερ(s) of electric charge decay, which is denoted by a dielectric constant of a vacuum ε 0 , the relative dielectric constant ε of said magnetic carrier, and said resistivity ρ in an electric field strength E 2D decided by said peak voltage V 2 and said dark potential V D , and said electric field strength E 2D satisfies a relation of 20 ≤ ε 0 ερ E 2D (s·V/cm); and said time constant ε 0 ερ(s) and said relative dielectric constant ε in an electric field strength E 1L , which is decided by said first peak voltage V 1 and said bright potential V L , satisfy the following relations: ε 0 ερ(s) ≤ 6.0 x 10 -4 , and 30 ≤ ε.

    摘要翻译： 一种图像形成设备，包括：充电装置，其对图像承载部件充电; 曝光装置，其通过使所述图像承载部件的表面曝光来形成所述静电图像; 显影装置，其具有携带包含调色剂和磁性载体的显影剂的显影剂承载部件; 以及在所述显影剂承载部件上施加显影偏压的电源; 其中所述显影偏压是具有峰值电压V1a峰值电压V2的振荡电压; 占空比Du（％）; 所述磁性载体具有以下特性：所述磁性载体具有随着电场强度的增加而减小的电阻率ρ和随电场强度增加而增加的相对介电常数ε; 由真空介电常数ε0，所述磁性载体的相对介电常数ε和电场强度E2D表示的电荷衰减的时间常数ε0ερ（s）与电场强度E2D的乘积 峰值电压V2和所述暗电位VD，并且所述电场强度E2D满足20≤ε0ερE2D（s·V / cm）的关系; 并且由所述第一峰值电压V1和所述明亮电位VL决定的电场强度E1L中的所述时间常数ε0ερ（s）和所述相对介电常数ε满足以下关系：ε0ερ（s）≤6.0×10- 4，并且30≤ε。

    Image forming apparatus
    56.
    发明公开
    Image forming apparatus 审中-公开
    成像设备

    公开(公告)号：EP1983385A2

    公开(公告)日：2008-10-22

    申请号：EP08154805.9

    申请日：2008-04-18

    申请人： CANON KABUSHIKI KAISHA

    发明人： Miyazawa, Tomoaki ,  Yamamoto, Takeshi ,  Haraguchi, Manami ,  Kubo, Kenta ,  Horie, Juun

    IPC分类号： G03G15/09

    CPC分类号： G03G15/0907 ,  G03G2215/0607

    摘要： An image forming apparatus includes a photosensitive drum to which an electrostatic image is formed and a developing sleeve carrying a developer including toner carrier. An alternating voltage is applied to the sleeve to form an alternating electric field between the sleeve and the drum to develop the electrostatic image with the developer. A relation |K1|

    摘要翻译： 图像形成设备包括形成有静电图像的感光鼓和承载包括调色剂载体的显影剂的显影套筒。 将交流电压施加到套筒以在套筒和鼓之间形成交变电场以用显影剂显影静电图像。 关系| K1 | <| K2 | K1：电场强度Ed = |（Vp2-VL）/ D |时的斜率，K2：电场强度Eb = |（Vp1-VL）/ D |时的斜率，VL：电位 [V]，其中获得最大密度的静电图像，Vp1：提供使调色剂向鼓移动的电位差的峰电位[V]，Vp2：提供电位差的峰电位[V]， 将墨粉移向套筒，D：感光鼓与套筒之间的最近距离[m]。

    Image forming apparatus
    57.
    发明公开
    Image forming apparatus 审中-公开
    成像设备

    公开(公告)号：EP1367456A2

    公开(公告)日：2003-12-03

    申请号：EP03018867.6

    申请日：1998-10-07

    申请人： CANON KABUSHIKI KAISHA

    发明人： Shinohara, Seiichi ,  Kato, Junichi ,  Inami, Satoru ,  Yoshida, Masahiro ,  Nakazono, Yusuke

    IPC分类号： G03G15/06

    CPC分类号： G03G15/0907 ,  G03G15/065 ,  G03G2215/0602 ,  G03G2215/0614

    摘要： An image forming apparatus includes an image bearing member for bearing an electrostatic image; a developer carrying member for carrying a developer and for forming a developing zone with the image bearing member, wherein the developer is externally added with additive having a charging polarity opposite from that of the developer; voltage applying means for applying a developing voltage to the developer carrying member; voltage control means for controlling the developing voltage so as to change force for directing the additive toward a non-image portion of the image bearing member in accordance with a number of image forming operations.

    摘要翻译： 一种图像形成设备包括：图像承载部件，用于承载静电图像; 显影剂承载部件，用于承载显影剂并用于与所述图像承载部件一起形成显影区域，其中，所述显影剂外部添加有具有与所述显影剂相反的充电极性的添加剂; 电压施加装置，用于向显影剂承载构件施加显影电压; 电压控制装置，用于控制显影电压，从而根据多个图像形成操作改变用于将添加剂引导向图像承载构件的非图像部分的力。

    Developing device, process cartridge and energy electric supply part
    59.
    发明公开
    Developing device, process cartridge and energy electric supply part 有权
    处理器，工作单位和电源连接器

    公开(公告)号：EP1050783A3

    公开(公告)日：2000-11-15

    申请号：EP00303597.9

    申请日：2000-04-28

    申请人： CANON KABUSHIKI KAISHA

    发明人： Noda, Shinya, c/o Canon Kabushiki Kaisha ,  Sasaki, Teruhiko, c/o Canon Kabushiki Kaisha ,  Akutsu, Takashi, c/o Canon Kabushiki Kaisha ,  Sasago, Yoshikazu, c/o Canon Kabushiki Kaisha ,  Batori, Yoshiyuki, c/o Canon Kabushiki Kaisha ,  Terada, Ichiro, c/o Canon Kabushiki Kaisha

    IPC分类号： G03G15/09

    CPC分类号： G03G21/1867 ,  G03G15/0907 ,  G03G15/0935 ,  G03G21/1652 ,  G03G21/1676 ,  G03G2221/166 ,  G03G2221/183

    摘要： A developing device includes a frame (12); a developer carrying member (10d) for carrying a developer to develop an electrostatic image formed on an image bearing member, the developer carrying member including a first cylindrical portion (10d) and a second cylindrical portion (20a,20b) provided at an end of the cylindrical portion and supported by a bearing portion (21a,21b); a magnet (10c) provided in the developer carrying member, the magnet being extended from inside of the developer carrying member to outside thereof; a first electroconductive portion (28,29) supported on the magnet and extended from inside of the developer carrying member to outside thereof; a second electroconductive portion (30) provided in the developer carrying member and electrically connected with an inner surface (10d1) of the first cylindrical portion and in slidable contact inside the developer carrying member with the first electroconductive portion; in addition a third electroconductive portion (25) including a first electrical contact portion (25b) electrically connected with the first electroconductive portion outside of the developer carrying member and a second electrical contact portion (25a) disposed at a position different from the first electrical contact portion and electrically connected with an electrical contact (26) of a main assembly of an image forming apparatus; wherein a developing bias is applied to the developer carrying member from the electrical contact of the main assembly of the image forming apparatus by way of, e.g., the third electroconductive portion, the second electroconductive portion and the first electroconductive portion.

    Method of using an image forming apparatus
    60.
    发明公开
    Method of using an image forming apparatus 审中-公开
    Verfahren zur Verwendung einesBilderzeugungsgerätes

    公开(公告)号：EP0973071A2

    公开(公告)日：2000-01-19

    申请号：EP99304271.2

    申请日：1999-06-01

    申请人： XEIKON NV

    发明人： Janssens, Robert Frans Louisa ,  Van Aken, Luc Karel Maria ,  Waterschoot, William Constant Maria

    IPC分类号： G03G15/00 ,  G03G15/09 ,  G03G15/01

    CPC分类号： G03G15/754 ,  G03G15/0907 ,  G03G2215/018

    摘要： A plurality of electrostatic images are formed on a moving tensioned belt (26) comprising an electrically conductive base (58) having a non-conductive image-carrying surface layer (59). The images are developed by passing the belt through a plurality of toner development stations, each of which includes a development unit (35, 36, 37, 38) including a magnetic roller (51) and a backing member (53), in opposed position to the magnetic roller (51), over which the belt (26) passes. Under non-ideal conditions (defined in the text), the image quality in terms of image density and uniformity of image density and rendition of sharp image transitions, is substantially improved by using an alternating electrical field between the magnetic roller (51) and the belt (26), the peak-to-peak voltage of which is greater than 800 volts.

    摘要翻译： 在包括具有不导电图像承载表面层（59）的导电基底（58）的移动张紧带（26）上形成多个静电图像。 通过使带穿过多个调色剂显影台来显影图像，每个调色剂显影台包括显影单元（35,36,37,38），显影单元包括磁性辊（51）和背衬构件（53），处于相对位置 （26）通过的磁性辊（51）上。 在非理想条件下（在文中定义），通过使用磁辊（51）和磁辊（51）之间的交变电场，显着提高了图像密度和图像密度均匀性以及清晰图像转变再现的图像质量 带（26），其峰 - 峰电压大于800伏。