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    ELECTROPHOTOGRAPHIC ROLLER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS
    1.
    发明公开
    ELECTROPHOTOGRAPHIC ROLLER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS 审中-公开

    公开(公告)号：EP3413138A1

    公开(公告)日：2018-12-12

    申请号：EP18175471.4

    申请日：2018-06-01

    申请人： CANON KABUSHIKI KAISHA

    发明人： UEMATSU, Atsushi ,  GOTO, Mototeru ,  KODAMA, Masataka

    IPC分类号： G03G15/02

    CPC分类号： G03G15/0233 ,  G03G5/14708 ,  G03G15/0818 ,  G03G15/1685 ,  G03G2215/025 ,  G03G2221/183

    摘要： The electrophotographic roller has a surface layer comprising an electro-conductive elastic layer on an electro-conductive substrate. The opening of a bowl-shaped resin particle is exposed on the surface of the electrophotographic roller. The number of contact portions of the convex portion with the glass plate in a square region where a length of a nip in a direction along the circumferential direction of the electrophotographic roller of a nip formed by pressing the roller on the glass plate with a specific load applied as the length of one side and is located at any position in the nip is 8 or more. The average value of the areas of the contact portions is 10 µm 2 to 111 µm 2 . The variation coefficient of the areas of the contact portions and the variation coefficient D of the areas of a plurality of Voronoi regions each including a contact portion satisfy specific relationships.

    Image forming apparatus, process cartridge and toner
    3.
    发明授权
    Image forming apparatus, process cartridge and toner 有权
    成像设备，处理盒和调色剂

    公开(公告)号：EP2028567B1

    公开(公告)日：2018-04-11

    申请号：EP08162828.1

    申请日：2008-08-22

    申请人： Ricoh Company, Ltd.

    发明人： Katoh, Hiroaki ,  Nakatake, Naoki ,  Yasunaga, Hideaki ,  Fuwa, Kazuoki ,  Mikuriya, Yoshihiro ,  Hagi, Masayuki

    IPC分类号： G03G21/00

    CPC分类号： G03G21/0017 ,  G03G2215/0132 ,  G03G2215/0617 ,  G03G2221/183

    摘要： An image forming apparatus including an image bearing member (2K) including a tube, the image bearing member (2K) to bear a latent electrostatic image, a development device (5K) including a pulverized toner including a resin, a coloring agent and a releasing agent component, the development device (5K) to develop the latent electrostatic image with the toner to form a visualized image on the image bearing member (2K), a transfer device (20) to transfer the visualized image to a recording medium (P), a fixing device (34) including a fixing member (34a), the fixing device (34) to fix the visualized image on the recording medium and an elastic blade (308K) to remove the toner on the surface of the image bearing member (2K), wherein the toner has a void ratio of from 52 to 58 % and a toner torque of from 1.0 to 2.5 mNm according to a torque measuring method using a circular conical rotor and the following relationships 1 to 4 are satisfied: 45 ‰¤ WA ‰¤ 60 2 × WA - 40 ‰¤ 50 × T ‰¤ 2 × WA + 5 1.2 ‰¤ t ‰¤ 2.0 40 × T - 70 ‰¤ 15 × t ‰¤ 40 × T - 22 where WA, expressed in %, represents a surface exposure amount of the releasing agent component of the toner, T, expressed in mNm, represents the toner torque at 58 % of the void ratio and t, expressed in mm, represents a thickness of the tube.

    Image forming apparatus with paper feeding device
    4.
    发明授权
    Image forming apparatus with paper feeding device 有权
    具有送纸装置的图像形成装置

    公开(公告)号：EP2246196B1

    公开(公告)日：2018-03-21

    申请号：EP10008296.5

    申请日：2005-03-31

    申请人： BROTHER KOGYO KABUSHIKI KAISHA

    发明人： Ito, Sakae ,  Tsusaka, Shusaku ,  Tamaru, Yasuo ,  Aratachi, Tomitake ,  Ito, Terumasa

    IPC分类号： G03G21/16 ,  G03G15/00

    CPC分类号： G03G21/1853 ,  G03G15/6552 ,  G03G15/6567 ,  G03G21/1609 ,  G03G2215/00421 ,  G03G2215/00679 ,  G03G2221/183

    摘要： An image forming apparatus includes a main casing (2); a photosensitive member (27); a process cartridge (17) that can be installed or removed with respect to the main casing along a removal path; a scanner unit (16) located above the process cartridge when the process cartridge is installed in the main casing; a sheet accommodating portion (6) located at a bottom portion of the main casing; a pick-up roller (8) located above the sheet accommodating portion; and a feed path along which a sheet can be conveyed from the sheet accommodating portion to a discharge port. At least a part of the feed path is substantially parallel to the removal path and located between the sheet accommodating portion and the process cartridge when the process cartridge is installed in the main casing; the scanner unit includes a frame including a first portion having a first height and a second portion having a second height that is less than the first height, the second portion being located closer to the pick-up roller than the first portion; and an image forming position (P) where an image is transferred from the photosensitive member to the sheet is located along the feed path at a position lower than an upper surface of the pick-up roller in a direction perpendicular to the removal path.

    Charging device, image forming unit and image forming apparatus
    6.
    发明公开
    Charging device, image forming unit and image forming apparatus 审中-公开
    Ladevorrichtung，Bilderzeugungseinheit und Bilderzeugungsvorrichtung

    公开(公告)号：EP2871528A1

    公开(公告)日：2015-05-13

    申请号：EP14190986.1

    申请日：2014-10-30

    申请人： Oki Data Corporation

    发明人： Higaki, Toshimasa

    IPC分类号： G03G15/02

    CPC分类号： G03G15/0233 ,  G03G15/0208 ,  G03G15/0216 ,  G03G15/025 ,  G03G15/1685 ,  G03G2215/021 ,  G03G2221/183

    摘要： A charging device (12) includes a charging member (19) that charges a surface of an image bearing body (11). The charging member (19) includes a rotation shaft (19a) applied with a voltage, and a resilient conductive layer (19b) provided on an outer circumferential surface of the rotation shaft (19a). The resilient conductive layer (19b) charges the surface of the image bearing body (11). The resilient conductive layer (19b) has a plurality of high resistance regions (19c) arranged at intervals in an axial direction (D) of the rotation shaft (19a).

    摘要翻译： 充电装置（12）包括对图像承载体（11）的表面充电的充电构件（19）。 充电构件（19）包括施加有电压的旋转轴（19a）和设置在旋转轴（19a）的外周面上的弹性导电层（19b）。 弹性导电层（19b）对图像承载体（11）的表面进行充电。 弹性导电层（19b）具有沿旋转轴（19a）的轴向（D）间隔设置的多个高电阻区域（19c）。

    A developer supply system
    10.
    发明公开
    A developer supply system 审中-公开
    显影剂供应系统

    公开(公告)号：EP1962147A3

    公开(公告)日：2014-08-06

    申请号：EP08006145.0

    申请日：2000-11-29

    申请人： CANON KABUSHIKI KAISHA

    发明人： Yahagi, Takashi

    IPC分类号： G03G15/08

    CPC分类号： G03G15/0886 ,  G03G15/0855 ,  G03G15/0865 ,  G03G15/0868 ,  G03G15/0875 ,  G03G2215/0119 ,  G03G2215/0129 ,  G03G2215/068 ,  G03G2215/0692 ,  G03G2215/085 ,  G03G2221/183

    摘要： A developer supply cartridge detachably mountable to a main assembly of an image forming apparatus, includes a developer accommodating portion of accommodating a developer; a discharging opening for discharging the developer accommodated in the developer accommodating portion to a developer receiving opening of a developer receiving cartridge provided with developing means for developing an electrostatic image formed on an image bearing member with the developer, the developer receiving cartridge being detachably mountable to the main assembly of the image forming apparatus; a shutter member movable between an opening position for opening the discharging opening and a closing position for closing the discharging opening; an engaging portion for engagement with the developer receiving cartridge so as to receive, from the developer receiving cartridge, a force for moving the shutter member from the closing position to the opening position, in interrelation with a relative movement between the developer supply cartridge and the developer receiving cartridge toward each other in a mounting-and-demounting direction of the developer supply cartridge relative to the main assembly of the image forming apparatus.