公开(公告)号：US20160147174A1

公开(公告)日：2016-05-26

申请号：US14939057

申请日：2015-11-12

申请人： Makoto YASUDA ,  Jun HITOSUGI ,  Takamasa OZEKI ,  Mutsuki MORINAGA ,  Emiko SHIRAISHI ,  Wakana ITOH ,  Hitoshi YAMAMOTO ,  Takatsugu KOMORI ,  Kunio HASEGAWA ,  Tadashi KASAI ,  Kazuaki KAMIHARA ,  Kazumi KOBAYASHI ,  Hiroyuki KUNll ,  Masaki SUKESAKO ,  Yuichi AIZAWA ,  Masakazu TERAO ,  Masayoshi NAKAYAMA ,  Takuma HIGA ,  Masahiro KATOH ,  Kohei MATSUMOTO

发明人： Makoto YASUDA ,  Jun HITOSUGI ,  Takamasa OZEKI ,  Mutsuki MORINAGA ,  Emiko SHIRAISHI ,  Wakana ITOH ,  Hitoshi YAMAMOTO ,  Takatsugu KOMORI ,  Kunio HASEGAWA ,  Tadashi KASAI ,  Kazuaki KAMIHARA ,  Kazumi KOBAYASHI ,  Hiroyuki KUNll ,  Masaki SUKESAKO ,  Yuichi AIZAWA ,  Masakazu TERAO ,  Masayoshi NAKAYAMA ,  Takuma HIGA ,  Masahiro KATOH ,  Kohei MATSUMOTO

IPC分类号： G03G15/08

CPC分类号： G03G15/0824 ,  G03G15/0844 ,  G03G15/0849

摘要： An image forming apparatus includes a latent image bearer; a developing device containing two-component developer and including a developer bearer, a development voltage source, and a toner concentration detector; a toner supply device to supply toner to the developing device; a transfer device; and a controller to keep a toner concentration in the developer in the developing device at a target toner concentration during image formation. The controller executes forced toner consumption in which the developing device supplies the toner to the latent image bearer the toner at a predetermined forced toner consumption timing, while inhibiting the toner supply device from supplying toner. When the toner concentration falls to a prescribed toner density lower than the target toner concentration, the controller completes the forced toner consumption and executes a post-consumption toner supply operation.

摘要翻译： 图像形成装置包括潜像载体; 包含双组分显影剂并包括显影剂承载体的显影装置，显影电压源和调色剂浓度检测器; 调色剂供应装置，用于向显影装置供应调色剂; 转移装置; 以及控制器，用于在图像形成期间将显影装置中的显影剂中的调色剂浓度保持在目标调色剂浓度。 控制器执行强制调色剂消耗，其中在抑制调色剂供应装置供应调色剂的同时，显影装置以预定的强制调色剂消耗时间将调色剂供给到潜像承载调色剂。 当调色剂浓度降低到低于目标调色剂浓度的规定调色剂浓度时，控制器完成强制调色剂消耗并执行消耗后调色剂供应操作。

公开(公告)号：US20180143581A1

公开(公告)日：2018-05-24

申请号：US15714610

申请日：2017-09-25

申请人： Masayoshi NAKAYAMA ,  Takuma HIGA ,  Masaki SUKESAKO ,  Masashi TACHI ,  Kazuaki KAMIHARA ,  Yuichi AIZAWA ,  Tomohide TAKENAKA ,  Kohei MATSUMOTO

发明人： Masayoshi NAKAYAMA ,  Takuma HIGA ,  Masaki SUKESAKO ,  Masashi TACHI ,  Kazuaki KAMIHARA ,  Yuichi AIZAWA ,  Tomohide TAKENAKA ,  Kohei MATSUMOTO

IPC分类号： G03G21/00

CPC分类号： G03G21/0094 ,  G03G15/0126 ,  G03G15/065 ,  G03G15/0907

摘要： An electrophotographic image forming apparatus includes a latent image bearer to rotate and bear a latent image, a charging device to charge the a latent image bearer, a developing device to develop the latent image with developer including toner and use a developing voltage including an AC component, and a lubricant applicator to apply lubricant onto a surface of the latent image bearer. An amount of the lubricant applied by the lubricant applicator onto the latent image bearer per centimeter in an axial direction of the latent image bearer is equal to or greater than 0.845 mg for a running distance of 1.0 kilometer of the latent image bearer, and a difference between a largest value and a smallest value of the developing voltage is in a range of 200 V to 400 V.

公开(公告)号：US20150078788A1

公开(公告)日：2015-03-19

申请号：US14451968

申请日：2014-08-05

申请人： Toshio KOIKE ,  Kiyonori TSUDA ,  Yutaka TAKAHASHI ,  Yuichi AIZAWA ,  Keinosuke KONDOH ,  Kentaro MIKUNIYA

发明人： Toshio KOIKE ,  Kiyonori TSUDA ,  Yutaka TAKAHASHI ,  Yuichi AIZAWA ,  Keinosuke KONDOH ,  Kentaro MIKUNIYA

IPC分类号： G03G15/09

CPC分类号： G03G15/0907 ,  G03G15/0921

摘要： A developing device includes a developer bearer to carry, by rotation, developer including toner and magnetic carrier to a development range facing a latent image bearer, and the developer bearer includes a magnetic field generator having multiple magnetic poles and a cylindrical developing sleeve to rotate and bear developer on an outer circumferential face thereof with magnetic force of the magnetic field generator provided inside the developing sleeve. The developing sleeve receives developing bias voltage including an AC component, and includes a base to maintain a cylindrical shape of the developing sleeve and a low friction surface layer including a material lower in friction coefficient with toner than a material of the base.

摘要翻译： 显影装置包括：显影剂载体，通过旋转将包含调色剂和磁性载体的显影剂携带到面向潜像承载体的显影范围内，并且显影剂载体包括具有多个磁极的磁场发生器和用于旋转的圆柱形显影套筒， 用显影套筒内部的磁场发生器的磁力使显影剂的外周面承载显影剂。 显影套筒承受包括AC部件的显影偏压，并且包括保持显影套筒的圆柱形状的基座和包括与调色剂相比摩擦系数低于材料的材料的低摩擦表面层。