公开(公告)号：US20050244176A1

公开(公告)日：2005-11-03

申请号：US11113241

申请日：2005-04-25

申请人： Hiroshi Nakai ,  Yasuo Suzuki ,  Nozomu Tamoto ,  Takahiko Tokumasu ,  Kazahiko Watanabe ,  Kohichi Ohshima ,  Noboru Tsukude ,  Nekka Matsuura ,  Hiroshi Ikuno

发明人： Hiroshi Nakai ,  Yasuo Suzuki ,  Nozomu Tamoto ,  Takahiko Tokumasu ,  Kazahiko Watanabe ,  Kohichi Ohshima ,  Noboru Tsukude ,  Nekka Matsuura ,  Hiroshi Ikuno

IPC分类号： G03G9/08 ,  G03G9/107 ,  G03G15/00 ,  G03G15/02

CPC分类号： G03G15/02 ,  G03G9/0821 ,  G03G9/0823 ,  G03G9/0827 ,  G03G9/107 ,  G03G2215/02 ,  G03G2215/0609 ,  G03G2221/1609

摘要： In an image forming apparatus that employs a system of charging by adjacent discharge, not only can degradation of the photoreceptor surface caused by adjacent discharge be prevented, but also there is no side effect on the developer, and at the same time size reduction is achieved. The image forming apparatus comprises an object to be charged whose surface moves; a charging device for charging the object to be charged using an electrical discharge generated by applying a voltage comprising an alternating current component to a charging member provided in contact with or in proximity to the object to be charged; a latent image forming device for forming an electrostatic latent image on the surface of the object charged by the charging device; and a developing device for causing a two-component developer to come into contact with the image portion of the electrostatic latent image formed by the latent image forming device and affixing toner thereto. A protective substance is present on the surface of the object to be charged in the discharge region for charging the object to be charged, and the saturation magnetization of the carrier of the two-component developer with respect to an applied magnetic field of 1000 oersted is 40 to 80 emu/g.

摘要翻译： 在采用相邻放电充电系统的图像形成装置中，不仅可以防止由相邻放电引起的感光体表面的劣化，而且对显影剂也没有副作用，同时实现尺寸减小 。 图像形成装置包括表面移动的被充电物体; 充电装置，用于通过将包括交流分量的电压施加到与要充电的物体接触或接近的设置的充电部件产生的放电来对待充电的物体进行充电; 用于在由充电装置充电的物体的表面上形成静电潜像的潜像形成装置; 以及用于使双组分显影剂与由潜像形成装置形成的静电潜像的图像部分接触并将调色剂附着到其上的显影装置。 在被充电物体的放电区域的被充电物体的表面上存在保护物质，双成分显影剂的载体相对于所施加的1000奥斯特的磁场的饱和磁化强度为 40至80 emu / g。

公开(公告)号：US07295788B2

公开(公告)日：2007-11-13

申请号：US11113241

申请日：2005-04-25

申请人： Hiroshi Nakai ,  Yasuo Suzuki ,  Nozomu Tamoto ,  Takahiko Tokumasu ,  Kazahiko Watanabe ,  Kohichi Ohshima ,  Noboru Tsukude ,  Nekka Matsuura ,  Hiroshi Ikuno

发明人： Hiroshi Nakai ,  Yasuo Suzuki ,  Nozomu Tamoto ,  Takahiko Tokumasu ,  Kazahiko Watanabe ,  Kohichi Ohshima ,  Noboru Tsukude ,  Nekka Matsuura ,  Hiroshi Ikuno

IPC分类号： G03G15/00 ,  G03G15/02 ,  G03G15/09

CPC分类号： G03G15/02 ,  G03G9/0821 ,  G03G9/0823 ,  G03G9/0827 ,  G03G9/107 ,  G03G2215/02 ,  G03G2215/0609 ,  G03G2221/1609

摘要： An image forming apparatus includes an object to be charged whose surface moves. A charging device for charging the object uses an electrical discharge generated by applying a voltage including an alternating current component to a charging member provided in contact with or in proximity to the object. A latent image forming device forms an electrostatic latent image on the surface of the object. A developing device causes a two-component developer to come into contact with the image portion of the electrostatic latent image formed by the latent image forming device and affixes toner thereto. A protective substance is present on the surface of the object in the discharge region for charging the object, and the saturation magnetization of the carrier of the two-component developer with respect to an applied magnetic field of 1000 oersted is 40 to 80 emu/g.

摘要翻译： 图像形成装置包括表面移动的被充电物体。 用于对物体充电的充电装置使用通过将包括交流分量的电压施加到与物体接触或接近的设置的充电构件而产生的放电。 潜像形成装置在物体的表面上形成静电潜像。 显影装置使双组分显影剂与由潜像形成装置形成的静电潜像的图像部分接触并将调色剂附着在其上。 在用于对物体充电的放电区域中的物体表面上存在保护物质，并且相对于1000奥斯特施加的磁场，双组分显影剂的载体的饱和磁化强度为40至80emu / g 。