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1. 发明申请

WO2011009732A1 DEVELOPING DEVICE AND METHOD 审中-公开
标题翻译：开发设备和方法
公开(公告)号：WO2011009732A1
公开(公告)日：2011-01-27
申请号：PCT/EP2010/059783
申请日：2010-07-08
申请人： EASTMAN KODAK COMPANY , SCHULZE-HAGENEST, Detlef , ROHDE, Domingo
发明人： SCHULZE-HAGENEST, Detlef , ROHDE, Domingo
IPC分类号： G03G15/08 , G03G15/09
CPC分类号： G03G15/0803 , G03G15/0935 , G03G2215/0621 , G03G2215/0634
摘要： A developing device for transferring toner particles to a photoconductor comprises a container for holding a developer of non-magnetic toner particles and hard magnetic carrier particles, a first developer roller which is at least partially arranged in said container and features a non-magnetic jacket tube and a magnetic core, the jacket tube and the magnetic core each being arranged so as to be rotatable about corresponding rotational axes, and at least a second developer roller which is arranged adjacent to the first developer roller in such a manner that carrier particles with toner particles adhering to them and being carried along by rotation of the first developer roller, contact the second developer roller in order to transfer the toner particles in a contacting manner to the second developer roller, said second developer roller being supported so as to be rotatable about a corresponding rotational axis. There are provided at least one drive unit for rotating the jacket tube, the magnetic core and the second developer roller, each about its respective rotational axis, as well as means for generating an alternating voltage field adjacent to the second developer roller in the region of an adjacent photoconductor. In a method for generating a toner image on a photoconductor, a charge image is first formed on the photoconductor and, subsequently, toner is applied, correspondingly to the charge image, to the photoconductor by way of a developing device. When the toner is being applied, the toner particles are triboelectrically charged in a developer of non-magnetic toner particles and hard magnetic carrier particles, the carrier particles with toner particles adhering to them are brought into contact with and transported by a first developer roller comprising a rotating non-magnetic jacket tube and a magnetic core rotating inside said jacket tube, the toner particles are transferred to a second developer roller arranged adjacent to the first developer roller and rotated in such a manner that carrier particles with the toner particles adhering to them contact the second developer roller, the photoconductor is moved at a prespecified distance along the rotating second developer roller, an alternating voltage field is generated in the region between the second developer roller and the photoconductor in order to generate via this means a cloud of toner particles in this region, and the toner particles are attracted to the photoconductor corresponding to the charge image.
摘要翻译：用于将调色剂颗粒转印到感光体的显影装置包括用于保持非磁性调色剂颗粒和硬磁性载体颗粒的显影剂的容器，至少部分地布置在所述容器中的第一显影辊，并且具有非磁性套管以及磁芯，所述护套管和所述磁芯各自被布置为能够围绕相应的旋转轴线旋转;以及至少第二显影辊，其布置成与所述第一显影剂辊相邻，使得具有调色剂的载体颗粒粘附到它们上并通过第一显影辊的旋转携带的颗粒接触第二显影辊，以便以接触的方式将调色剂颗粒转移到第二显影辊，所述第二显影辊被支撑成可围绕相应的旋转轴。提供至少一个驱动单元，用于围绕其相应的旋转轴线旋转护套管，磁芯和第二显影辊，以及用于在区域中产生与第二显影辊相邻的交变电压场的装置相邻的感光体。在用于在光电导体上产生调色剂图像的方法中，首先在感光体上形成电荷图像，并且随后通过显影装置将调色剂相应于电荷图像施加到感光体上。当施加调色剂时，将调色剂颗粒摩擦带电到非磁性调色剂颗粒和硬磁性载体颗粒的显影剂中，附着有调色剂颗粒的载体颗粒与第一显影辊接触并由第一显影辊传送，第一显影辊包括旋转的非磁性套管和在所述护套管内旋转的磁芯，调色剂颗粒被转移到与第一显影剂辊相邻布置的第二显影辊，并以使调色剂颗粒附着于其上的载体颗粒旋转接触第二显影辊，光电导体沿着旋转的第二显影辊以预定的距离移动，在第二显影辊和感光体之间的区域中产生交变电压场，以通过这种方式产生一个调色剂颗粒云在该区域中，调色剂颗粒被吸引到感光体c 或对应于费用图像。

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