公开(公告)号：US5689782A

公开(公告)日：1997-11-18

申请号：US485772

申请日：1995-06-07

申请人： Eisaku Murakami ,  Kazuhiro Yuasa ,  Shuichi Endoh ,  Iwao Matsumae ,  Yoshiaki Tanaka ,  Hiroshi Hosokawa ,  Mugiziroh Uno ,  Hiroshi Saitoh ,  Eizi Takenaka ,  Toshihiro Sugiyama ,  Tetsuo Yamanaka ,  Satoru Komatsubara

发明人： Eisaku Murakami ,  Kazuhiro Yuasa ,  Shuichi Endoh ,  Iwao Matsumae ,  Yoshiaki Tanaka ,  Hiroshi Hosokawa ,  Mugiziroh Uno ,  Hiroshi Saitoh ,  Eizi Takenaka ,  Toshihiro Sugiyama ,  Tetsuo Yamanaka ,  Satoru Komatsubara

IPC分类号： G03G15/08

CPC分类号： G03G15/0808 ,  G03G2215/0869

摘要： A developing apparatus is capable of providing stable charging ability for a developer and stable transfer ability for transferring the developer to a photoreceptor for electronic photography to prevent residual positive images and stain of texture which appear on a toner image. A first toner transfer roller 23 has a core supported to be rotatable and a sheet type insulation layer wound around the outer periphery of the core. The insulation layer is made of elastic rubber in which magnetic material having a specified particle size is uniformly dispersed and the magnetic material is formed with ferromagnetic substance such as magnet and magnetized in advance. The first toner transfer roller 23 attracts toner T by actuating magnetism on the insulation layer since the magnetic material added to the insulation layer is magnetized.

摘要翻译： 显影装置能够为显影剂提供稳定的充电能力，并且具有稳定的转印能力，用于将显影剂转印到用于电子摄影的感光体上，以防止出现在调色剂图像上的残留的正像和污点。 第一调色剂转印辊23具有被支撑为可旋转的芯和围绕芯的外周缠绕的片状绝缘层。 绝缘层由弹性橡胶制成，其中具有特定粒度的磁性材料均匀分散，并且磁性材料由磁铁等铁磁性物质形成，并预先磁化。 由于添加到绝缘层的磁性材料被磁化，所以第一调色剂转印辊23通过驱动绝缘层上的磁性来吸引调色剂T.