ELECTRIFYING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS
To provide an electrifying device capable of suppressing the surface of a contact type electrifying member from being contaminated without increasing the size and to provide a process cartridge and an image forming apparatus.SOLUTION: The electrifying device includes an image carrier, an electrifyin...
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Sprache: | eng ; jpn |
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Zusammenfassung: | To provide an electrifying device capable of suppressing the surface of a contact type electrifying member from being contaminated without increasing the size and to provide a process cartridge and an image forming apparatus.SOLUTION: The electrifying device includes an image carrier, an electrifying member which comes into contact with the image carrier and electrifies the image carrier, while being rotated, and a cleaning member which comes into contact with the surface of the electrifying member with predetermined contact pressure. The cleaning member includes magnetic field generation means for holding a magnetic developer in a rubbing part for rubbing the surface of the electrifying member. In the rubbing part, the magnetic developer and paper powder are electrified to have the same polarity as that of the surface of the image carrier and the magnetic developer and the paper powder having the same polarity are returned to the image carrier by a potential difference between the electrifying member and the image carrier.SELECTED DRAWING: Figure 3
【課題】大型化することなく、接触帯電方式の帯電部材の表面が汚染されることを抑制できる帯電装置、プロセスカートリッジ及び画像形成装置を提供する。【解決手段】像担持体と、前記像担持体と接触し回転しながら前記像担持体を帯電する帯電部材と、前記帯電部材の表面に所定の接触圧で接触する清掃部材と、を有する帯電装置であって、前記清掃部材は、前記帯電部材の表面と摺擦する摺擦部において磁性現像剤を保持する磁界発生手段を有し、前記摺擦部において、前記磁性現像剤と紙粉を前記像担持体の表面と同極性になるように帯電させ、前記同極性の磁性現像剤及び紙粉を、前記帯電部材と前記像担持体との電位差によって前記像担持体に戻すことを特徴とする。【選択図】図3 |
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