Developing device

Abstract

Abstract PURPOSE:To prevent a developer from being deposited almost in the middle between electrodes and to improve the conveyance performance of the developer by improving the shape of electrodes of a developing device which conveys the developer to a picture to be developed by moving the developer among the electrodes. CONSTITUTION:A plate type toner carrier 19 is provided in a toner container 16 provided facing the photosensitive drum 11 of an electronic copying machine. A copper-made electrode group 20 formed linearly is provided on the surface of the toner carrier 19 at equal intervals in parallel to the axial direction of the photosensitive drum 11. On the other hand, the electrode group 20 is applied with a potential which varies successively with time to generate an alternating electric field which has progressive waveform from the left to the right on the surface of the toner carrier 19, and toner is conveyed by its operation among electrodes on oscillation, floating, and smoke basis. In this case, and surfaces of respective electrodes are made hemispherical to obtain a distribution of lines of electric forces among the electrodes as shown by dotted lines in a figure, and the lines of electric force operate to contribute the movement of the toner effectively.

Inventors

• 👤 Takeshi Nozaki
• 👤 武史 野崎
• 👤 Masahiro Hosoya
• 👤 雅弘 細矢
• 👤 Koji Tanimoto
• 👤 弘二 谷本

Bibliographic Details