| 摘要 |
PURPOSE: To obtain an excellent image, by providing plural developer control members controlling the thickness of the developer on a developer carrier, and allowing to satisfactorily perform static charge of the developer, in a one component developing device. CONSTITUTION: This device is provided with a first blade 4a on the upstream side corresponding to the rotary direction of a developing roller 3, and the second blade 4b on the downstream side, in a state that respective end part of them as a free edge is abutted on the roller 3 while directing toward the downstream direction with regard to the rotary direction of the developing roller 3, via a holder 14 provided on a photoreceptor side tip of a case 2 of the developing device. In this way, the triboelectrication to the toner is performed twice by two pieces of blade 4a and 4b, therefore the static charge for the toner can be performed more thoroughly than the case only one blade is provided, and the toner attraction control onto the photoreceptor drum 1 can be excellently executed at the time of developing. |
