| 摘要 |
PROBLEM TO BE SOLVED: To increase, without decreasing an amount of electrified toner, an amount of toner which is carried to a developing area, to prevent deterioration in gradation, and to prevent a base from being soiled. SOLUTION: A developing device 24 using two-component developer D is provided with a developing sleeve (developer carrier) 33 opposite to a photoreceptor drum (image carrier) 21 in a developing area, and a restricting member 35 opposed to the developing sleeve 33 in a developer restricting area is disposed. Also, a counter electrode 37 is disposed further downstream than the developing area and further upstream than the developer restricting area in the direction of the rotation of the developing sleeve 33 and opposite the developing sleeve 33, and is retained by a developing container 30 near an opening 30a. By the application of a voltage to the counter electrode 37 from a power source 38, an electric field in which force directed to the developing sleeve acts on toner is generated between the sleeve 33 and the counter electrode 37. |
