| 摘要 |
A developing apparatus has a rotatable, non-magnetic sleeve positioned opposite to an electrostatic latent image-bearing member moving in one direction; a magnet member having a plurality of magnetic poles, one of which serves as a main magnetic pole positioned in a developing area, and being stationary in the sleeve; and a container for a magnetic developer which is supplied onto the sleeve, the magnet member generating near the main magnetic pole on the sleeve a magnetic attraction force having a circumferential distribution which shows (a) a minimum value F1 near the center of the main magnetic pole and (b) a maximum value F2 downstream of a position at which the image-bearing member is the closest to the sleeve, with respect to the rotational direction of the sleeve.
|
