| abstract |
An electrophotographic method in which streaky filming hardly occurs on the surface of an electrophotographic photosensitive member even when a large number of originals having a small printing rate are printed in a low humidity environment, and a cross-deficient image is not generated on the image. Is to provide a device. In an electrophotographic apparatus having at least an electrophotographic photosensitive member, a charging unit, an exposure unit, a developing unit, a transfer unit, and a cleaning unit. The developer contains at least silica fine particles having a number average particle diameter of 0.06 μm to 0.30 μm, and the liberation ratio of silicon atoms to carbon atoms derived from the toner base is 5% by number to 30% by number. And The peripheral surface of the electrophotographic photosensitive member has a plurality of independent concave portions, the average major axis diameter of the concave portions is Rpc-A, and the distance between the deepest portion of the concave portions and the aperture surface is shown. When the average depth is Rdv-A, the ratio of the average depth (Rdv-A) to the average major axis diameter (Rpc-A) (Rdv-A / Rpc-A) is greater than 0.3. . [Selection figure] None |