PHOTORECEPTOR, AND IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS USING THE SAME

PROBLEM TO BE SOLVED: To provide a photoconductor which suppresses scumming and is excellent in durability.SOLUTION: There is provided a photoreceptor which has an intermediate layer and a photosensitive layer on a conductive support, where the intermediate layer contains metal oxide particles and a binder resin. A recessed part area ratio Smr of the intermediate layer defined by expression (1): Smr=Scut/Sk satisfies expression (2): 0.4≤Smr≤0.6. In expression (1), Sk represents a reference area; and Sout represents a cross-sectional area obtained by cutting a curved plane of the three-dimensional surface profile obtained on the reference area by an average height plane (a plane at an average height of height values of the all measured data)).SELECTED DRAWING: None 【課題】地肌汚れが抑制され、耐久性に優れた感光体を提供すること。【解決手段】（１）導電性支持体上に中間層及び感光層を有する感光体であって、前記中間層は金属酸化物粒子とバインダー樹脂とを含有し、前記中間層の下記式（１）で定義される凹部面積率Ｓｍｒが下記式（２）を満たすことを特徴とする感光体。Ｓｍｒ＝Ｓｃｕｔ／Ｓｋ （１）０．４≦Ｓｍｒ≦０．６ （２）（但し、式（１）中、Ｓｋは基準面積を示しＳｃｕｔは基準面積にて得られた３次元表面形状曲面を平均高さ面（全測定データの高さ値を平均した高さにて構成される面）にて切断して得られる断面積を示す）【選択図】なし