ELECTROPHOTOGRAPHIC PHOTORECEPTOR, METHOD FOR MANUFACTURING ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS

• Main Authors: NAKAMURA HIROSHI, KAMIJO YUKIKO
• Format: Patent
• Language: English; Japanese
• Published: 11.04.2019
• Subjects: CINEMATOGRAPHY; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; MAGNETOGRAPHY; PHOTOGRAPHY; PHYSICS

To provide an electrophotographic photoreceptor that prevents the occurrence of an unintended color point in an image formed after repetition of image formation, while preventing an afterimage phenomenon in an image formed at a high process speed due to the history of a previous cycle.SOLUTION: An electrophotographic photoreceptor comprises: a conductive substrate; and a single-layer photosensitive layer that is provided on the conductive substrate and contains a binder resin and charge generating material, where in the single-layer photosensitive layer, the charge generating material is not present in an area on the conductive substrate side, and the thickness of the area on the conductive substrate side where the charge generating material is not present is 1% or more and 15% or less of the film thickness of the single-layer photosensitive layer.SELECTED DRAWING: None 【課題】速いプロセススピードで形成された画像における前サイクルの履歴による残像現象を抑制しつつ、画像形成を繰り返した後に形成された画像における意図しない色点の発生を抑制した電子写真感光体の提供。【解決手段】導電性基体と、前記導電性基体上に設けられ結着樹脂と電荷発生材料とを含有する単層型の感光層であって、前記導電性基体側の領域に前記電荷発生材料が存在せず、かつ、前記電荷発生材料が存在しない前記導電性基体側の領域の厚みは前記単層型の感光層における膜厚の１％以上１５％以下である単層型の感光層と、を有する電子写真感光体。【選択図】なし