ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC DEVICE

• Main Authors: SEKIDO KUNIHIKO, NISHI MASAFUMI, SEKIYA MICHIYO
• Format: Patent
• Language: English; Japanese
• Published: 16.11.2017
• Subjects: CINEMATOGRAPHY; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; MAGNETOGRAPHY; PHOTOGRAPHY; PHYSICS

PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor having high adhesiveness between an undercoat layer and a photosensitive layer.SOLUTION: An electrophotographic photoreceptor has a support body, an undercoat layer, and a photosensitive layer adjoining to the undercoat layer, in this order, in which the undercoat layer comprises: a polymerized product of a composition containing an electron transporting substance having a polymerizable functional group, a crosslinking agent and a thermoplastic resin having a polymerizable functional group; and at least one type of particles selected from resin particles having a hollow structure and rubber particles. The content of the electron transporting substance in the undercoat layer is 30 mass% or more with respect to the total mass of the composition; and the content of the particles in the undercoat layer is 10 mass% or more and 100 mass% or less with respect to the content of the electron transporting substance.SELECTED DRAWING: None 【課題】 下引き層と感光層との密着性が高い電子写真感光体を提供すること。【解決手段】 支持体と、下引き層と、該下引き層と隣接する感光層と、をこの順に有する電子写真感光体において、該下引き層が、重合性官能基を有する電子輸送物質、架橋剤及び重合性官能基を有する熱可塑性樹脂を含む組成物の重合物と、中空構造を有する樹脂粒子及びゴム粒子から選択される少なくとも何れか１種の粒子と、を含有し、該下引き層における、該電子輸送物質の含有量が、該組成物の全質量に対して、３０質量％以上であり、該下引き層における、該粒子の含有量が、該電子輸送物質の含有量に対して、１０質量％以上１００質量％以下であることを特徴とする電子写真感光体。【選択図】 なし