POSITIVE CHARGE TYPE ELECTROPHOTOGRAPHIC PHOTOSENSITIZER FOR LIQUID DEVELOPER, WHICH HAS PROTECTIVE LAYER COMPRISING ALCOHOL-SOLUBLE POLYAMIDE RESIN AND ELECTRON TRANSPORT MATERIAL

摘要

PURPOSE: Provided is a positive charge type electrophotographic photosensitizer, which has excellent resistance and durability against liquid developers, and thus gives excellent image quality. CONSTITUTION: The positive charge type electrophotographic photosensitizer includes a conductive substrate, and a photosensitive layer and a protective layer formed on the top of the substrate, successively. In the photosensitizer, the protective layer comprises an alcohol-soluble polyamide resin and an electron transport material. Particularly, the electron transport material is an electron transportable pigment having an average diameter of 0.1 to 0.2 micrometers. Further, content of the electron transport material is 10-200 parts by weight based on 100 parts by weight of the alcohol-soluble polyamide resin.