ELECTROPHOTOGRAPHIC SENSITIVE BODY AND ELECTROPHOTOGRAPHIC IMAGE FORMING METHOD USING SAID BODY

摘要

PURPOSE:To obtain an electrophotographic sensitive body with which a sharp image is obtd. without the flow of the image even at and under a high temp. and high humidity by providing a photosensitive layer having the surface hardness at which the load necessary for giving the scratch flaw of a specific width under specific conditions with a circular conical presser of diamond, etc. to said body is a specific value or above. CONSTITUTION:The photosensitive layer is formed on a conductive substrate so as to have the surface hardness at which the load necessary for giving the scratch flaw of 50mu width to the surface of said layer when the vertical load is suspended from the diamond or sapphire circular conical presser (semispherical body having 90 deg. circular conical angle and 0.01mm diameter at the top end) and is moved at 50mm/min speed along the surface is >=10g. More particularly, the construction laminated with an electric charge generating layer and charge transfer layer on the conductive substrate in this order is preferable for the photosensitive layer. The charge transfer layer formed by dispersing a photoconductive material into a binder resin is more preferable. The electrophotographic sensitive body which obviates the flow of the image even at and under the high temp. and high humidity as a result of the remaining of the deposit on the surface after cleaning or the chipping of the surface in the stage of cleaning the surface of the photosensitive layer is thus obtd.