| 摘要 |
PURPOSE:To prevent deterioration of an image due to image trailing and unsharpening by using a combination of 2 kinds of polysulfone resins each having molecular weight in a specified range in a specified blending ratio for a photosensitive layer. CONSTITUTION:The photosensitive layer contains at least one of the polysulfone resins (I) each having a number average molecular weight of <=2.0X10<4>, and at least one of the polysulfone resins (II) each having a number average molecular weight of >=5.0X10<4> in a (I)/(II) blending ratio of, preferably, (30-95):(70-5) by weight. If (I)/(II) is below 30/70, proper abrasion resistance cannot be obtained, and it if is above 95/5, abrasion resistance and viscosity are made too low. If the number average molecular weight of the resin (II) is <5.0X10<4>, viscosity-raising effect is small, resulting in disabling control to proper abrasion resistance, thus permitting the photosensitive body superior also in durability to be obtained. |
