| 摘要 |
Disclosed is an electrophotographic photoreceptor which is excellent in wear resistance and electrical characteristics. Specifically disclosed is an electrophotographic photoreceptor containing a polyester resin in a photosensitive layer provided on an electroconductive substrate. The polyester resin is composed of a copolymer represented by the general formula 1 below, which has a viscosity average molecular weight (Mv) of 10,000-300,000 and contains a diphenyl ether 4,4'-dicarboxylic acid component and a bivalent phenol component. [Chemical Formula 1] <img id="PRIVATE-USE-CHARACTER-00001" he="7.20mm" wi="8.47mm" file="US07604913-20091020-Parenopenst.TIF" alt="private use character Parenopenst" img-content="character" img-format="tif" />A-B<img id="PRIVATE-USE-CHARACTER-00002" he="7.20mm" wi="8.47mm" file="US07604913-20091020-Parenclosest.TIF" alt="private use character Parenclosest" img-content="character" img-format="tif" />n (1) In the general formula 1, A represents a diphenyl ether 4,4'-dicarboxylic acid residue represented by the formula A below, and B represents a bivalent phenol residue represented by the formula B below. In the formula A, each of Ra1 and Ra2 independently represents a hydrogen atom or a monovalent substituent which may have a substituent, and each of n and m is independently an integer from 0 to 4. In the formula B, each of R1 and R2 independently represents one selected from the group consisting of a hydrogen atom, an alkyl group, an aryl group, a halogen group, and an alkoxy group.
|
