| 摘要 |
An electrophotographic photoreceptor comprises a conductive support and, at least a photosensitive layer on the conductive support, wherein the photosensitive layer includes a polyarylate resin and the polyarylate resin has a repeating structure represented by formula (1), and the amount of bisphenol residues represented by formula (3) after the polyarylate resin is hydrolyzed, is 0.2% to 1%, in terms of intensity ratio, based on the total amount of bisphenol residues represented by formula (2) and formula (3) after the polyarylate resin is hydrolyzed, the bisphenol residues being detected with a gas chromatograph employing a hydrogen flame ionization detector (FID). |
| 主权项 |
1. An electrophotographic photoreceptor comprising a conductive support and, at least a photosensitive layer on the conductive support, wherein the photosensitive layer comprises a polyarylate resin and the polyarylate resin has a repeating structure represented by formula (1), and the amount of bisphenol residues represented by formula (3) after the polyarylate resin is hydrolyzed, is 0.2% to 1%, in terms of intensity ratio, based on the total amount of bisphenol residues represented by formula (2) and formula (3) after the polyarylate resin is hydrolyzed, the bisphenol residues being detected with a gas chromatograph employing a hydrogen flame ionization detector (FID): wherein in formulae (1) to (3), Y each independently represent at least one divalent group selected from the group consisting of an m-phenylene group, a p-phenylene group, and a divalent group configured of two p-phenylene groups bonded to each other by an oxygen atom, n indicates the number of repetitions, X each represent a single bond, —CR1R2—, O, CO, or S, and R1 and R2 each independently represent a hydrogen atom, a methyl group, or an ethyl group, or R1 and R2 represent a cyclohexylidene group formed by the R1 and R2 bonded to each other. |
