| 摘要 |
PURPOSE:To enhance mechanical strength and to prevent crystallization and solvent cracking in an electrostatic charge transfer layer by forming a charge generating layer and a charge transfer layer using a specified polycarbonate resin. CONSTITUTION:The binder polymer used for the charge transfer layer is a copolycarbonate derived from bisphenol A represented by formula 1 and a dioxy compd. represented by formula 2, in a preferable ratio of 1:19-19:1, especially, 1:9-4:1, and a preferable mol.wt. of said polymer is 10,000-150,000. In formulae 1, 2, each of X, Y is H, halogen, or methyl, and R is H, halogen, OH, COOH, acetyl, or 1-4C alkyl. |
