| 摘要 |
PURPOSE:To shorten the time for engraving by incorporating >=1 functional groups into a polymer contained in the binder of a photoconductive layer in such a manner that these groups form a hydroxyl group and carboxyl group by decomposition. CONSTITUTION:This printing master plate for electrophotographic engraving is formed by forming the phtoconductive layer contg. a photoconductive compd. and binder resin on a conductive base, subjecting the photoconductive layer to image exposing, and forming a toner image thereon, then removing the photoconductive layer of non-image parts except the toner image part thereby forming the printing plate. The functional groups incorporated into the polymer contained in the binder resin of the photoconductive layer of such printing master plate form at least one hydroxyl group and at least one carboxyl group by decomposition. The printing master plate for electrophotographic engraving which has good sensitivity and is high in response speed is obtd. in this way. |
