| 摘要 |
In a photocopying apparatus an electrostatic latent image is optically created on a precharged photoconductor 13 and transferred to a dielectric member 25 where it is developed with toner particles and the toner image is transferred to plain paper 35. A semiconductor substrate 15 is preferably included in the photoconductor member 11. In a printing apparatus, an electrostatic image is formed on an imaging roller by an ion generator comprising two electrodes separated by a solid dielectric, with a high frequency alternating potential used to create an air gap breakdown in a region at a junction of one of the electrodes and the solid dielectric. A direct current extraction potential applied to the junction electrode is used to extract ions from the discharge thus created. The ion generator and extractor may also be used in photocopier and other applications. The image bearing dielectric member 25 advantageously consists of impregnated anodized aluminium oxide, with high resistivity, and good hardness and smoothness to ensure essentially total transfer of the toned image to a receptor medium. This transfer may be effected with simultaneous image fixing by passing the receptor between the image roller and a backup roller under high pressure. <IMAGE> |
