| 摘要 |
<p>An electrode structure being in contact with a toner layer and composed of a flexible sheet to which a bias voltage is applied is provided on a developing roller prior to developing. This electrode structure uses the electrophoresis inside the toner layer caused by the application of a bias voltage-based electric field to divide the toner layer almost into a toner-rich layer and a carrier-rich layer. This electrode structure composed of a flexible sheet uses the surface tension or wetting force of a liquid developer between the sheet and a developing roller in contact therewith to pull the sheet toward the developing roller surface for contacting with the roller. Accordingly, the contact nip width of a bias blade is increased and a contact stability is ensured with respect to a developing roller provided with the bias blade.</p> |
