| 摘要 |
PURPOSE:To obtain a developing characteristic and high quality picture corresponding to the kind of original picture, by arranging plural minutes float electrodes on the surface of the uppermost inductive layer of alternately laminated conductive layer and inductive layer to elasticize a toner carrier. CONSTITUTION:The inductive layers 3 and 5 and a conductive layer 4 made of an insulating material are formed on the outer peripheral surface of a conductive base body 2 and plural minute float electrodes 6 are scattered on the surface of the inductive layer 5 to form a toner carrier. When the carrier 1 having the toner 9 charged with a prescribed polarity by the friction with a layer thickness controlling member 10, is pressed against a photosensitive body 11 to press toner 9 with the photosensitive body 11 at the developing position by the elasticity of the inductive layers 3 and 5 and to improve the picture quality. Moreover, since electrode 6 of float condition is installed, the number of the line of electric force is increased against picture drawn with line L1 and an edge effect is exerted to increase the picture density. In addition to the above, it is possible to obtain a required developing characteristic in accordance with the picture quality of original by controlling the voltage to be impressed upon conductive layer 2 and 4. |
