| 摘要 |
PURPOSE:To obtain a recording image having high resolution for a prolonged term by smoothly fluidizing a developer between a recording electrode and a counter electrode without compaction and preventing the fusion of the developer to the electrodes. CONSTITUTION:The surface layer 29b of a cylindrical electrode 29 is formed of an elastic material having surface hardness of 30 deg.-90 deg. (a JIS spring type measuring method) and a volume electric resistance value of 10<6>-10<11>(OMEGA.cm), a recording electrode, in which a slit is formed at the front end of a recording electrode sheet 17 faced oppositely to the cylindrical electrode 18, is formed, and the recording electrode is constituted so as to be held by a cushion member 28b. According to the constitution, even when a magnetic toner (d) intends to be consolidated between the electrodes by the swing of the cylindrical electrode 29 and the irregularities of the recording electrode, the recording electrode corresponding to the position of the consolidation is rocked, the cushion member 28b is deflected, the surface section 29b of the cylindrical electrode 29 is indented flexibly, and an interelectrode distance L between the recording electrode and the cylindrical electrode 29 is kept constant. |
