发明授权
US4218691A Recording apparatus with improved counter electrode 失效
具有改进的对电极的记录装置

  • 专利标题: Recording apparatus with improved counter electrode
  • 专利标题(中): 具有改进的对电极的记录装置
  • 申请号: US937162
    申请日: 1978-08-28
  • 公开(公告)号: US4218691A
    公开(公告)日: 1980-08-19
  • 发明人: Tadashi Fujii
  • 申请人: Tadashi Fujii
  • 申请人地址: JPX Tokyo
  • 专利权人: Ricoh Company, Ltd.
  • 当前专利权人: Ricoh Company, Ltd.
  • 当前专利权人地址: JPX Tokyo
  • 优先权: JPX52-104053 19770830; JPX52-115760 19770927; JPX52-145464 19771203
  • 主分类号: G03G15/09
  • IPC分类号: G03G15/09 G03G15/34 G03G15/08
Recording apparatus with improved counter electrode
摘要:
The recording apparatus of a type adopting a non-impact recording method comprises a recording electrode and a toner-bearing counter electrode, which are disposed with a predetermined gap therebetween, and recording is performed on a recording sheet, while the sheet is passed through the gap or recording portion, by the toner being attracted from the counter electrode to the recording sheet in accordance with a signal applied to the counter electrode from the recording electrode. On the surface of the counter electrode, in accordance with the invention there are formed an electrically conductive and ferromagnetic base portion and a number of non-conductive and non-magnetic convexities. The toner is deposited only on the base portion by suitable supply and scraper means, without exceeding the height of the convexities. Furthermore, a quenching charger for quenching charges held on the convexities is disclosed and the magnetic poles of each magnet disposed inside the counter electrode are directed so as to avoid the recording portion.
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