发明授权
US07801472B2 Device and method for printing on both faces of a recording medium, comprising a charge shifting and recharging device
失效
一种用于在记录介质的两个面上进行印刷的装置和方法，包括电荷转移和再充电装置
- 专利标题： Device and method for printing on both faces of a recording medium, comprising a charge shifting and recharging device
- 专利标题（中）： 一种用于在记录介质的两个面上进行印刷的装置和方法，包括电荷转移和再充电装置
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申请号： US11913209申请日： 2006-03-23
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公开(公告)号： US07801472B2公开(公告)日： 2010-09-21
- 发明人: Alexander Kreiter , Stefan Scherdel , Karl Zappe , Manfred Viechter
- 申请人： Alexander Kreiter , Stefan Scherdel , Karl Zappe , Manfred Viechter
- 申请人地址： DE Poing
- 专利权人： Oce Printing Systems GmbH
- 当前专利权人： Oce Printing Systems GmbH
- 当前专利权人地址： DE Poing
- 代理机构： Schiff Hardin LLP
- 优先权： DE102005023462 20050520
- 国际申请： PCT/EP2006/061008 WO 20060323
- 国际公布： WO2006/122847 WO 20061123
- 主分类号： G03G15/20
- IPC分类号： G03G15/20
摘要：
In a method or device for simultaneous double-sided printing of a recording medium, the first toner image having toner charged with a first polarity is generated on a first transfer belt and a second toner image having toner also charged with the first polarity is generated on a second transfer belt. A charge shifting device is provided along with a recharging device. At least one of the charge shifting device and the recharging device has a corotron. With the charge shifting device, the charge of the first toner image is shifted to a second polarity opposite to the first polarity and with the recharging device the second toner image with the first polarity is recharged. The recording medium is passed between the first and the second transfer belts. An electrical field is generated at a transfer printing region via which the first toner image shifted to the second polarity and the recharged second toner image are separated from the respective first or second transfer belt and are transferred to a side of the recording medium facing the respective transfer belt.