发明授权
- 专利标题: Preconditioning media sheets to reduce transfer voltage
- 专利标题(中): 预处理介质片以降低转印电压
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申请号: US11692286申请日: 2007-03-28
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公开(公告)号: US07639979B2公开(公告)日: 2009-12-29
- 发明人: Niko Jay Murrell , Robert Reed Booth , Larry Steven Foster , Brian P. Weaver
- 申请人: Niko Jay Murrell , Robert Reed Booth , Larry Steven Foster , Brian P. Weaver
- 申请人地址: US KY Lexington
- 专利权人: Lexmark International, Inc.
- 当前专利权人: Lexmark International, Inc.
- 当前专利权人地址: US KY Lexington
- 主分类号: G03G15/16
- IPC分类号: G03G15/16
摘要:
Image transfer quality in an electrophotographic image forming device is improved by preconditioning a media sheet prior to transferring a toner image thereto at an image transfer station. The media sheet is preconditioned by applying a static charge to it. In a color DTM type device, the charge reduces the transfer voltages required at downstream image transfer stations to account for charge accumulated on the media sheet as a result of the image transfer process at upstream image transfer stations. The charge may be applied to the media sheet at a media sheet preconditioning element positioned upstream of an image transfer station. Alternatively, an initial charge may be applied to the media sheet at an image transfer station, without transferring a toner image to the sheet, and returning the sheet via a duplex path to positioned upstream of an image transfer station prior to an image transfer operation.
公开/授权文献
- US20080240761A1 Preconditioning Media Sheets To Reduce Transfer Voltage 公开/授权日:2008-10-02
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