公开(公告)号：US09327526B2

公开(公告)日：2016-05-03

申请号：US13912860

申请日：2013-06-07

Applicant: Xerox Corporation

Inventor： Gerald M. Fletcher ,  Johannes N. M. de Jong ,  Peter Knausdorf ,  Steven R. Moore ,  Ramesh S. Palghat

IPC: B41J13/00 ,  B41J11/06 ,  B41J11/00

CPC classification number: B41J13/0009 ,  B41J11/007 ,  B41J11/06

Abstract: Embodiments described herein are directed to a system for reducing electrostatic fields underneath print heads in a direct marking printing system. The system includes: one or more print heads for depositing ink onto a media substrate; a media transport for moving the media substrate along a media path past the one or more print heads; a conductive platen contacting the media transport belt; an electrostatic field reducer that includes an alternating current charge device positioned upstream of the one or more print heads; and one or apertures with electrically isolated biased electrodes separated by an opening that is in registration with the ink deposition areas of the one or more print heads. The media transport includes a media transport belt and, when the media is on the transport belt it has an electrostatic field, which can cause printing defects. The electrostatic field reducer and electrodes reduce the electrostatic field on the surface of the media and thereby reduce printing defects.

Abstract translation: 本文描述的实施例涉及用于在直接标记打印系统中减少打印头下方的静电场的系统。 该系统包括：用于将墨水沉积到介质基板上的一个或多个打印头; 用于沿着介质路径移动介质基板通过所述一个或多个打印头的介质传送器; 与介质输送带接触的导电台板; 静电场减速器，其包括位于所述一个或多个打印头的上游的交流电荷装置; 以及具有电隔离的偏置电极的一个或多个孔，其通过与一个或多个打印头的油墨沉积区域对准的开口分开。 介质输送器包括介质输送带，并且当介质在输送带上时，其具有静电场，这可能导致印刷缺陷。 静电场减速器和电极减少介质表面的静电场，从而减少打印缺陷。

公开(公告)号：US08947482B2

公开(公告)日：2015-02-03

申请号：US13837263

申请日：2013-03-15

Applicant: Xerox Corporation

Inventor： Palghat S. Ramesh ,  Joannes N. M. de Jong ,  Gerald M. Fletcher

IPC: B41J2/325 ,  B41J11/00 ,  G01D15/10 ,  B41J11/06

CPC classification number: B41J11/06 ,  B41J11/007

Abstract: Embodiments described herein are directed to a system for reducing electrostatic fields underneath print heads in a direct marking printing system. The system includes: one or more print heads for depositing ink onto a media substrate; a media transport for moving the media substrate along a media path past the one or more print heads; a conductive platen contacting the media transport belt; an electrostatic field reducer that includes an alternating current charge device positioned upstream of the one or more print heads; and one or electrically isolated biased electrodes in registration with the ink deposition areas of the one or more print heads. The media transport includes a media transport belt and, when the media is on the transport belt it has an electrostatic field, which can cause printing defects. The electrostatic field reducer and electrodes reduce the electrostatic field on the surface of the media and thereby reduce printing defects.

Abstract translation: 本文描述的实施例涉及用于在直接标记打印系统中减少打印头下方的静电场的系统。 该系统包括：用于将墨水沉积到介质基板上的一个或多个打印头; 用于沿着介质路径移动介质基板通过所述一个或多个打印头的介质传送器; 与介质输送带接触的导电台板; 静电场减速器，其包括位于所述一个或多个打印头的上游的交流电荷装置; 以及与一个或多个打印头的墨水沉积区域对准的一个或电隔离的偏置电极。 介质输送器包括介质输送带，并且当介质在输送带上时，其具有静电场，这可能导致印刷缺陷。 静电场减速器和电极减少介质表面的静电场，从而减少打印缺陷。

公开(公告)号：US20140125748A1

公开(公告)日：2014-05-08

申请号：US13669578

申请日：2012-11-06

Applicant: XEROX CORPORATION

Inventor： Gerald M. Fletcher ,  Joannes N. M. de Jong ,  Peter J. Knausdorf

IPC: B41J2/01

CPC classification number: B41J11/007

Abstract: When tacking print media to a print media transport belt in a printer, a tack module having a pair of nips is employed to control charge migration in across the print media in order to tolerate lead edge curl while ensuring uniform printing. An upstream nip is formed by a first bias transfer roll and a first backup roll, and a downstream nip is formed by a second bias transfer roll and a second backup roll. The respective backup rolls are offset slightly upstream of the respective bias transfer rolls. Charge of opposite polarities is applied to the first backup roll and the second bias transfer roll to facilitate taking of the print media to the print media transport belt.

Abstract translation: 当将打印介质固定到打印机中的打印介质传送带时，采用具有一对胶印的定位模块来控制打印介质中的电荷迁移，以便在确保均匀打印的同时容忍前缘卷曲。 上游压区由第一偏压传送辊和第一支承辊形成，下游辊隙由第二偏压传送辊和第二支承辊形成。 相应的支撑辊在相应偏置传送辊的稍微上游偏移。 相反极性的电荷施加到第一支承辊和第二偏压传送辊，以便于将打印介质带到打印介质传送带。

公开(公告)号：US08998403B2

公开(公告)日：2015-04-07

申请号：US13669578

申请日：2012-11-06

Applicant: Xerox Corporation

Inventor： Gerald M. Fletcher ,  Joannes N. M. de Jong ,  Peter J. Knausdorf

IPC: B41J2/01 ,  B41J11/00

CPC classification number: B41J11/007

Abstract: When tacking print media to a print media transport belt in a printer, a tack module having a pair of nips is employed to control charge migration in across the print media in order to tolerate lead edge curl while ensuring uniform printing. An upstream nip is formed by a first bias transfer roll and a first backup roll, and a downstream nip is formed by a second bias transfer roll and a second backup roll. The respective backup rolls are offset slightly upstream of the respective bias transfer rolls. Charge of opposite polarities is applied to the first backup roll and the second bias transfer roll to facilitate taking of the print media to the print media transport belt.

Abstract translation: 当将打印介质固定到打印机中的打印介质传送带时，采用具有一对胶印的定位模块来控制打印介质中的电荷迁移，以便在确保均匀打印的同时容忍前缘卷曲。 上游压区由第一偏压传送辊和第一支承辊形成，下游辊隙由第二偏压传送辊和第二支承辊形成。 相应的支撑辊在相应偏置传送辊的稍微上游偏移。 相反极性的电荷施加到第一支承辊和第二偏压传送辊，以便于将打印介质带到打印介质传送带。

公开(公告)号：US09132673B2

公开(公告)日：2015-09-15

申请号：US13727841

申请日：2012-12-27

Applicant: Xerox Corporation

Inventor： Gerald M. Fletcher ,  Palghat S. Ramesh ,  Peter J. Knausdorf ,  Joannes N.M. de Jong

IPC: B41J13/08 ,  B41J11/00 ,  B65H5/00 ,  B65H5/02

CPC classification number: B41J13/08 ,  B41J11/007 ,  B65H5/004 ,  B65H5/021 ,  B65H2404/2221 ,  B65H2404/533

Abstract: A semi-conductive media transport is used with an ink jet printing system. A belt is held flat and slides across a conductive platen, causing electrostatic charges on the belt. The belt is made semi-conductive to prevent charge buildup. The belt has an effective surface resistivity between a lower limit to preclude a buildup of electrostatic charges, and an upper limit to enable electrostatic tacking of the media to the belt. The resistivity limits vary depending upon belt velocity, thickness, material, belt and media dielectric constant, and slot width. A pair of charged nip rollers tacks the media substrate to the belt. An AC corotron is disposed above the belt to establish a net neutral charge state on the media substrate and the belt. Platen slots directly below the ink jet print heads will maintain the net neutral charge state on the media substrate and the belt.

Abstract translation: 半导体介质传输与喷墨打印系统一起使用。 皮带被平放并滑过导电台板，导致皮带上的静电。 带子制成半导体以防止电荷积聚。 该带在下限之间具有有效的表面电阻率，以防止静电荷的积聚，以及允许介质静电固定到带上的上限。 电阻率界限根据皮带速度，厚度，材料，皮带和介质介质常数以及槽宽度而变化。 一对充电夹辊将介质基板粘贴到带上。 交流电晕管设置在带上方，以在介质基板和带上建立净中性充电状态。 喷墨打印头正下方的压纸槽将保持介质基材和皮带上的净中性充电状态。

公开(公告)号：US20140267501A1

公开(公告)日：2014-09-18

申请号：US13837263

申请日：2013-03-15

Applicant: XEROX CORPORATION

Inventor： Palghat S. Ramesh ,  Joannes N. M. de Jong ,  Gerald M. Fletcher

IPC: B41J2/14

CPC classification number: B41J11/06 ,  B41J11/007

Abstract: Embodiments described herein are directed to a system for reducing electrostatic fields underneath print heads in a direct marking printing system. The system includes: one or more print heads for depositing ink onto a media substrate; a media transport for moving the media substrate along a media path past the one or more print heads; a conductive platen contacting the media transport belt; an electrostatic field reducer that includes an alternating current charge device positioned upstream of the one or more print heads; and one or electrically isolated biased electrodes in registration with the ink deposition areas of the one or more print heads. The media transport includes a media transport belt and, when the media is on the transport belt it has an electrostatic field, which can cause printing defects. The electrostatic field reducer and electrodes reduce the electrostatic field on the surface of the media and thereby reduce printing defects.

Abstract translation: 本文描述的实施例涉及用于在直接标记打印系统中减少打印头下方的静电场的系统。 该系统包括：用于将墨水沉积到介质基板上的一个或多个打印头; 用于沿着介质路径移动介质基板通过所述一个或多个打印头的介质传送器; 与介质输送带接触的导电台板; 静电场减速器，其包括位于所述一个或多个打印头的上游的交流电荷装置; 以及与一个或多个打印头的墨水沉积区域对准的一个或电隔离的偏置电极。 介质输送器包括介质输送带，并且当介质在输送带上时，其具有静电场，这可能导致印刷缺陷。 静电场减速器和电极减少介质表面的静电场，从而减少打印缺陷。

公开(公告)号：US20140184712A1

公开(公告)日：2014-07-03

申请号：US13727841

申请日：2012-12-27

Applicant: XEROX CORPORATION

Inventor： Gerald M. Fletcher ,  Palghat S. Ramesh ,  Peter J. Knausdorf ,  Joannes N.M. de Jong

IPC: B41J11/00 ,  B65H3/18

CPC classification number: B41J13/08 ,  B41J11/007 ,  B65H5/004 ,  B65H5/021 ,  B65H2404/2221 ,  B65H2404/533

Abstract: A semi-conductive media transport is used with an ink jet printing system. A belt is held flat and slides across a conductive platen, causing electrostatic charges on the belt. The belt is made semi-conductive to prevent charge buildup. The belt has an effective surface resistivity between a lower limit to preclude a buildup of electrostatic charges, and an upper limit to enable electrostatic tacking of the media to the belt. The resistivity limits vary depending upon belt velocity, thickness, material, belt and media dielectric constant, and slot width. A pair of charged nip rollers tacks the media substrate to the belt. An AC corotron is disposed above the belt to establish a net neutral charge state on the media substrate and the belt. Platen slots directly below the ink jet print heads will maintain the net neutral charge state on the media substrate and the belt.

Abstract translation: 半导体介质传输与喷墨打印系统一起使用。 皮带被平放并滑过导电台板，导致皮带上的静电。 带子制成半导体以防止电荷积聚。 该带在下限之间具有有效的表面电阻率，以防止静电荷的积聚，以及允许介质静电固定到带上的上限。 电阻率界限根据皮带速度，厚度，材料，皮带和介质介质常数以及槽宽度而变化。 一对充电夹辊将介质基板粘贴到带上。 交流电晕管设置在带上方，以在介质基板和带上建立净中性充电状态。 喷墨打印头正下方的压纸槽将保持介质基材和皮带上的净中性充电状态。

公开(公告)号：US20140028750A1

公开(公告)日：2014-01-30

申请号：US13912860

申请日：2013-06-07

Applicant: Xerox Corporation

Inventor： Gerald M. Fletcher ,  Johannes N. M. de Jong ,  Peter Knausdorf ,  Steven R. Moore ,  Ramesh S. Palghat

IPC: B41J13/00

CPC classification number: B41J13/0009 ,  B41J11/007 ,  B41J11/06

Abstract: Embodiments described herein are directed to a system for reducing electrostatic fields underneath print heads in a direct marking printing system. The system includes: one or more print heads for depositing ink onto a media substrate; a media transport for moving the media substrate along a media path past the one or more print heads; a conductive platen contacting the media transport belt; an electrostatic field reducer that includes an alternating current charge device positioned upstream of the one or more print heads; and one or apertures with electrically isolated biased electrodes separated by an opening that is in registration with the ink deposition areas of the one or more print heads. The media transport includes a media transport belt and, when the media is on the transport belt it has an electrostatic field, which can cause printing defects. The electrostatic field reducer and electrodes reduce the electrostatic field on the surface of the media and thereby reduce printing defects.

Abstract translation: 本文描述的实施例涉及用于在直接标记打印系统中减少打印头下方的静电场的系统。 该系统包括：用于将墨水沉积到介质基板上的一个或多个打印头; 用于沿着介质路径移动介质基板通过所述一个或多个打印头的介质传送器; 与介质输送带接触的导电台板; 静电场减速器，其包括位于所述一个或多个打印头的上游的交流电荷装置; 以及具有电隔离的偏置电极的一个或多个孔，其通过与一个或多个打印头的油墨沉积区域对准的开口分开。 介质输送器包括介质输送带，并且当介质在输送带上时，其具有静电场，这可能导致印刷缺陷。 静电场减速器和电极减少介质表面的静电场，从而减少打印缺陷。