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1. 发明申请

US20080025739A1 Environmental controls for operation of an electrostatographic developer unit having multiple magnetic brush rolls 有权
标题翻译：用于操作具有多个磁刷辊的静电显影单元的环境控制
公开(公告)号：US20080025739A1
公开(公告)日：2008-01-31
申请号：US11496646
申请日：2006-07-31
申请人： Ajay Kumar , Hirotsugu Oba , Keith Allan Nau , David Antwone Reed , Cory Joseph Winters , Michael Donald Thompson , Allen T. Retzlaff , Jennifer Rea Wagner , Paul W. Morehouse , Rasin Moser , Song Feng Mo , Rachael L. McGrath , John Franklyn Knapp
发明人： Ajay Kumar , Hirotsugu Oba , Keith Allan Nau , David Antwone Reed , Cory Joseph Winters , Michael Donald Thompson , Allen T. Retzlaff , Jennifer Rea Wagner , Paul W. Morehouse , Rasin Moser , Song Feng Mo , Rachael L. McGrath , John Franklyn Knapp
IPC分类号： G03G15/00 , G03G15/06 , G03G15/09
CPC分类号： G03G15/09 , G03G15/0848
摘要： A development station in an electrostatographic imaging machine may be controlled to improve toner halftone dot development over a wide range of environmental conditions. The development station includes a developer housing for retaining a quantity of developer having semi-conductive carrier particles and toner particles, a first magnetic roll having a stationary core with at least one magnet and a sleeve having longitudinal grooves that rotates about the stationary core of the first magnetic roll to present developer on one side of the first magnetic roll to the photoreceptor, a second magnetic roll having a stationary core with at least one magnet and a sleeve having longitudinal grooves that rotates about the stationary core of the second magnetic roll to receive developer from the first magnetic roll and present developer on one side of the second magnetic roll to the photoreceptor, the second magnetic roll being vertically displaced from the first magnetic roll so that a gap exists between the first and the second magnetic rolls, an environmental sensor for generating an environmental condition signal, a variable voltage supply coupled to the first magnetic roll and the second magnetic roll, and a control circuit for adjusting an output level for the variable voltage supply in response to the environmental condition signal.
摘要翻译：可以控制静电成像机中的显影台，以在宽范围的环境条件下改善调色剂半色调点显影。显影台包括用于保持一定量的具有半导体载体颗粒和调色剂颗粒的显影剂的显影剂外壳，具有至少一个磁体的固定磁芯的第一磁性辊和具有围绕静电磁芯旋转的纵向凹槽的套筒第一磁性辊将第一磁性辊的一侧上的显影剂显影到感光体，第二磁性辊，具有至少一个磁体的固定磁芯和具有围绕第二磁性辊的固定磁芯旋转的纵向槽的套筒，显影剂从第一磁性辊和第二磁性辊的一侧上的显影剂提供给感光体，第二磁性辊从第一磁性辊垂直移位，使得在第一和第二磁性辊之间存在间隙，环境传感器用于产生环境条件信号，耦合到第一个的可变电压电源磁辊和第二磁辊;以及控制电路，用于响应于环境条件信号调节可变电压电源的输出电平。

2. 发明授权

US07016073B1 Digital halftone with auxiliary pixels 失效
标题翻译：带辅助像素的数字半色调
公开(公告)号：US07016073B1
公开(公告)日：2006-03-21
申请号：US09362022
申请日：1999-07-27
申请人： Robert J. Meyer , Allen T. Retzlaff, Jr.
发明人： Robert J. Meyer , Allen T. Retzlaff, Jr.
IPC分类号： H04N1/405 , H04N1/407 , H04N1/29
CPC分类号： H04N1/4092 , G03G15/0803 , H04N1/4055
摘要： Utilization of non-printing high-spatial-frequency auxiliary pixels are introduced into the bitmap of halftones utilized in an image to obtain local control of the image development by modification of local average voltage in the development nip. These auxiliary pixels embody frequencies or levels of charge that are past the threshold for printing on the Modulation Transfer Function (MTF) curve, and therefore by themselves result in no toner deposition on the resultant page. These auxiliary pixels will however, position the toner cloud by modulating it and compensate for cleaning field and toner supply effects. This will better position the toner cloud to ensure adequate toner supply to all parts of the image so that the desired printing pixels will print as intended and provide a more faithful rendering of grayscale information in the image.
摘要翻译：将非印刷高空间频率辅助像素的利用率引入到图像中使用的半色调位图中，以通过修改显影压区中的局部平均电压来获得对图像显影的局部控制。这些辅助像素体现了超过调制传递函数（MTF）曲线打印阈值的电荷频率或电平，因此本身不会导致结果页面上没有调色剂沉积。然而，这些辅助像素将通过调制它来定位调色剂云，并补偿清洁区域和调色剂供应效应。这将更好地定位调色剂云以确保图像的所有部分的足够的碳粉供应，使得期望的打印像素将按预期打印并且在图像中更加忠实地呈现灰度信息。

3. 发明授权

US06919973B1 Auxiliary pixel patterns for improving print quality 失效
标题翻译：用于提高打印质量的辅助像素图案
公开(公告)号：US06919973B1
公开(公告)日：2005-07-19
申请号：US09362021
申请日：1999-07-27
申请人： Robert J. Meyer , Allen T. Retzlaff, Jr.
发明人： Robert J. Meyer , Allen T. Retzlaff, Jr.
IPC分类号： B41J2/505 , G03G15/08 , G06T5/00 , H04N1/409 , H04N1/58
CPC分类号： H04N1/4092 , B41J2/5058 , G03G15/0803
摘要： Utilization of non-printing high-spatial-frequency auxiliary pixels are introduced into the bitmap of an image to obtain local control of the image development by modification of local average voltage in the development nip. These auxiliary pixels embody frequencies or levels of charge that are past the threshold for printing on the Modulation Transfer Function (MTF) curve, and therefore by themselves result in no toner deposition on the resultant page. These auxiliary pixels will however, position the toner cloud by modulating it and to compensate for cleaning field and toner supply effects. This will better position the toner cloud to ensure adequate toner supply to all parts of the image so that the desired printing pixels will print as intended.
摘要翻译：将非印刷高空间频率辅助像素的利用率引入到图像的位图中，以通过修改显影压区中的局部平均电压来获得图像显影的局部控制。这些辅助像素体现了超过调制传递函数（MTF）曲线打印阈值的电荷频率或电平，因此本身不会导致结果页面上没有调色剂沉积。然而，这些辅助像素将通过调制它来定位调色剂云并补偿清洁场和调色剂供应效应。这将更好地定位墨粉云，以确保图像的所有部分都有足够的墨粉供应，以便所需的打印像素按预期打印。

4. 发明授权

US06970258B1 Non-printing patterns for improving font print quality 失效
标题翻译：用于改善字体打印质量的非打印模式
公开(公告)号：US06970258B1
公开(公告)日：2005-11-29
申请号：US09362020
申请日：1999-07-27
申请人： Robert J. Meyer , Allen T. Retzlaff, Jr.
发明人： Robert J. Meyer , Allen T. Retzlaff, Jr.
IPC分类号： G06F15/00 , G06K15/02
CPC分类号： G06K15/12 , G06K15/1831
摘要： Utilization of non-printing high-spatial-frequency auxiliary pixels are introduced into the bitmap of a font to obtain local control of the text image development by modification of local average voltage in the development nip. These auxiliary pixels embody frequencies or levels of charge that are past the threshold for printing on the Modulation Transfer Function (MTF) curve, and therefore by themselves result in no toner deposition on the resultant page. These auxiliary pixels will however, position the toner cloud by modulating it and compensate for cleaning field and toner supply effects. This will better position the toner cloud to ensure adequate toner supply to all parts of the font so that the desired printing pixels will print as intended.
摘要翻译：将非打印高空间频率辅助像素的利用率引入到字体的位图中，以通过修改开发压区中的局部平均电压来获得文本图像显影的局部控制。这些辅助像素体现了超过调制传递函数（MTF）曲线打印阈值的电荷频率或电平，因此本身不会导致结果页面上没有调色剂沉积。然而，这些辅助像素将通过调制它来定位调色剂云，并补偿清洁区域和调色剂供应效应。这将更好地定位墨粉云，以确保足够的墨粉供应到字体的所有部分，以便所需的打印像素按预期打印。

5. 发明授权

US07532830B2 Environmental controls for operation of an electrostatographic developer unit having multiple magnetic brush rolls 有权
标题翻译：用于操作具有多个磁刷辊的静电显影单元的环境控制
公开(公告)号：US07532830B2
公开(公告)日：2009-05-12
申请号：US11496646
申请日：2006-07-31
申请人： Ajay Kumar , Hirotsugu Oba , Keith Allan Nau , David Antwone Reed , Cory Joseph Winters , Michael Donald Thompson , Allen T. Retzlaff , Jennifer Rea Wagner , Paul W. Morehouse, Jr. , Rasin Moser , Song Feng Mo , Rachael L. McGrath , John Franklyn Knapp
发明人： Ajay Kumar , Hirotsugu Oba , Keith Allan Nau , David Antwone Reed , Cory Joseph Winters , Michael Donald Thompson , Allen T. Retzlaff , Jennifer Rea Wagner , Paul W. Morehouse, Jr. , Rasin Moser , Song Feng Mo , Rachael L. McGrath , John Franklyn Knapp
IPC分类号： G03G15/09
CPC分类号： G03G15/09 , G03G15/0848
摘要： A development station that improves toner halftone dot development over a wide range of environmental conditions includes a developer housing for retaining semi-conductive carrier particles and toner particles, a first magnetic roll having a stationary core with at least one magnet and a sleeve having longitudinal grooves that rotates about the stationary core of the first magnetic roll, a second magnetic roll having a stationary core with at least one magnet and a sleeve having longitudinal grooves that rotates about the stationary core of the second magnetic roll, an environmental sensor for generating an environmental condition signal, a variable voltage supply coupled to the first magnetic roll and the second magnetic roll, and a control circuit for adjusting an output level for the variable voltage supply.
摘要翻译：在宽范围的环境条件下改善调色剂半色调点显影的显影台包括用于保持半导体载体颗粒和调色剂颗粒的显影剂外壳，具有至少一个磁体的固定磁芯的第一磁性辊和具有纵向槽其围绕第一磁性辊的固定铁心旋转，第二磁性辊具有具有至少一个磁体的固定铁芯和具有围绕第二磁性辊的固定铁心旋转的纵向槽的套筒，用于产生环境的环境传感器条件信号，耦合到第一磁辊和第二磁辊的可变电压源，以及用于调节可变电压源的输出电平的控制电路。

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