公开(公告)号：US06362899B1

公开(公告)日：2002-03-26

申请号：US09055518

申请日：1998-04-06

申请人： David L. Flannery ,  Thomas P. Staub ,  David R. Seitz

发明人： David L. Flannery ,  Thomas P. Staub ,  David R. Seitz

IPC分类号： B41C1045

CPC分类号： B41C1/04 ,  B41C1/045 ,  B44B3/009 ,  B44B3/061 ,  G05B19/401 ,  G05B2219/33078 ,  G05B2219/37358 ,  G05B2219/37572 ,  G05B2219/37574 ,  G05B2219/45163 ,  G05B2219/45178 ,  G05B2219/45212 ,  G05B2219/49235 ,  G05B2219/50057 ,  H04N1/00002 ,  H04N1/00031 ,  H04N1/00063 ,  H04N1/00082 ,  H04N1/06 ,  H04N1/0671 ,  H04N1/19 ,  H04N1/4005

摘要： An error detection apparatus and method for use with engravers, such as gravure engravers. An error value E corresponding to the difference between a set of predetermined setup parameters and actual measurement of a portion of an engraved area on the cylinder is determined. The error value E is then used to adjust the engraver to engrave an actual cut or etch in accordance with the set of predetermined setup parameters. The error detection and correction system is suitable for providing a closed-loop system for engraving a cylinder. The apparatus and method may be used during initial setup or during normal operation of the engraver. A method is disclosed comprising the steps of engraving ink receptive cells in the surface of a rotating gravure printing cylinder consisting of the steps of generating a cell width command signal comprising a series of cell width commands, engraving the cells by using the cell width command signal to urge an engraving stylus into periodic engraving contact with the surface, measuring actual widths of cells which have been engraved as aforesaid, and adjusting the cell width command signal in correspondence with differences between the actual widths and the cell width commands.

摘要翻译： 一种与雕刻机一起使用的误差检测装置和方法，例如凹版印刷机。 确定对应于一组预定设置参数与圆筒上雕刻区域的一部分的实际测量之间的差异的误差值E. 然后使用误差值E来调整雕刻器以根据预定的设置参数的集合雕刻实际的切割或蚀刻。 错误检测和校正系统适用于提供用于雕刻圆柱体的闭环系统。 该装置和方法可以在初始设置期间或在雕刻机的正常操作期间使用。 公开了一种方法，其包括以下步骤：在旋转凹版印刷滚筒的表面中雕刻墨接收单元，所述步骤包括以下步骤：产生包括一系列单元宽度命令的单元宽度命令信号，通过使用单元宽度命令信号来雕刻单元 推动雕刻笔与表面定期雕刻接触，测量如上所述雕刻的单元格的实际宽度，以及根据实际宽度和单元宽度命令之间的差异来调整单元格宽度指令信号。

公开(公告)号：US06348979B1

公开(公告)日：2002-02-19

申请号：US09083816

申请日：1998-05-22

申请人： David Flannery ,  David R. Seitz ,  Thomas P. Staub ,  Matthew A. Thomas

发明人： David Flannery ,  David R. Seitz ,  Thomas P. Staub ,  Matthew A. Thomas

IPC分类号： B41C104

CPC分类号： B41C1/02 ,  B41C1/04 ,  B41C1/045 ,  B44B3/009 ,  B44B3/061 ,  G01B11/024 ,  G05B19/401 ,  G05B2219/33078 ,  G05B2219/37358 ,  G05B2219/37572 ,  G05B2219/37574 ,  G05B2219/45163 ,  G05B2219/45178 ,  G05B2219/45212 ,  G05B2219/49235 ,  G05B2219/50057 ,  H04N1/06 ,  H04N1/0671 ,  H04N1/19 ,  H04N1/4005

摘要： An error detection apparatus and method for use with engravers, such as gravure engravers. An error value E corresponding to the difference between a set of predetermined setup parameters and actual measurement of a portion of an engraved area on the cylinder is determined. The error value E is then used to adjust the engraver to engrave an actual cut or etch in accordance with the set of predetermined setup parameters. Advantageously, an error detection and correction system is suitable for providing a closed-loop system for engraving a cylinder. The apparatus and method may be used during initial setup or during normal operation of the engraver. Other features include an autofocus routine to facilitate the auto-focus procedure. Also, image processing is further enhanced by gap filling, discontinuity removal, and light calibration methods which may be used alone, in combination with each other, or in combination with the automatic focus system and/or automatic shoe system. Other embodiments of the invention illustrate the use of a polarizing element to polarize reflected light, as well as light directed to a surface of the cylinder prior to reflection, and the use of a light emitting diode (LED) for illuminating the surface of the cylinder. The features of the improved optic system facilitate reducing or eliminating image noise, such as glare, “blooming”, inconsistent illumination, and enhances the quality of the image captured by a CCD array associated with the camera used in the imager or imaging system.

摘要翻译： 一种与雕刻机一起使用的误差检测装置和方法，例如凹版印刷机。 确定对应于一组预定设置参数与圆筒上雕刻区域的一部分的实际测量之间的差异的误差值E. 然后使用误差值E来调整雕刻器以根据预定的设置参数的集合雕刻实际的切割或蚀刻。 有利地，错误检测和校正系统适于提供用于雕刻圆柱体的闭环系统。 该装置和方法可以在初始设置期间或在雕刻机的正常操作期间使用。 其他功能包括自动聚焦程序，以方便自动对焦程序。 此外，通过间隙填充，不连续性去除以及可以单独使用，彼此组合使用或与自动聚焦系统和/或自动鞋系统组合使用的光校准方法进一步增强图像处理。 本发明的其它实施例示出了偏振元件在反射之前偏振反射光以及指向气缸表面的光的使用，以及使用用于照亮气缸表面的发光二极管（LED） 。 改进的光学系统的特征有助于减少或消除图像噪声，例如眩光，“开花”，不一致的照明，并且增强由与成像器或成像系统中使用的相机相关联的CCD阵列捕获的图像的质量。