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    • 31. 发明授权
    • Image stitching for a multi-head printer
    • 多头打印机的图像拼接
    • US08345307B2
    • 2013-01-01
    • US13312650
    • 2011-12-06
    • Suhail S. SaquibWilliam T. Vetterling
    • Suhail S. SaquibWilliam T. Vetterling
    • G06K15/00G06F13/00
    • B41J2/5056B41J2/355H04N1/3876
    • Techniques are disclosed for stitching images printed by a multi-head printer in a manner that is relatively insensitive to misregistration of the image segments. When a pair of overlapping print heads print a pair of adjacent image segments which meet in a stitching region, printing at each location in the stitching region is accomplished by both print heads with a weighting that depends on the location being printed within the stitching region. In one embodiment, for example, the output of each print head is weighted by a linear function of horizontal pixel position. Techniques are also disclosed for selecting screening patterns for use when stitching is performed with variable-dot printers. Such screening patterns are selected to minimize variations in density that may arise as the result of cross-web and/or down-web misregistration.
    • 公开了以对于图像片段的不对准相对不敏感的方式拼接由多头打印机打印的图像的技术。 当一对重叠的打印头打印在拼接区域中相遇的一对相邻图像片段时,在缝合区域中的每个位置处的打印由两个打印头通过取决于打印在缝合区域内的位置的加权来实现。 在一个实施例中,例如,每个打印头的输出由水平像素位置的线性函数加权。 还公开了用于选择使用可变点打印机进行缝合时使用的筛选图案的技术。 选择这种筛选模式以最小化由于网幅和/或下卷筒不对准而可能产生的密度变化。
    • 32. 发明授权
    • Print head pulsing techniques for multicolor printers
    • 多色打印机的打印头脉冲技术
    • US08164609B2
    • 2012-04-24
    • US12940845
    • 2010-11-05
    • Chien LiuWilliam T. Vetterling
    • Chien LiuWilliam T. Vetterling
    • B41J2/35
    • B41J2/355B41J2/36
    • In one aspect of the invention there is disclosed a multicolor thermal imaging system wherein different heating elements on a thermal print head can print on different color-forming layers of a multicolor thermal imaging member in a single pass. The line-printing time is divided into portions, each of which is divided into a plurality of subintervals. All of the pulses within the portions have the same energy. In one embodiment, every pulse has the same amplitude and duration. Different colors are selected for printing during the different portions by varying the fraction of subintervals that contain pulses. This technique allows multiple colors to be printed using a thermal print head with a single strobe signal line. Pulsing patterns may be chosen to reduce the coincidence of pulses provided to multiple print head elements, thereby reducing the peak power requirements of the print head.
    • 在本发明的一个方面,公开了一种多色热成像系统,其中热打印头上的不同加热元件可以在单次通过中在多色热成像构件的不同成色层上印刷。 行打印时间被分为部分,每个部分被分成多个子区间。 部分内的所有脉冲具有相同的能量。 在一个实施例中,每个脉冲具有相同的幅度和持续时间。 通过改变包含脉冲的子区间的分数来选择在不同部分期间进行打印的不同颜色。 该技术允许使用具有单个选通信号线的热打印头来打印多种颜色。 可以选择脉冲图案以减少提供给多个打印头元件的脉冲的一致性,从而降低打印头的峰值功率要求。
    • 33. 发明申请
    • IMAGE STITCHING FOR A MULTI-HEAD PRINTER
    • 多头打印机的图像刺绣
    • US20120076412A1
    • 2012-03-29
    • US13312650
    • 2011-12-06
    • Suhail S. SAQUIBWilliam T. VETTERLING
    • Suhail S. SAQUIBWilliam T. VETTERLING
    • G06K9/34
    • B41J2/5056B41J2/355H04N1/3876
    • Techniques are disclosed for stitching images printed by a multi-head printer in a manner that is relatively insensitive to misregistration of the image segments. When a pair of overlapping print heads print a pair of adjacent image segments which meet in a stitching region, printing at each location in the stitching region is accomplished by both print heads with a weighting that depends on the location being printed within the stitching region. In one embodiment, for example, the output of each print head is weighted by a linear function of horizontal pixel position. Techniques are also disclosed for selecting screening patterns for use when stitching is performed with variable-dot printers. Such screening patterns are selected to minimize variations in density that may arise as the result of cross-web and/or down-web misregistration.
    • 公开了以对于图像片段的不对准相对不敏感的方式拼接由多头打印机打印的图像的技术。 当一对重叠的打印头打印在拼接区域中相遇的一对相邻图像片段时,在缝合区域中的每个位置处的打印由两个打印头通过取决于打印在缝合区域内的位置的加权来实现。 在一个实施例中,例如,每个打印头的输出由水平像素位置的线性函数加权。 还公开了用于选择使用可变点打印机进行缝合时使用的筛选图案的技术。 选择这种筛选模式以最小化由于网幅和/或下卷筒不对准而可能产生的密度变化。
    • 36. 发明授权
    • Print head pulsing techniques for multicolor printers
    • 多色打印机的打印头脉冲技术
    • US07830405B2
    • 2010-11-09
    • US11159880
    • 2005-06-23
    • Chien LiuWillilam T. Vetterling
    • Chien LiuWillilam T. Vetterling
    • B41J2/35
    • B41J2/355B41J2/36
    • In one aspect of the invention there is disclosed a multicolor thermal imaging system wherein different heating elements on a thermal print head can print on different color-forming layers of a multicolor thermal imaging member in a single pass. The line-printing time is divided into portions, each of which is divided into a plurality of subintervals. All of the pulses within the portions have the same energy. In one embodiment, every pulse has the same amplitude and duration. Different colors are selected for printing during the different portions by varying the fraction of subintervals that contain pulses. This technique allows multiple colors to be printed using a thermal print head with a single strobe signal line. Pulsing patterns may be chosen to reduce the coincidence of pulses provided to multiple print head elements, thereby reducing the peak power requirements of the print head.
    • 在本发明的一个方面,公开了一种多色热成像系统,其中热打印头上的不同加热元件可以在单次通过中在多色热成像构件的不同成色层上印刷。 行打印时间被分为部分,每个部分被分成多个子区间。 部分内的所有脉冲具有相同的能量。 在一个实施例中,每个脉冲具有相同的幅度和持续时间。 通过改变包含脉冲的子区间的分数来选择在不同部分期间进行打印的不同颜色。 该技术允许使用具有单个选通信号线的热打印头来打印多种颜色。 可以选择脉冲图案以减少提供给多个打印头元件的脉冲的一致性,从而降低打印头的峰值功率要求。
    • 38. 发明授权
    • Image stitching for a multi-head printer
    • 多头打印机的图像拼接
    • US07808674B2
    • 2010-10-05
    • US12128507
    • 2008-05-28
    • Suhail S. SaquibWilliam T. Vetterling
    • Suhail S. SaquibWilliam T. Vetterling
    • G06F15/00H04N1/00
    • B41J2/5056B41J2/355H04N1/3876
    • Techniques are disclosed for stitching images printed by a multi-head printer in a manner that is relatively insensitive to misregistration of the image segments. When a pair of overlapping print heads print a pair of adjacent image segments which meet in a stitching region, printing at each location in the stitching region is accomplished by both print heads with a weighting that depends on the location being printed within the stitching region. In one embodiment, for example, the output of each print head is weighted by a linear function of horizontal pixel position. Techniques are also disclosed for selecting screening patterns for use when stitching is performed with variable-dot printers. Such screening patterns are selected to minimize variations in density that may arise as the result of cross-web and/or down-web misregistration.
    • 公开了以对于图像片段的不对准相对不敏感的方式拼接由多头打印机打印的图像的技术。 当一对重叠的打印头打印在拼接区域中相遇的一对相邻图像片段时,在缝合区域中的每个位置处的打印由两个打印头通过取决于打印在缝合区域内的位置的加权来实现。 在一个实施例中,例如,每个打印头的输出由水平像素位置的线性函数加权。 还公开了用于选择使用可变点打印机进行缝合时使用的筛选图案的技术。 选择这种筛选模式以最小化由于网幅和/或下卷筒不对准而可能产生的密度变化。