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    • 76. 发明申请
    • Dithering unit for multi-segment printhead
    • 用于多段打印头的抖动单元
    • US20080111845A9
    • 2008-05-15
    • US10884881
    • 2004-07-06
    • Kia SilverbrookPaul LapstunSimon Walmsley
    • Kia SilverbrookPaul LapstunSimon Walmsley
    • B41J2/205
    • B41J2/2132H04N1/3871H04N1/405H04N1/4051
    • A dithering unit for a multi-segment printhead having a plurality of printhead segments that are positioned in a printhead to span a print area so that portions of consecutive printhead segments overlap in common print areas, with each printhead segment defining a lead-in area in one common print area and a lead-out area in a consecutive common print area, the dithering unit being configured to communicate with an interface to receive image data from the interface and a memory device to receive data relating to the characteristics of the multi-segment printhead, the dithering unit being configured to generate a set of dither matrices for each printhead segment so that each set has at least a lead-in dither matrix associated with the lead-in area and a lead-out dither matrix associated with the lead-out area, to generate lead-in/lead-out dither matrices for each common print area based on characteristics of the printhead segments of each common print area, to generate a variable probability value that is dependent on a scalar value that corresponds to a position along a line spanning each common print area and to interpolate the lead-in/lead-out dither matrices with the variable probability value to generate interpolated lead-in/lead-out dither matrices.
    • 一种用于多段打印头的抖动单元,其具有多个打印头段,所述多个打印头段位于打印头中以跨越打印区域,使得连续的打印头部分的部分在公共打印区域中重叠,每个打印头段定义了导入区域 一个公共打印区域和连续公共打印区域中的导出区域,所述抖动单元被配置为与界面通信以从所述界面接收图像数据;以及存储器装置,用于接收与所述多段的特征有关的数据 打印头,抖动单元被配置为为每个打印头段生成一组抖动矩阵,使得每个组具有至少一个与导入区相关联的导入抖动矩阵,以及与引出区相关联的导出抖动矩阵, 基于每个公共打印区域的打印头段的特性,为每个公共打印区域生成引入/导出抖动矩阵,以产生可变概率 依赖于与跨越每个公共打印区域的线对应的标量值的标量值,并且以可变概率值内插引入/导出抖动矩阵以产生内插导入/导出 抖动矩阵