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    Printing of color ink under and over black text and graphics areas
    3.
    发明授权
    Printing of color ink under and over black text and graphics areas 有权
    在黑色文字和图形区域下方打印彩色墨水

    公开(公告)号：US06354693B1

    公开(公告)日：2002-03-12

    申请号：US09659666

    申请日：2000-09-11

    申请人： Steven D Looman ,  Mark H. Kowalski ,  George C Ross ,  Michel A. Riou ,  Paul David Gast ,  Brooke E Smith ,  Keshava A Prasad ,  Robert B McMaster

    发明人： Steven D Looman ,  Mark H. Kowalski ,  George C Ross ,  Michel A. Riou ,  Paul David Gast ,  Brooke E Smith ,  Keshava A Prasad ,  Robert B McMaster

    IPC分类号： B41J221

    CPC分类号： G06K15/102 ,  B41J19/147 ,  G06K2215/0094

    摘要： One or more reactive color inks are printed under and over black text and graphics areas. That is to say, one or more reactive color inks are first printed in a selected area in which black text and/or graphics are to be printed, then the black text and/or graphics are printed, and finally one or more reactive color inks are then printed over the black text and/or graphics. The use of under- and over-printing of black text and/or graphics by reactive color inks improves several important characteristics of inkjet printing. Specifically, the following improvements are obtained: dry-time, finger smudge, media independence/print quality, waterfastness, strikethrough, less noticeable missing/misdirected nozzles, and no dedicated pens are required. Alternatively, either underprinting alone or overprinting alone may be used.

    摘要翻译： 一个或多个反应性颜色墨水印刷在黑色文本和图形区域之下。 也就是说，首先将一个或多个反应性颜色墨水印刷到要打印黑色文本和/或图形的选定区域中，然后打印黑色文本和/或图形，最后打印一个或多个反应性颜色墨水 然后印在黑色文字和/或图形上。 通过反应性颜色油墨使用黑色文字和/或图形的欠印刷和超印刷改善了喷墨印刷的几个重要特性。 具体来说，可以获得以下改进：干燥时间，手指污迹，介质独立性/打印质量，耐水性，删除线，缺少/不正确的喷嘴，不需要专用笔。 或者，可以单独使用底印或单独的套印。

    Mixing overprinting and underprinting of inks in an inkjet printer to speed up the dry time of black ink without undesirable hue shifts
    4.
    发明授权
    Mixing overprinting and underprinting of inks in an inkjet printer to speed up the dry time of black ink without undesirable hue shifts 有权
    在喷墨打印机中混合墨水的套印和底印以加快黑色墨水的干燥时间，而不会有不希望的色调偏移

    公开(公告)号：US06244687B1

    公开(公告)日：2001-06-12

    申请号：US09273703

    申请日：1999-03-22

    申请人： Paul David Gast ,  Keshava A Prasad ,  Brooke E Smith ,  Michel A. Riou ,  Steven D Looman

    发明人： Paul David Gast ,  Keshava A Prasad ,  Brooke E Smith ,  Michel A. Riou ,  Steven D Looman

    IPC分类号： B41J221

    CPC分类号： G06K15/102 ,  B41J19/147 ,  G06K2215/0094

    摘要： A black printhead is installed in a scanning carriage with at least one primary color printhead on both sides of the black printhead. To reduce the drying time of a printed black ink pattern and to achieve other benefits, a first one of the primary color inks underprints the black ink in a first scan direction, and a second one of the primary color inks underprints the black ink in an opposite second scan direction. To minimize hue shifts due to the different underprinted colors, the black ink is overprinted, during the same scan that printed the underprinted ink and black ink, by a color ink that is different from the underprinted ink, so that the resulting black image printed in both scan directions will contain the same three color components. In one embodiment, the order of print cartridges in the scanning carriage, as viewed from the front of the printer, is cyan, black, magenta, and yellow. Other orders may also be used, and additional colors may be used. The invention is also applicable to a color printer using a single printhead with multiple sets of nozzles, each set printing a different color ink.

    摘要翻译： 黑色打印头安装在扫描托架中，黑色打印头两侧至少有一个主色打印头。 为了减少印刷黑色油墨图案的干燥时间并实现其它优点，第一种原色油墨在第一扫描方向上印刷黑色油墨，并且第二种原色油墨将黑色油墨以 相反的第二扫描方向。 为了最小化由于不同的印痕颜色造成的色相偏移，在通过与底印油墨不同的彩色油墨进行的相同的扫描期间，黑印刷被印刷在底印油墨和黑色油墨的同一扫描中，从而将所得到的黑色图像印在 两个扫描方向都将包含相同的三色组件。 在一个实施例中，从打印机前面观察的扫描托架中的打印墨盒的顺序是青色，黑色，品红色和黄色。 也可以使用其他订单，并且可以使用附加的颜色。 本发明也适用于使用具有多组喷嘴的单个打印头的彩色打印机，每个喷墨打印机印刷不同颜色的墨水。