Printing a true-ink reference, and refining gray accuracy, for optimum color calibration in incremental printing
    11.
    发明授权
    Printing a true-ink reference, and refining gray accuracy, for optimum color calibration in incremental printing 有权
    打印真墨参考,并提高灰度精度,以实现增量打印中的最佳色彩校准

    公开(公告)号:US07027182B1

    公开(公告)日:2006-04-11

    申请号:US09702929

    申请日:2000-10-31

    申请人: Pau Soler

    发明人: Pau Soler

    IPC分类号: G06F15/00 G06K1/00

    CPC分类号: H04N1/6022 H04N1/6033

    摘要: Ramps are printed with ink of a particular color, and also nominally in that color but by inks of other colors. A measured actual-ink ramp is a standard to fix the other-colors ramp, and correct other printing in those colors. In one aspect a particular color is gray, actual ink black (K), and other-color inks magenta (M), yellow (Y) and cyan (C). In another aspect, actual ink is red (R), green (G) or blue (B); other colors M, Y and C in respective pairs. For gray/black, the K ramp is a zero-chroma standard to lower composite-black (cK) chroma below ˜2.5 ΔE. A sampling aspect prints for each gray tone plural cK-ink combinations preferably bracketing nominal gray values; and searches these for one nearest the particular gray—or most closely bracketing it, for interpolation—for best match. Bracketing is best optimized, by a color-space pattern centered on nominal. Other aspects are taught.

    摘要翻译: 斜面用特定颜色的油墨印刷,也以其它颜色的油墨标称。 测量的实际油墨斜坡是固定其他颜色斜坡的标准,并以其他颜色校正其他打印。 在一个方面,特定的颜色是灰色,实际墨黑(K)和其它颜色的品红色(M),黄色(Y)和青色(C)。 另一方面,实际墨水为红色(R),绿色(G)或蓝色(B); 其他颜色M,Y和C分别成对。 对于灰色/黑色,K斜率是零色度标准,以将复合黑(cK)色度降低到低于〜2.5 DeltaE。 采样方面针对每个灰色色调打印多个cK-墨水组合,优选地包围标称灰度值; 并搜索这些最接近特定灰色或最紧密包围它的一个,用于插值,以获得最佳匹配。 包围是通过以标称为中心的颜色空间模式进行最佳优化的。 教授其他方面。