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    • 3. 发明授权
    • Color proofing method and apparatus, and recorded medium on which color proofing program is recorded
    • 彩色打样方法和装置以及记录了彩色打样程序的记录介质
    • US07321448B2
    • 2008-01-22
    • US11377149
    • 2006-03-16
    • Nobukatsu NishidaKazuyuki UragamiMakoto ItoNaoto Takeda
    • Nobukatsu NishidaKazuyuki UragamiMakoto ItoNaoto Takeda
    • H04N1/60H04N1/409G06K9/00G03F3/08
    • H04N1/6052B41M1/14G03F3/101H04N1/6033
    • In a method for improving the color reproducibility of printed matter to be produced by a printing press in proof print produced by a proof press, a look-up table containing converted values of image data over the entire color space with respect to the proof press is created, the look-up table is corrected based on the color of a printing paper for the printing press and a paper exposed area factor in the proofing, and proof print is created by the use of the corrected look-up table. Furthermore, proof printing image data, in which each of levels of monochromatic color gradation of black on the printed matter is represented on the proof print, out of the proof printing image data over the entire color space in a subtractive process resulting from color matching between proof print by the proof press and the printed matter by means of the printing press is corrected in such a manner that a part having a black ink area factor of 100% on the printed matter is represented only with black ink also on the proof print, but that a part other than the part having a black ink area factor of 100% on the printed matter is represented on the proof print by using under color removal, so that the representing characteristics of the black ink on the printed matter are reproduced on the proof print.
    • 在用于提高由印刷机在印刷机上产生的印刷品的色彩再现性的方法中,由校样印刷机产生的校样印刷品中,在整个颜色空间相对于证明印刷机的包含图像数据的转换值的查找表是 基于印刷机的打印纸的颜色和打样中的纸张曝光面积因子来校正查找表,并且通过使用校正的查找表来创建校样打印。 此外,在由打印物上的黑色的单色彩色等级的每个级别在校样印刷品上表示的校样打印图像数据中,从校正打印图像数据中的整个色彩空间中的校正打印图像数据中, 校正用印刷机和印刷品通过印刷机进行的防伪印刷的校正方法是使印刷品上的黑色墨水面积因子为100%的部分仅在印刷品上也用黑色墨水表示, 但是通过使用颜色去除,在打印物上的黑色油墨面积因子为100%的部分之外的部分被表示在证明打印件上,使得印刷品上的黑色墨水的表示特性在 打印证明。