| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a printing method which enables reproduction of a color domain more unlimitedly approaching a color reproduction domain of "RGB", in regard to the printing method using four process colors capable of making a color rendering domain (gamut) wider than that in the case of printing Japan color standard ink conforming to the ISO standard. <P>SOLUTION: In regard to a lithographic printing method using the ink selected from yellow, red, indigo blue and India ink, this lithographic printing method uses the yellow, red and indigo blue inks of which the L*a*b* values of each color in the case of printing on paper having L*a*b* within a specific range, as well as the L*a*b* values of each color in the case of solid overprinting of two colors selected from yellow, red and indigo blue and moreover the L*a*b* values in the case of solid overprinting of three colors of yellow, red and indigo blue, are within specific ranges respectively. Furthermore, this method uses ink selected from the ink of five colors which is prepared by combining purple ink of which the L*a*b* values in the case of solid printing within a specific range are within a specific range, as an indigo blue density, with the combination of the inks of the four colors. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
