3 results about "Gamut" patented technology

The invention discloses a high-precision frequency-modulated printing process which comprises the following steps of: 1. confirming an optimal printing plate screen dot numerical value and a printing plate output curve which are suitable for a 10-micron frequency-modulated screen dot and specifying optimal printing solid density, an optimal screen dot extending value and an optimal ink printing sequence standard which are suitable for 10-micron frequency-modulated screen dot printing to obtain a printing color gamut with high color gamut generation; and 2. carrying out printing work and data check strictly according to the process standard specified in the step 1 and all printing plate data obtained in the step 1 in an electronic color scanning and pattern adjusting procedure, a digital proofing procedure, a computer direct printing plate output and printing plate flushing procedure and a printing procedure of general printing work. In the high-precision frequency-modulated printing process provided by the invention, the traditional printing idea is eliminated, 1485 groups of color management data which are suitable for 10-micron frequency-modulated printing and a 10-micron frequency-modulated printing process specified standard are especially developed so ad to realize the 10-micron frequency-modulated screen dot printing.

When a grid point that is the object to be mapped is present in a first division region a color of which has lightness equal to or higher than the lightness at the maximum chroma point in the color gamut and has chroma higher than the chroma at that point, the intersection of a straight line connecting the grid point to the maximum chroma point and an achromatic axis is calculated and a point having lightness equal to or higher than the lightness of the intersection is set as the focal color. Then, the intersection of a straight line connecting the object grid point to the focal color and the boundary of color gamut is set as an output color for the grid point. The output colors are prevented from being separated into color on the high and on the low lightness sides with respect to the maximum chroma point.