ABSTRACT To determine the preferred memory color ranges in printed images and to provide guidance for ink separation and ink adjustment in the printing process, this study conducted preference evaluation experiments based on eight types of memory‐color images, including sky, fruit, and skin tones, selected from the ISO 400 standard image set. Two ink adjustment methods were applied respectively to the original images: total ink limit settings ranging from 260% to 330% and channel‐wise ink adjustments for cyan (C), magenta (M), yellow (Y), and black (K). A total of 1056 printed images (8 image types × 132 ink adjustments) were produced, and the preference evaluations were conducted by 15 observers with normal color vision. The results show that, for different image contents, the highest average preference scores were generally observed under the 300% total ink limitation; the observers preferred the skin color with CIELAB hue angles between 39.7° and 47.9° and exhibited stronger preference for highly saturated fruit colors and sky blues. Overall, this study proposes an ink adjustment strategy for achieving preferred memory colors in printed images, which can reduce ink consumption, improving perceived color quality and production efficiency in the printing industry.
Shang et al. (Mon,) studied this question.
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