High-fidelity color printing technology perfect

When people enjoy the fruits of economic prosperity in the information age, there is always the idea that scientists continue to inquire deeply into the unknown, continue to study new theories, and continuously obtain new technological achievements so that humankind can enjoy an unprecedented and wonderful life. At the end of the 20th century, the latest research results of color scientists were introduced into the printing separation process, which established a new printing quality standard. Colorimetry theory and technology research support the continuous improvement of color appearance description and color measurement techniques.

Printing manuscript color analysis and printing color separation modeling can all use spectral measurement and analysis techniques to establish new quality goals and create a process system that can be applied for engineering applications for printing companies in the actual production process. High-fidelity printing technology uses the actual scene reflection spectrum as the copy target, and selects the basic color ink to combine the larger color gamut space. The color component and the neutral gray component in the ink printing color match the hue color saturation and the color brightness in the original color respectively. , maintains the visual authenticity of the original color linearly in their respective gradations. These technologies differ from the existing four-color printing separation technology in principle. Therefore, the high-fidelity color printing technology has created a fourth generation of printing technology.

Today, color scientists all over the world have provided many valuable methods for the perception, measurement, and reproduction of colors, making it possible for us to think new ways about printing technology and quality, seek new methods, and take a new height.

The complexity of the regulation of the parameters of the printing company's busy process is mostly related to color images. The process of color image printing and copying is based on four-color separation. There are two issues worth considering about this foundation.

First, the printing of color images actually replicates the natural world. The printing process cannot directly copy the three-dimensional scene to the planar media. The photographing device projects the scene onto the photosensitive material or records it into the photoelectric conversion device and then passes it as a manuscript to the printing process. The manuscript expresses the shape, color, and brightness characteristics of the actual scene. In order to make the printed image closer to the observation effect of the actual scene, we should understand how the characteristics of the original recorded scene are different from its observation in the natural world. The technical details of the analysis of the differences between the two will be described separately. Here, it is pointed out that in the conventional four-color printing process, this is a problem that has been intentionally or unintentionally ignored. This causes the current four-color printing process to customarily adjust the relevant parameters from the CMYK signal obtained by scanning the original, resulting in a large difference between the brightness characteristics of the printed image and the actual scene, which could have been avoided to some extent.

Second, the four-color printing color space is much smaller than the color space of the light reflected by the scene, destined to a considerable difference between the color characteristics of the printed image and the actual scene, especially the saturation loss of the bright color is serious, together with the above reasons This makes the color of the four-color printing images monotonous, lack of hierarchy, lack of luster.

After unremitting experimentation by experts, the above two issues have been solved in a unified way in high-fidelity printing technology. The high-fidelity color separation technology controls the neutral gray component of the printing by visually perceiving the brightness of the color, and expands the printing color space to map the saturation of the perceived color, so that the printing image effect is closer to the observation effect of the actual scene. From this effect, we can say that high-fidelity printing technology is a sign of a new era in the history of printing technology. This technology will promote the development and application of exquisite printing, personalized color printing, and color security printing.

Source: China Anti-Counterfeiting Label Network