Printing, as the name implies, India, understood as a seal, finger printing in modern printing. Brush, understood as the printing plate ink and the transfer of ink from the plate to the substrate. The main function of "printing" is to complete the copying of the "shape" of the original. The main function of "brushing" is to complete the reproduction of the "color" of the original. All kinds of manuscripts can be copied in large numbers using printing technology and corresponding equipment.
"Shape" mainly affects the clarity of prints. "Color" mainly affects the visual effect of print colors - whether it is similar to the scene in the visible light color space of nature. The fourth generation of printing technology - the new technology in high-fidelity printing technology can be divided into two categories. The application technology for improving the definition of printed matter is called high-definition printing technology; the application technology for expanding the color gamut of printing as the main means and the printing color is used for the purpose of controlling visible color effects is called high-fidelity color printing technology. . The application of the above two technologies may have a crossover and can be distinguished from the technical principle. The purpose of this distinction is to allow printing companies to understand where their goals are and to choose which technologies to use when formulating their own technical plans.
At present, high-definition printing technologies mainly include the addition of an amplitude modulation network of 250 liters or more and the associated incremental adjustments of gradation values ​​and the control of printing plate characteristics; dot widths of 20 microns or less, primary or secondary FM screening, and matching tonal adjustments. Value characteristics measurement and regulation techniques. The core of high-definition technology is to reduce the dot size and change the way the dots are arranged. The main feature of high-fidelity color printing technology is that the printing base color ink is more than the conventional CMYK four colors. In addition to black ink, all the base color inks are involved in color separation and neutral gray balance. The core of high fidelity technology is the application of new color separation algorithms and neutral gray component control algorithms.
The use of high-chroma (or high-density) CMYK four-color inks to expand the printing color gamut, mainly rely on the improvement of the ink performance, the color separation technology used has not changed, and the actual test proved that the high chroma four-color ink printing gamut expanded It is also very limited, so it should not be attributed to high-fidelity printing technology, it should be seen as a further improvement in the quality of four-color printing.
In some professional magazine articles, high-definition and high-fidelity technologies are collectively referred to as high-quality printing technologies. The Hi-Fi Color Printing in Hong Kong is called the original color printing. These are just different words and the contents are basically the same. However, there are also articles that include technologies such as changing the screening method or controlling the amount of ink used to make prints clearer. This is actually very inaccurate.
