GCR non-color structure during prepress production

In the printing industry in modern China, commercial rotation printing has taken off. The launch of the commercial rotary machine is to raise commercial printing to a higher level. It adapts to the requirements of the modern printing market with shorter production cycles, large quantities of printed products, and high quality, efficiency, and efficiency. With the standardization of work environment and machine operation, quality control of prepress production plays a decisive role in rotary printing. If the preparatory work is not in place, prepress production is not suitable for commercial rotary printing, which will result in a delay in the authenticity rate and a large amount of paper waste, which will seriously affect the printing quality and timeliness of its products. To make full use of the advantages of commercial rotation printing, prepress production that meets actual needs is indispensable.

High-speed commercial rotary machines generally use web printing. The paper path is relatively long. The physical and optical properties of the paper surface are not very uniform. The drying is mainly used to speed up the ink drying. There are different requirements for the prepress design from offset offset and newsprint offset. .

GCR (abbreviation of Grey Component Replacement) means that in a color image reproduction, any non-chromatic value of a complex color area superimposed or mixed with three primary color inks may be replaced with an ink color equivalent to the weakest color of the three primary colors, and Get the same visual effects.

In the actual production process, sometimes some supermarket sales of commodity alerts (DM single) ink is difficult to adjust, especially the large area of ​​the dark tone or the field part, the reason is that Y, M, C version is too heavy, it is difficult to achieve The sexual gray balance, after many times of practice, found that yellow, blue and green versions are all deep, not only that ink is hard to print even, it is easy to paste and is not conducive to register.

In the front-end production must use GCR technology, increase the depth of the black version, use black to replace the neutral gray, reduce the amount of ink used in other colors, as long as the black version is normal, other color version that use the ink volume has slight fluctuations, printing The color is also very easy to maintain stable, thanks to the black version of the skeleton. By reducing the amount of colored ink, it is not only easy to meet the proof requirements, but also reduces the production costs.