What are the requirements for the screen production of the advertising light box

There is a clear difference between the advertising posters of the ultra-thin light box and the traditional advertising light box pictures. The side-opening light box and the ultra-thin light box used in the advertising pictures have special indicators and requirements.
The printed color of poster patterns is higher in visual communication than graphics and manuscripts. Whether each element can truly reflect the intention of the advertisement designer and achieve the best visual communication effect is often achieved through various printing methods. The color pattern reproduction principle of the light box is based on the tone reproduction.
In order to meet the needs of the printing process, screens and photographic screens were used in the past. Now most of them use electronic color separation and screening methods to decompose the image of the continuously adjusted original into a mosaic shape that cannot be distinguished by the human eye at the observation distance. The image pixel dots of different density levels achieve the visual effect of continuous adjustment at the observation distance. No matter which printing process the ultra-thin light box adopts, the level and definition of the original manuscript should be copied as effectively as possible on the printed matter.
It is not very difficult to copy line manuscripts, while copying tone manuscripts is much more difficult. The image on the manuscript of the side-opening light box should be transformed into an image composed of dots with light and dark shades through photographic screening or electronic color separation and screening, which looks the same as the original. The choice of manuscripts should be focused on five factors: color, tone value, structure, color saturation, and form. The key to color gradation reproduction is color separation and screening, which is based on the above restrictions.