How does a color printer do when scanning manuscripts

Dalian Colour Printing Factory adds a third primary colour on the basis of the pure colour of two primary colours, which will reduce the colour and lightness of the printing colours, while the tone of the printing colours will basically remain unchanged, because the mixing of three primary colours will form a non-colour, and its effect is similar to that of printing with less proportion of colours and a certain amount of black ink, such as light and dark series and three. Color printing color.

Increasing the number of black ink on the basis of color will not change the tone of mixed color, but also reduce the brightness of color, such as double color series on pages 31-33, three color series on page44-70 and four color series; printing three color primary colors in close proportion will produce low color similar to Ib color, and adding a certain amount of color to black. The color is close.

In color printing, this feature is often used to reduce the amount of color ink, called background color removal (UCR) and gray component substitution (GCR). More common problems. Before output, it is necessary to check whether black text, especially small characters, is only on the blackboard and should not appear in other three-color editions. If so, the quality of printed products will be discounted. When RGB graphics are converted to CMYK graphics, the black text will definitely become four-color black.

Unless specified, it must be processed before it can be exported. When RGB mode picture output, RIP system usually automatically converts it to CMYK mode output. But its color quality will be greatly discounted. The finished products printed are light and not bright, and the effect is very bad. Pictures are converted into CMYK mode in photoshop. If they are scanned manuscripts, then they must go through the process of color correction before they can be used.