Ways to avoid typographical errors in design works
1. Set the picture resolution correctly
The screen resolution depends on the physical size of the image on the screen, while the so-called print resolution determines how crisp the design will look. 72dpi is the usual resolution for web images, and 300dpi is the standard resolution for print images.
The more dots, or pixels, there are per inch, the higher the quality of the detail in the image will be reproduced in print. Make sure that all design documents are at 300dpi resolution, including all illustrations or images. If you put a 72dpi resolution image into a 300dpi resolution file, it will look very small because the software automatically scales the image to the different resolutions. The 300dPI images required for printing are usually large, so a random image found on the website will definitely not work.
2. Distinguish between RGB and CMYK correctly
The first problem is the novice to RGB and CMYK color concept is not clear. RGB (red, green, blue) is a color enhancement system that uses light to produce different colors that become brighter as the light source increases. RGB colors are commonly used in digital design because this is the color configuration of the screen. If the RGB color is used in the printing design, the problem is big. CMYK (cyan, magenta, yellow, and black) is a subtractive color system that is mixed with ink to produce different colors, similar to the way traditional painters use pigments, where more ink means darker colors. The color range of the light source color (the color enhancement system) is much richer than the printing color of the ink mixture, so the CMYK mode in the design software limits the color saturation range that can be achieved in the printing. If you make the mistake of choosing RGB instead of CMYK in a print design, the result will be that the bright colors selected in the design will not be achieved in the print (without special ink), and you will be amazed at the dull color of the printed product.
3. Pay attention to the CMYK value
In the previous article we have mentioned that the CMYK color system is deepened with the increase of ink, which is realized by offset printing (if the small amount, then uses digital printing). An offset printing press puts cyan, magenta, yellow and black ink together in the same area of the paper surface, and the ink is superimposed to produce richer colors. The amount of ink in each color is controlled by the gray screen. In the design software, we can select the colors through the color picker, or we can use the swatch or CMYK color palette. Keep in mind that too much cyan, magenta, yellow and black will result in oversaturation. If the sum of the four colors is more than 280%, the finished product will be blurred due to an excessive pile of colors, and it may also stain (the ink on the previous page is not dry). Some colors that look fine on a computer screen are always darker in print than they are on the screen. Mixed ink may also cause blurring of text and fine graphics. If cyan, magenta, yellow and black are slightly out of alignment (alignment in printed documents), the small text will become blurred and difficult to read. If you want your text to be smooth and clear, use a monochrome color, such as 100% black, to make your text visible and crunchy.
4. Do not use PS black
In Photoshop, the D key is a shortcut for resetting foreground and background colors to default values.
Click on the default black of PS to see, if is it quite black. If you look at the CMYK numbers, you'll find cyan 75%, magenta 68%, yellow 67%, and black 90% (300% total). This sum is excessive, remember to manually set the black color value correctly. If it is black text, it can be 0,0,0,100 (single black), but if it is a large background color, it is not appropriate because it will look dark gray in print, not black. Therefore, the best use of large areas of black 4 color black, the numerical combination of choice is many, but 50,40,40,100 has been proven to be the most popular choice, in single black mixed with other colors to make black look thicker, and the sum of 4 color values are not beyond the safe range.
5. Check font and line thickness
The function of the gray screen in the printing process is to control how much ink will be printed on the paper, the principle is to control the density of dots, the lighter part of the color is made up of sparser dots. The problem, then, is that when the print object is very small, details are lost, such as very small font size or very thin lines, which can be difficult to see. Therefore, the recommended size is no less than 6 pounds, depending on the font you choose. The Helvetica Ultra Light font is so thin that it should be hard to read at more than 6 pounds. When preparing the document for printing, it is important to remember to check the document for any particularly small or thin elements.