It’s all about the screens. Well, who cares about screens? If you buy offset printing in color services you need to know the differences between your 2 different screen technologies found in commercial printing. It affects the caliber of your entire printing in color. You might know some of this stuff, but most those who buy printing do not know what you will learn in the following paragraphs. This is a little technical, but stay with it simply because you might want to take on the project in terms your printing is printed. Let’s quickly begin.
This is one way it functions. Your files head to pre-press where they’re reviewed for technical errors before being made into screens for printing; it does not take 1st step along the way. Customer files then go into a plate maker to be processed and after that transferred (offset) to 4 different metal plates, one everyone of cyan, magenta, yellow and black. Each plate transfers some of it into a rubber blanket and the blanket offsets some of it to the paper.
Most commercial printers use conventional AM (amplitude modulated) line screens, which can be dots arranged in a rosette pattern to makes images. Meaning each screens plate must align perfectly at very high-speeds of rotations from the press cylinder to hold registration sharp. At typical press run speed alignment with the plates may be unstable. The way it works is a few dots are large and some dots are small according to their tonal value. The higher the dots the greater ink they pick-up.
Essentially the most frequently used line screen dots come from 150 to 300 dots per inch based on the screens employed by the printing firm. Printing companies go with a form of screen and then use it for those their printing, so you can’t ask your printer to use high dot line screens. An issue is conventional screens work with a great deal of ink that pools together. Detail is reduced brought on by flooding the paper with an excessive amount of ink. Color gamut could be the selection of colors that could be printed. Excessive ink inhibits subtle colors and tones are lost for the reason that color gamut is reduced. Subtle colors can’t be printed and moire patterns can occur in textures and patterns. Something is banding colored gradations because it’s difficult to print smooth transitions of color tones with AM screens.
Like several print buyers you would like your advertising, sales, marketing promotions being impressive and attract lots of attention at a reasonable cost. You might be surprised to learn the cost and turn-around times using FM screening technology is probably you can forget and could be less money then what you’re purchasing conventional AM screen printing.
Next time your ready order color printing ask your printer what line screen they normally use and when they’ll use stochastic screens. Don’t be surprised should they never got word of it. When they can’t you can get high quality printing by finding a company that uses high-definition FM stochastic printing screen technology. When excellence can be obtained good is just not enough.
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