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What does 4 Colour print mean?
Four-colour printing is the technique applied in all modern print processes for colour reproductions. The basis for this consists of the four colours: cyan, magenta, yellow and key (black) – CMYK for short. Theoretically all colours can be mixed from the three subtractive primary colours cyan, magenta and yellow.
How can you tell a four color process print job from a spot color print job?
The easiest way to understand four-color process is by looking at the cartoons in the Sunday paper. The dot pattern is printed so coarsely on the newsprint that you can see all the dots. Squint at this image to see how your eyes translate the dots into smooth colors. Printed dots are usually finer than these.
Why is black used as a fourth printing channel?
In theory, mixing Cyan, Magenta and Yellow inks should yield a Blackcolour as a result but in practice, we get an unsatisfactorily muddy dark colour due to the nature of the pigments used and hence Black was introduced as a fourth colour in 4 colour process printing to achieve better detail and contrast.
Why is K used for black?
The K in CMYK actually stands for “Key,” as in “Key Color” or “Key Plate,” and yes, black ink is typically used as the Key. Granted this is a technicality, since it can be readily observed that in desktop publishing applications that use the CMYK color space, K is always black.
When to use 4 color rich black text?
4 Color Rich black text as illustrated above has a richer appearance of black and is often use for very large text in posters that accompany and match darker graphics and photos. Note that rich black ink is created using percentages of all 4 colors within the CMYK color palette. Think about this.
What kind of black ink do you use for black text?
Black text should only use CMYK combinations of 0, 0, 0, 100, which is also called pure black: Because CMYK prints use four color plates, text that contains other colors besides 100% black will also print the other colors along with black. If the color plates are not perfectly aligned (registered), this could result in blurry text.
Why does CMYK print black with other colors?
Because CMYK prints use four color plates, text that contains other colors besides 100% black will also print the other colors along with black. If the color plates are not perfectly aligned (registered), this could result in blurry text. When printing offset, any colored image will use all four CMYK colors.
Why are my black text prints in blue instead of black?
My black text (and pictures) print light blue instead of black. I’ve replaced the cartridge twice and I’m still having the same issue. I’ve cleaned the print heads numerous times. Solved! Go to Solution. 11-27-2011 04:31 PM After trying to solve this problem for over an hour, I finally hit upon a solution.