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Halftones

Let's face it. Every high-resolution imagesetter on the market prints only in black and white. And almost every laser printer prints only in black and white. There's clearly a lot to be said for black and white. What you need to realize, however, is that black and white is not gray. Real laser printers don't print gray (at least not the ones I'm going to talk about).

So how do I get a picture with grays in it into the computer and out onto paper? The answer is halftones. The magic of halftoning is that different levels of gray are represented by different-sized spots, which, when printed closely together, fool the eye into seeing the tint I want.


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