Print resolution
All print work (such as photo inkjet, laser, newspapers, magazines, photo books, and four-color lithographic printing) has to be set to a resolution of 300dpi as a best practice, so the files that are used are going to be far larger than those for web display. It's called the standard print resolution because it produces a seamless continuous tone image with no visible pixelation or color banding.
That being said, thanks to some fantastic resampling software, inkjet printers and most commercial four-color CMYK print devices can produce awesome results using lower-than-recommended resolution files. If you're not sure, check with your local business before you start outputting for print:
All terrestrial-based book-making software ...
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