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Glossary...
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The definitive source for industry terms
When a term has more than one meaning, all explanations are displayed.
LPI   Lines per inch. The number of dots per inch in a halftone screen. Newspaper images are about 85 lines per inch where as magazine photos are usually 133 lines per inch. The naked eye can distinguish up to about 120 lines per inch. (that means you can see dots up to that resolution). Duplicating line screens are generally around 120 lines per inch and litography is 150 to 225 line per inch.  

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