73:(SPI). For instance, if the target output device is capable of printing at 100 LPI, an optimal range for a source image would be 150 to 200 PI. Using fewer SPI than this would not make full use of the printer's available LPI; using more SPI than this would exceed the capability of the printer, and quality would be effectively lost.
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that is built up by physical ink dots made by the printer device to create different tones. Specifically LPI is a measure of how close together the lines in a halftone grid are. The quality of printer device or screen determines how high the LPI will be. High LPI indicates greater detail and
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In order to effectively utilize the entire range of available LPI in a halftone system, an image selected for printing generally must have 1.5 to 2 times as many
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In order to convert between L/in and L/cm the following formulas can be used:
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Countries using the metric system tend to use lines per centimeter (L/cm).
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Another device that uses the LPI specification is the
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Lines per inch to lines per cm: L/cm = 0.394 x L/in
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For lines of text per (vertical) inch of paper, see
117:Lines per cm to lines per inch: L/in = 2.54 x L/cm
101:Conversion between Lines per inch and Lines per cm
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54:is not very dense, and has relatively high
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50:often use a halftone system. Typical
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199:Measuring Resolution Inch by Inch
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88:Conversion of the LPI to the
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120:i.e. 100 L/cm = 254 L/in
114:i.e. 254 L/in = 100 L/cm
18:Body height (typography)
168:"What is a line screen"
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96:150 LPI x 2 = 300 DPI
64:glossy (coated) paper
172:facweb.cs.depaul.edu
130:Display resolution
176:DePaul University
84:Conversion to DPI
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220:Units of density
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145:Samples per inch
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209:Categories
181:2018-07-14
151:References
48:newspapers
44:magazines
36:halftones
215:Printing
124:See also
56:dot gain
42:Printed
32:printing
46:and
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28:LPI
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