Advanced Scanning

Note: Resolution in professional printing is measured in lines per inch (lpi), rather than dots per inch (dpi).

The best resolution for a scanned image depends on the type of image you are scanning and your final output device. The following table shows the best scanning resolutions for the most common applications:

 

Recommended

Output device

Resolution

 

 

Inkjet printer

240 dpi

 

 

Monochrome laser printer

150 dpi

 

 

Computer screen

72 dpi

 

 

Four-color printing press with 150 lpi

250 dpi

 

 

Four-color printing press with 175 lpi

300 dpi

 

 

B&W printing press with 85 lpi

150 dpi

 

 

B&W printing press with 100 lpi

170 dpi

 

 

B&W printing press with 133 lpi

225 dpi

 

 

Line art logo

600 dpi

 

 

Optical Character Recognition (OCR)

300 dpi

 

 

The higher a resolution you select, the larger the resulting image file. For example, an 8.5 x 11 inch original scanned at 300 dpi can produce a 24 MB file.

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