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A-61182 October 2001 15
Resolution
Resolution or dots per inch (dpi) indicates the scanning resolution, which largely
determines the quality of the scanned image. The greater the resolution, the better the
reproduction will be.
However, scanning at a higher resolution also increases scanning time and file size.
Therefore, up to a certain dpi level, the resolution will not be visually improved, but the
file size will be larger.
Tips
An A4-size color image scanned at 300 dpi in 24-Bit Color mode is approximately 25 MB
in size. A higher resolution (usually over 600 dpi) is recommended only when you need
to scan a small area in 24-Bit Color mode.
Refer to the following table to choose the best image resolution for use with your
application.
Scanner Settings
Application
Image Type Resolution (dpi)
File, Fax, E-mail
Your Document
Black and White 200
View, Copy, Edit
Your Color Picture
24-Bit Color 100
OCR*
Your Document
Black and White 300
* OCR (Optical Character Recognition): the process of converting an image to a text
format.