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A typical computer scanner
One of the key
factors in choosing a computer scanner is the scanner resolution. The scanner
resolution is important because it decides detailed the scanned digitla image
will be.
If you plan to scan in
large format, detailed pictures, then a high resolution is critical. Scanner
resolutions range from 600 by 1200 dpi (low-end) to 2400 by 4800 dpi
(high-end). 2. What Scan Area Do You Need? Another key
point to take note of when choosing a computer scanner is the scan area.
If you want to scan a large document, newspapers
or maps, then a large scan area becomes important. You can't possibly scan a
large piece of paper on a small scan area. Typically, low-scanners have scan areas
around 8.5 by 11.7 inches, while high-end scanners go up to 8.5 by 14 inches. 3. Scan Head Technology There
are two kinds of scan head technology - CCD (charge-coupled device) and CIS (contact image sensor).
In general, CIS based scanners are smaller than CCD scanners
and in most cases, they don't need a separate power cord. Of course, not all
folks will bother about scan head technology - it need not be a consideration
for average home use. 4. Scanner Ports Now, the
next item to think about is the type of ports supported by the scanner. You home
computer must have a port compatible with the scanner. Most current scanners come with a USB 1.1
port, although the newer ones boast USB 2.0 ports. Conclusion Hopefully, this article has helped you understand what you should think about before buying that computer scanner. It helps to go through the above specs first before shelling out any cash. Happy shopping!
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