Scanning from TWAIN and WIA
Xerox
®
DocuMate
®
4799
User’s Guide
7-125
Resolution
The resolution determines the amount of detail you can see in the scanned image. Resolution is the clarity of the
image measured in dots-per-inch (dpi).
Move the slider left or right to change the resolution for the scanned image. The higher the resolution, the clearer
the image. However, high resolution scans also produce larger file sizes. The available range displayed in the
slider area are within the minimum and maximum range supported by your scanner. The resolution slider will
always display the correct range for the current scanner.
Choosing resolution values
Typically, when making copies of black and white documents, 100–150 dpi will create an image of similar quality
to the original. When making copies of color documents or photographs, 150–200 dpi will create an image of
similar quality to the original.
Higher resolution settings are generally used for creating an image that can be enlarged without losing image
quality, but take longer to scan.
Some resolution settings for typically scanned items are:
•
Text document
letters, forms, or other typed black and white documents – 100 dpi to 150 dpi
•
Text document
letters or forms with hand printed text – 150 dpi
•
Text document (for OCR)
forms, letters, memos, or spreadsheets – 300 dpi
•
Business cards
or other items with small print – 300 dpi
•
Color page
with graphics or color photographs – 150 dpi
•
Color photographs
of poor quality for image enhancement – 300 dpi
•
Color photographs
for printing – 200 dpi
•
Color photographs
for email – 100 to 150 dpi
•
Magazine page
with graphics, line art, or color photographs – 200 dpi
Document Size
Standard document sizes
Click the drop down menu and select a pre-defined document size from the list. The available document sizes are
within the scanner's range of minimum and maximum item size.
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