Epson ES-1200C - Manual (Page 53)

The image does not look the same as the original.
Try different settings and combinations of the scanner
functions.
Check that your software is correctly installed. Check the
capability of your software and computer. (gee your software
and computer manuals.)
If you are importing an image file into your application
software, see if the file format is acceptable for your software.
Also check that the settings of your application and your image
match (See your software manual.)
A line of dots is always missing on the scanned image.
If this happens on your printed image only, your printer or its
print head is probably malfunctioning. (gee your printer
manual.)
If this happens on both your screen and printout, the scanner’s
sensor may be malfunctioning. Consult your dealer.
When halftoning is used, textured patterns composed of a series of
dots appear on particular areas of an image.
This is normal. See the Appendix for examples of halftoning.
3-8 Troubleshooting