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The accuracy of the software depends on the image quality, text size, and
structure of the original and the quality of the scan itself. Make sure that
your original has good image quality.
Colored backgrounds can cause images in the foreground to blend too
much.
Error messages appear
"Unable to activate TWAIN source" or "An error occurred while acquiring
the image"
If you are acquiring an image from another device, such as a digital camera
or another scanner, make sure that the other device is TWAIN-compliant.
Devices that are not TWAIN-compliant do not work with the HP software.
Make sure that you have connected the USB cable to the correct port on the
back of the computer.
Verify that the correct TWAIN source is selected. In the software, check the
TWAIN source by selecting Select Scanner on the File menu.
Error, The Scan cannot be performed because another program has control
of the HP imaging device
If you are using a computer running Mac OS X, quit the HP Scan application. If
you get the error message again, restart the computer and try to scan again.
Scanned image quality is poor
The original is a second-generation photo or picture
Reprinted photographs, such as those in newspapers or magazines, are printed by
using tiny dots of ink that make an interpretation of the original photograph, which
degrades the quality. Often, the ink dots form unwanted patterns that can be detected
when the image is scanned or printed or when the image appears on a screen. If the
following suggestions do not solve the problem, you might need to use a better-quality
version of the original.
To eliminate the patterns, try reducing the size of the image after scanning.
Print the scanned image to see if the quality is better.
Make sure that the resolution and color settings are correct for the type of scan
job.
Text or images on the back of a two-sided original appear in the scan
Two-sided originals can "bleed" text or images from the back side to the scan if the
originals are printed on media that is too thin or too transparent.
The scanned image is skewed (crooked)
The original might have been placed incorrectly. Be sure to use the media guide when
you load the original. For more information, see
Load an original in the scanner.
The image quality is better when printed
The image that appears on the screen is not always an accurate representation of the
quality of the scan.
Try adjusting the computer monitor settings to use more colors (or levels of gray).
On Windows computers, you typically make this adjustment by opening Display
on the Windows control panel.
Try adjusting the resolution and color settings.
Chapter 6
84 Solve a problem
88


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