本文发表在 rolia.net 枫下论坛Thank you for contacting the new HP.

I understand that when trying to scan at a high resolution you need to
scan twice in order to get a true image or else you the scanned image
has vertical multicolor stripes over it. Please refer to the
information mentioned below.

The HP PrecisionScan and PrecisionScan Pro software set the resolution
for you. In almost all cases, you will get the best results and
smallest file size if you use the resolution the software has determined
to be the best for your particular image and destination. You do not
need to set the resolution to match the highest resolution that the
printer supports. This adds data and does not improve quality. Let
the HP PrecisionScan and PrecisionScan Pro software determine the best
resolution setting for your photo and destination. Please keep the
following in mind:

* Resolutions higher than 75 dots per inch (dpi) do not improve the
appearance of an image displayed on the screen.
* Resolutions above 300 dpi do not improve image quality, even for
high-resolution printers.
* If you are scanning a photo or a color drawing to an image file or
an image and text file, and you only want to use the resulting image
on-screen (for example, in a World Wide Web page), change the
resolution to 72-75 dpi.
* If you are scanning a photo or a color drawing to an image file or
an image and text file, and you intend to print the file on a
printer with a resolution of 1200 dpi or higher, change the
resolution to 300 dpi.

NOTE: This information is also available in the
PrecisionScan and PrecisionScan Pro online
help.

If you need further assistance, please reply to this message. You
may also find technical and troubleshooting information along with
software updates, on our HP Customer Care web site at

http://www.hp.com/support/scanjets

Best regards,
Chris
Customer Solutions support agent for the new HP

* Our advice is strictly limited to the question(s) asked and is
based on the information provided to us. Problems and solutions
may depend on the nature of your system environment and various
other parameters that are unknown to HP; therefore, HP cannot assume
any responsibility or liability. Please be advised that technical
information changes as new data becomes available, therefore, HP
recommends that you regularly check our Customer Care Web site for
possible updates at:

http://www.hp.com/go/support

HP shall not be liable for any direct, indirect, special, incidental
or consequential damages in connection with the use of this
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