HP DesignJet T2600 User Guide - Page 131

Color fringing, Vibration, example on the right, below. Normally

Page 131 highlights

6. For optimum color results, clean and calibrate the scanner as indicated in Scanner maintenance on page 183. 7. Avoid placing the scanner in direct sunlight or near sources of heat or cold. Color fringing The problem called "color fringing" occurs when the scanner is affected by incorrect paper advance and/or miscalibration. Nevertheless, some amount of color fringing is unavoidable, especially at high scanning speeds. It can be seen at the borders of sharp black text over a white background, as in the example below (original on the left, scanned image on the right). Note the black arrow indicating the scanning direction. Actions 1. Repeat the scan after increasing the scanner's resolution (choose Max quality if scanning, Best if copying). Turn your original 90 degrees, if possible, before scanning it again. 2. If the problem persists, clean and calibrate the scanner as indicated in Scanner maintenance on page 183. Repeat the scan at a high resolution (Max if scanning, Best if copying) and check whether the problem disappears. 3. If the problem still persists, you can diagnose this issue by analyzing the patterns 6 and 8 (A to E) of the diagnostic plot. The black horizontal lines appear slightly colored at the top and bottom of each end (in the example on the right, below). Normally, they look red at the top and blue or green at the bottom, but it could be the other way around. If you see this effect, call your support representative and report "color fringing problem after calibration". Vibration If your printer is not properly placed on a flat surface, or if the scanner lid does not close correctly, you may sometimes find that the scanned image suffers from vibration, as in the following example: original on the left, scanned image on the right. ENWW Scanner troubleshooting 123

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6.
For optimum color results, clean and calibrate the scanner as indicated in
Scanner maintenance
on page
183
.
7.
Avoid placing the scanner in direct sunlight or near sources of heat or cold.
Color fringing
The problem called “color fringing” occurs when the scanner is affected by incorrect paper advance and/or
miscalibration. Nevertheless, some amount of color fringing is unavoidable, especially at high scanning speeds. It
can be seen at the borders of sharp black text over a white background, as in the example below (original on the
left, scanned image on the right). Note the black arrow indicating the scanning direction.
Actions
1.
Repeat the scan after increasing the scanner’s resolution (choose Max quality if scanning, Best if copying).
Turn your original 90 degrees, if possible, before scanning it again.
2.
If the problem persists, clean and calibrate the scanner as indicated in
Scanner maintenance
on page
183
.
Repeat the scan at a high resolution (Max if scanning, Best if copying) and check whether the problem
disappears.
3.
If the problem still persists, you can diagnose this issue by analyzing the patterns 6 and 8 (A to E) of the
diagnostic plot. The black horizontal lines appear slightly colored at the top and bottom of each end (in the
example on the right, below). Normally, they look red at the top and blue or green at the bottom, but it
could be the other way around.
If you see this effect, call your support representative and report “color fringing problem after calibration”.
Vibration
If your printer is not properly placed on a flat surface, or if the scanner lid does not close correctly, you may
sometimes find that the scanned image suffers from vibration, as in the following example: original on the left,
scanned image on the right.
ENWW
Scanner troubleshooting
123