HP PageWide 6000 User Guide - Page 130
Color fringing, Vibration, can be seen at the borders of sharp black text over a white background
View all HP PageWide 6000 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 130 highlights
Actions 1. Make sure that you choose the correct paper type in the scan settings before scanning. 2. When dealing with copies, you must take into account that good color matching between a given original and its copy can be achieved only if both are printed on the same type of paper. In the case of scanned files, good color matching can be achieved only if your monitor is color-calibrated or compliant with sRGB or AdobeRGB standards. 3. If the above conditions are met, you should also take into account that various scanner settings can affect the final color result, such as contrast, background cleaning, content type and paper type. To obtain the best possible colors, set contrast and background cleaning to 0, set the content type to Image, and select the most appropriate type of paper according to the original you are scanning (if in doubt, use photo paper). 4. Note that the image enhancement settings are automatically reset to default values after a certain time, so you may get a different result from copying the same original if you have not checked the settings before starting the job. 5. If you scanned to a PDF file, try opening the PDF file in Adobe Acrobat and saving it as a PDF/A file. For more information, see http://www.adobe.com/products/acrobat/standards.html (English only). 6. For optimum color results, clean and calibrate the scanner as indicated in Maintenance on page 156. 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 Maintenance on page 156. 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". 124 Chapter 7 Scanning and copying (MFP only) ENWW