HP Latex 1500 User guide - Page 406
Local color variations, Color variations when tiling, printing each pass. If possible
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source of color inaccuracy. You can eliminate the possibility by performing a color calibration (see Color calibration on page 144). ● ICC profile. If you are using the wrong profile, your colors are likely to be inaccurate. Check which profile you are using. If necessary, you can make your own ICC profile for the printer, printheads, print mode, and substrate that you are using. ● Ink density, which affects color saturation. If the color saturation of your print seems wrong, try changing the ink density in the substrate preset; you may need to change the number of passes at the same time. Local color variations In some cases, at the edges of area fills, a small number of ink drops may be missing or slightly darker, producing a local color variation. These defects are due to the printheads travelling from side to side without printing. ● In each pass, the first 1 or 2 drops of a color are missing or smaller. ● In each pass, the first 1 or 2 drops of a color are darker because they are more concentrated with pigment. To resolve these defects, add spit bars at each side of the image, to make sure nozzles are refreshed before printing each pass. If possible, you could also rotate the image to avoid situations such as shown in the example. Color variations when tiling When tiling, it is important that all tiles have the same length and that the colors of the mating edges match. This section focuses on color variations; for recommendations about length consistency, see Edit a substrate preset on page 76. To achieve better color consistency it is recommended to optimize tiling performance via the IPS (Substrate > Tiling optimization). See Optimize for tiling on page 71. 398 Chapter 13 Troubleshoot print-quality issues ENWW