HP Designjet T1200 Printer series - Manual (Page 165)

Vertical lines of different colors
If your print has vertical bands of different colors along it:
1. Try using thicker paper, choosing from the recommended paper types such as HP Heavyweight
Coated Paper and HP Super Heavyweight Paper. See
Order paper on page 129 .
2. Try using higher print-quality settings (see Printing on page 49 ). For instance, if you have set the
Print Quality slider to Speed, try setting it to Quality.
White spots on the print
You may notice white spots on the print. This is probably due to paper fibers, dust or loose coating
material. To avoid this problem:
1. Try cleaning the paper manually with a brush before printing, to remove any loose fibers or
particles.
2. Always keep the cover of your printer closed.
3. Protect your paper rolls and sheets by storing them in bags or boxes.
Colors are inaccurate
If the colors of your print do not match your expectations, try the following:
1. Check that the paper type you have loaded corresponds to the paper type selected in the front
panel and in your software. To check on the front panel, use the
View information key . At the
same time, check the color calibration status. If the status is PENDING or OBSOLETE, you
should perform color calibration: see
Color calibration on page 66 . If you have made any
changes, you may wish to reprint your job in case the problem has been solved.
2. Check that you are printing on the correct side of the paper.
3. Check that you are using appropriate print-quality settings (see Printing on page 49 ). If you have
selected the Speed or Fast options, you may not get the most accurate colors. If you change the
print-quality settings, you may wish to reprint your job at this point in case the problem has been
solved.
4. If you are using Application Color Management, check that the color profile you are using
corresponds to the selected paper type and print-quality settings. If you have doubts about which
color settings to use, see
Color management on page 65 .
5. If the problem consists of color differences between your print and your monitor, please follow
the instructions in the “How to calibrate your monitor” section of the HP Color Center. At this
point, you may wish to reprint your job in case the problem has been solved.
ENWW Vertical lines of different colors 157
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