HP DesignJet T795 Using your printer - Page 157

Horizontal lines at the end of a cut sheet print This type of defect affects only the end of a print, within approximately 30 mm of the trailing edge of the paper. You may see some very thin horizontal lines across the print. To avoid this problem: 1. Print the Image Diagnostics Print. See The Image Diagnostics Print on page 152. 2. Consider printing with roll paper. 3. Consider using larger margins around your image. 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 120. 2. Try using higher print-quality settings (see Printing on page 46). 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. See View information about the paper on page 40. Also, press and then to check the color calibration status. If the status is PENDING or OBSOLETE, you should perform color calibration: see Color calibration on page 70. 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. ENWW Horizontal lines at the end of a cut sheet print 149