HP Officejet Pro L7400 User Guide - Page 77
Wrong colors are printing, Printout shows bleeding colors, Colors do not line up properly
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Wrong colors are printing Check the print settings Make sure Print in Grayscale is not selected in the printer driver. For information on changing this setting, see Change print settings. Check the printheads Print the print quality diagnostic page on a clean sheet of white paper. Evaluate any problem areas, and perform the recommended actions. For more information, see Print the print quality diagnostic page. Printout shows bleeding colors Check the ink cartridges Make sure ink cartridges have not been tampered with. Refilling processes and the use of incompatible inks can disrupt the intricate printing system and result in reduced print quality and damage to the device or printhead. HP does not guarantee or support refilled ink cartridges. For ordering information, see HP supplies and accessories. Check the printheads Print the print quality diagnostic page on a clean sheet of white paper. Evaluate any problem areas, and perform the recommended actions. For more information, see Print the print quality diagnostic page. Colors do not line up properly Check the printheads Print the print quality diagnostic page on a clean sheet of white paper. Evaluate any problem areas, and perform the recommended actions. For more information, see Print the print quality diagnostic page. Check the graphics placement Use the zoom or print preview feature of your software to check for gaps in the placement of graphics on the page. Lines or dots are missing from text or graphics Check the printheads Print the print quality diagnostic page on a clean sheet of white paper. Evaluate any problem areas, and perform the recommended actions. For more information, see Print the print quality diagnostic page. Solve paper-feed problems For information on resolving jams, see Clear a jam in the device. Solve paper-feed problems 73