Did you shake the ink cartridges gently before installing them?
Shake new cartridges gently before you install them. So that the ink mixes well, periodically shake each ink cartridge 50 times (about 20 seconds) horizontally with a stroke length of around 5 cm (1.97 in.) from each end of the ink cartridge before reinserting it.
Is the media wrinkled?
If the media is wrinkled and comes loose from the platen, colors may be uneven or printing quality may suffer.
Is the printer installed in a level and stable location?
Never install the machine in a location where it is tilted or where it may wobble or experience vibration. Also, make sure that the print heads are not exposed to circulating air. These factors may lead to nozzle clogging or reduced printing quality.
Is the printer being used in a location subject to severe changes in the operating environment?
Large fluctuations in temperature or humidity while printing is in progress may cause the colors to change partway through. When you're performing printing, use the machine in a location where temperature and humidity are stable.