1. Ensure that the document settings are set to print using the highest quality option.

2. Check to see if the appropriate ink or toner cartridge is installed correctly.

3. Clean the cartridges and printer nozzles using some cotton swab and a cleaning solvent such as water-alcohol solution.

4. Update your printer's drivers if needed.

5. If the above solutions don’t work, try to adjust the printer color settings using the printer configuration utility.