The black colour can be slightly different (slightly less deep) from the original. This has to do with the ink, but does not harm the printer.
If the black really looks grey, it can also be due to the printer settings:
- Check the paper settings. This should be set to “plain paper”. If the paper set is to “Glossy” the print turns to grey. To change the setting, click on Control Panel> Devices and Printers> Select the printer and click the right button> Printing Preferences> Tab: Paper / Quality> Media: Plain paper
- If you are using the Epson Status Monitor software, it can also be that the printing settings is set as “draft” copy. You will see the following options in Printer Properties: