The printer has an automatic feature to clean the print head. Usually, there is a lot of ink (Probably melt with dust) in the area where the print head is cleaned

Remove 4 of the 5 torx screws as shown in the picture. As given in a user comment, the top right one serves to join the two pieces of this part.

Assuming the print head is now removed (Not shown on the picture), now gently tip the plastic plate and remove it

If you didn't put gloves yet, it is time to do it !

Now, push the carriage that holds the print head cleaning system (Red arrows)

The carriage that holds the print head cleaning system is now clean (Last picture)