In this blog  you will get the solution about Epson printer not printing after changing ink  

by just visiting the mentioned link you will get the solution related to problems in some easy steps.

The printer won't operate properly if it's tilted or at an angle. If the ink cartridges are old or low on ink, you may need to replace them. Make sure the yellow tape was removed from the ink cartridge(s) installed in your product. Make sure you're using paper that meets the product's specifications.