To install ribbons:

1. Open the Godex Printer by pushing in on the circles on either sides of the printer and pulling up.
2. Find the two green buttons on the ribbon supply. Push both of them in at the same time. This should release the ribbon supply.
3. Lift up the ribbon supply to reveal the ribbon feed.
4. The ribbon is spring loaded. Find the two ribbon holders; one is above the ribbon feed and one is underneath.
5. Push the ribbon holders to the left towards the green rewind wheels to remove the two bars that will hold the ribbon in place. The bar that is located underneath the ribbon feed is used to hold the unused ribbon and the bar on top of the ribbon feed holds the used ribbon.
6. Once you have the two bars out, place the new roll of ribbon onto the bars which will hold them in place.
7. Make sure that the ribbon is put on the bars correctly:  The ink side of the ribbon should be facing down and away from the roll.  
   NOTE:  The best way to find out which side is the side with the ink is to take some scotch tape and put it on each side and then peel it back off.  Whichever side peels off with black ink of it, is the side with the ink on it.
    
8. After you have placed the ribbon on the bars correctly, put the bars that have the ribbon on them back where they came from. The unused ribbon roll should be underneath the ribbon feed and the used ribbon roll should be on top.    
9. Close the ribbon supply and use the green wheel on the left side of the ribbon to retighten the ribbon feed.
10. Close the lid to the printer.