9445 Equipment Manual
5.Guide the edge of the ribbon around the ribbon guide post.
6.Place the cassette on the ribbon spools and push it against the back wall. The spool lock will drop out.
Upper
Ribbon
Spool
Ribbon 
Guide
Post
Printhead
Lever
7.Turn the upper ribbon spool clockwise until the ribbon is tight. Make sure the ribbon is not wrinkled or bunched.
8.Slide the supply up to the feed mark. Make sure the ribbon is correctly positioned.
9.While holding the cassette in place, turn the printhead lever to the right to lock the printhead in place. Do not force the lever.
