[Koha] problems with the patron card creation (non-latin characters)

Dear friends, I am trying to create cards for our patrons. Yet, when I export the batch instead of the 'names' and 'surnames' some strange characters are retrieved.  For example, ---- Name: Ô±Õ¢Ö€Õ¡Õ°Õ¡Õ´ÕμÕ¡Õ¶ Ô¶Õ¾Õ¡Ö€Õ© ÕŽÕ¡Õ¦Õ£Õ¥Õ¶Õ« ---- Maybe this is because the language is Armenian (a non-Latin script)? With the English names everything works fine. This is a very important issue for our library. Any ideas how to solve the problem? Thanks in advance, Haik.