I just inherited a Casio DR-T220 thermal printer (calculator). Unfortunately there was no instruction manual. I figured out how to set the time after putting in a new battery and it seems to work fine. But I can't get it to print on the paper adding machine roll. I don't see an ink roller and I think I threaded the paper properly. I really like the calculator and would like to get a copy of the manual and at the very least fine out how to get it to print.