Here is a vintage EA-720R Sharp Ink Roller also has the number NROLR1013CCZZ on package.  From an estate sale box of office items.  Age unkown to me.  I think it is for a caculator.   Package is unopened and a bit dusty (just on outside of package).  Package marked MADE IN JAPAN.  Thanks!
If you need additional photos or have any questions, please let me know.  I'll be happy to try to help.
From my non smoking home.
Check my stuff for more beautiful items that catch my eye!  I have a pretty eclectic collection of stuff and add new items almost daily.