CUPS printer and class names may contain any printable character, except space, tab, "/", or "#".
Also important to note: printer and class names are *not* case- sensitive. "myprinter" and "mYpRiNtEr" are exactly the same printer for CUPS! -- [Dapper] Can't use spaces when specifying printer name https://launchpad.net/bugs/44459 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
