SATO CL4NX Programming Reference Manual page 76

X21 font character set
Basic size is 17 x 17 dots (width x height)
The print sample shown above is issued with a head density of 8 dots/mm and an enlargement ratio
of 2 (vertical/horizontal).
The data from 00 (H) to 1F (H) are control codes and you cannot use them.
Parent topic Font command
74