Brother PT-9700PC - Manual (Page 49)

49
characters
* Note: The number of characters that can be entered (listed above) is for an error
correction level at a high-density level of L 7%. If the standard level or higher is set, the
number of characters that can be entered may decrease.
In addition, even if the characters are entered with a high-density level (L) specified, the
number of characters that can be entered may decrease due to compression.
③ \\\: End of bar code
There must be three backslashes at the end of 2D bar codes.