Epson PP-7000II User Manual page 40

If any undefined code (<00> to <1F>) or an undefined
<ESC>, <FS>, or <GS> command sequence beyond these tables
is received, the code or the sequence of codes will be discarded.
(However, when image print data, character registration data, or
command parameters are received, they are handled as ordinary
data.)
The user may visit our web at http://www.posiflex.com.tw or
http://www.posiflex.com for a view of the fonts in the code pages
and character sets.
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