Epson TM-300A Operator's Manual page 52

[Example] When upside-down character
printing is canceled.
GS E n
[Name] Set head energizing time
<1D>H<45>H<n>
[Format]
O n
[Range]
Sets the head energizing time.
[Description]
Only the lowest bit of
l
When
When
gizing time is longer.)
When the roll paper contains two or more sheets, copy mode
{Notes]
l
(energizing time is set longer) should be selected.
[Default] n = 1
255
n
is valid.
n
= < * * * * * * * 1>B, normal mode is selected.
n
= <* * * * * * * 0>B, copy mode is selected (ener-
46
When upside-down character
printing is selected.