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GS A m n
[Function] Correcting the position of black mark top position
[Code] <1D>H<41>H<m> <n>
[Range] m=0, 0
n 255
[Outline] This command sets the top position of the black mark with the
amount of correction set for the default position.
m0 Direction
0 Corrects in the forward direction.
[Caution] • This command is valid only when selecting the black mark.
• This command is ignored in other than the time just after a
paper feed caused by the black mark top position detecting
command (FF, GS FF, GS A) or by the operation of the FEED
switch, and just after setting the top of form at printer power
on.
• If you want to correct the top position in the forward direction,
set the value in consideration of the print length as the printable
area may change after setting the value.
• Use the basic pitch for vertical direction in calculating the
amount of correction. If the calculation has any odd value,
correct it with the minimum pitch of the mechanism with the
rest discarded.
• Correction in the reverse direction is not carried out.
[See Also] FF, GS FF