Brother RJ-4030 - Manual (Page 29)

Raster Command Reference
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4. Printing Command Details
ESC i d Specify margin amount (feed amount)
ASCII: ESC i d {n1} {n2}
Hexadecimal: 1B 69 64 {n1} {n2}
Description
 Specifies the amount of the margins.
 Margin amount (dots)=n1+n2*256
 With die-cut labels, the margin amount at the ends of the printed area is 0.
(a) Continuous length tape
Print area
Margin amount
Tape Paper
Cut line
(b) Die-cut labels
Margin amount
(only
“0” is available)
Print area
Label Paper
Cut line