Brother RJ-4040 - Manual (Page 21)

ESC/P Command Reference
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3. ESC/P Command Limitations
3.3 Print position
The print position is the standard position for printing characters, bitmaps, and barcodes.
There is a horizontal print position and vertical print position, which are the reference points for vertical
position movement and horizontal position movement.
3.3.1 Characters
Characters are arranged with their top edges aligned with the print position.
The baseline of each character is the bottom edge of the character, regardless of size, font, etc.
A
Print position
Baseline position
All characters on a single line are printed with a baseline positions that is the same for each character.
If a single line consists of characters with different heights, the characters are aligned with the baseline of
the tallest character on the line.
A
Print position
A
A
Baseline position
Underlines are drawn 4 dots below the baseline position.
3.3.2 Bitmaps, barcodes and downloaded images
These types of image data are treated in the same way as characters and are printed with the bottom
edge of the image aligned with the baseline.