Sorry again for my bad english
?Use Google or Bing translate to convert your question story from your own language to the English language
I'm not sure I understand exactly what you want and different solutions are possible. Your printer will eventually give you a strip of cut paper that can contain a maximum of a number of lines.
The ESC/POS control codes have a "Set Relative Print Position" function that allows you to set the relative print position per unit moving horizontally or vertically. If you choose this option, you must keep track of where the printer head is located by calculating the character height and width. The line height depends on the character size.
You could take the number of corrected line height = character height X lines used and either go down or up by a number of lines or set the print position to (nL+nHx256) point from the current position. You need to know what is the absolute position.
By the way, you can find the supported ESC/POS character code description at
ESC/POS character codes.
edit: It may be much easier to create an image and print it.