I'd like to print bitmap to thermal printer via Esc/Pos.
I'm using C# but I'm looking for a correct command sequence to do that independently from the development.
I tried this example with ESC @, ESC * command
Printing a Bit map image to pos printer via comport in C#
But it not work correctly and the print (incorrect) is too slowly.
I saw there are GS command but I haven't found documentation for develop something that work...