EPL2 - Load image into to Zebra printer

[Jeppe Sommer]

Hello,

I an trying to load a graphic image directly into a Zebra desktop printer (TLP 2844). To do that I am going to use the language called EPL2, which is command syntax language.

Below you see the command syntax:

Syntax: GWp1,p2,p3,p4DATA

Parameters p1 = Horizontal start position (X) in dots.

p2 = Vertical start position (Y) in dots.

p3 = Width of graphic in bytes. Eight (8) dots = One (1) byte of data

p4 = Length of graphic in dots (or print lines).

DATA = Raw binary data without graphic file
formatting. Data must be in bytes. Multiply
the width in bytes (p3) by the number
of print lines (p4) for the total
amount of graphic data. The printer automatically
calculates the exact size of
the data block based upon this formula.


My questions are:

1) How to we get the width of graphic in bytes?

java.awt.Image img = new javax.swing.ImageIcon("companylogo.gif").getImage();
int width = img.getWidth(null);  //width in pixel
int height = img.getHeight(null); //height in pixel

2) How to we get the height of graphic in dots?

3) We need to send raw binary data in bytes as the DATA parameter. Do we have to convert it into a string, like below:

byte [] graphic = getBytesFromFile( new java.io.File("companylogo.gif") );
String s_graphic = new String( graphic );

Thanks in advance