First let me tell you   where I am now. My requirement is to print a variable length  Invoice from Android device.  I have done it through “Line print” Mode .  I have  made a string(printbill) and passed to the printer connection . below is the code.
 
String printbill = padRight("Invoice(Page No :1)", 22) + padRight("Invoice No: " + appPrefs.getData("Invoice_number"), 22) + padRight("Date : " + mydate, 22) + "\n" + padRight(""+appPrefs.getData("curr_outlet_number"), 66)+"\n" +padRight(""+appPrefs.getData("curr_outlet_ename"), 66)+"\n" + "------------------------------------------------------------------\n" + padRight("SNo.", 4) + padRight("Item Desc", 16) + padRight("Pack", 9) + padRight("Csprice", 9) + padRight("CS", 4) + padRight("OT", 4) + padRight("PC", 4) + padRight("Discpro", 8) + padRight("Value", 8) + "\n" + "------------------------------------------------------------------\n";
 
     String cpclConfigLabel = "! U1 setvar \"device.languages\" \"line_print\"\r\n" //                + "! U1 SETLP 5 0 30\r\n" + "! U1 LMARGIN 0\r\n" + printbill + "\r\n"; try { configLabel = cpclConfigLabel.getBytes("US-ASCII");byte[] configLabel = getConfigLabel(); conn.write(configLabel); } I am successful in printing the Invoice. Please check  the below  Image  to view the invoice printed from my Android Device.   My requirement is to print Arabic along with this invoice as shown in the below Image . Below each item there is Arabic description also . How I can implement this in Android. ?