Comandos ESC/POS para Impressora termica

        public static final char[] START = new char[] { 0x1B, '@' };
	public static final char[] CORTAR = new char[] { 0x1B, 'm' };
	private static final byte[] CHAR_SIZE_0 = { 0x1B, 0x21, 0x00 };
	private static final byte[] CHAR_SIZE_1 = { 0x1B, 0x21, 0x01 };
	private static final byte[] CHAR_SIZE_2 = { 0x1B, 0x21, 0x30 };
	private static final byte[] CHAR_SIZE_3 = { 0x1B, 0x21, 0x31 };	
	private static final byte[] AVANCA = { 0x19 };
	private static final byte[] POSESQUEDA = { 0x1B, 'j', '0' };
	private static final byte[] POSCENTRO = { 0x1B, 'j', '1' };
	private static final byte[] POSDIREITA = { 0x1B, 'j', '2' };
	private static final byte[] TABHORIZONTAL = { 0x09 };
	private static final byte[] startTextCondensado = {0x1B, 0x0F };
	private static final byte[] endTextCondensado = { 0x12 };
	private static final byte[] startTextExpandido = { 0x1B, 'W', '1' };
	private static final byte[] endtTextExpandido = { 0x1B, 'W', '0' };
	private static final char[] QRCODE_PREFIX = new char[] { 0x1B, 0x81 };	
	private static final char[] ESPACOHORIZONTAL = new char[] { 0x20 };	
	private static final byte[] SET_LINE_SPACING_24 =   { 0x1B, 0x33, (byte) 24 };
	private static final byte[] SET_LINE_SPACING_30 =   { 0x1B, 0x33, (byte) 30 };	
	private static final byte[] PRINT_AND_FEED_PAPER =  { 0x1B, 0x4A, 0x00 };	
	private static final byte[] REVERSAO =  { 0x10, 0x4D, 0x01 };

	String Ptxt =
	new String (START)+
	new String(CHAR_SIZE_0)+
	new String (POSESQUEDA)+
	new String(textNegrito("Exemplo de texto em negrito"))+
	new String(AVANCA)+
	new String(CORTAR);
		
	// Impressão
	DocFlavor df = DocFlavor.INPUT_STREAM.AUTOSENSE;
	InputStream pis = new ByteArrayInputStream(Ptxt.getBytes());

	Doc d = new SimpleDoc(pis, df, null);
	PrintService P = PrintServiceLookup.lookupDefaultPrintService();		

	if (P != null) {
		DocPrintJob job = P.createPrintJob();
		try {
			job.print(d, null);
		} catch (PrintException e) {
			e.printStackTrace();
		}
	}