POS58打印机上的Java PrinterJob打印垃圾字符

Question

我在Java中使用PrinterService和PrinterJob在POS58系列打印机中进行打印；有时它开始将标题垃圾字符打印为以下图像：

以下代码：

public class BillPrintableIngreso implements Printable {

    @Override
    public int print(Graphics graphics, PageFormat pageFormat, int pageIndex) throws PrinterException {
        int result = NO_SUCH_PAGE; 
        if (pageIndex == 0) {
            Graphics2D g2d = (Graphics2D) graphics;
            double width = pageFormat.getImageableWidth();                    
            g2d.translate((int) pageFormat.getImageableX(),(int) pageFormat.getImageableY()); 
            FontMetrics metrics=g2d.getFontMetrics(new Font("Arial",Font.BOLD,7));
            int idLength=metrics.stringWidth("000");
            int amtLength=metrics.stringWidth("000000");
            int qtyLength=metrics.stringWidth("00000");
            int priceLength=metrics.stringWidth("000000");
            int prodLength=(int)width - idLength - amtLength - qtyLength - priceLength-17;
            int productPosition = 0;
            int discountPosition= prodLength+5;
            int pricePosition = discountPosition +idLength+10;
            int qtyPosition=pricePosition + priceLength + 4;
            int amtPosition=qtyPosition + qtyLength;
            /*Draw Header*/
            int y=20;
            int yShift = 10;
            int headerRectHeight=15;
            int headerRectHeighta=40;

            g2d.setFont(new Font("Monospaced",Font.BOLD,9));
            g2d.drawString("  Conjunto Residencial  ",0,y);y+=yShift;
            g2d.drawString("  Ciudad Tintal Casas   ",0,y);y+=yShift;
            g2d.drawString("    Calle 8a # 92-71    ",0,y);y+=yShift;
            g2d.drawString("   Bogotá Colombia    ",0,y);y+=yShift;
            g2d.drawString("************************",0,y);y+=headerRectHeight;

            g2d.setFont(new Font("Monospaced",Font.BOLD,8));
            g2d.drawString("# Ticket: "+nticket,0,y);y+=yShift;
            g2d.drawString("Placa: "+placa,0,y);y+=yShift;
            g2d.drawString("Nombre: "+nombreConductor,0,y);y+=yShift;
            g2d.drawString("Casa visitada: "+casaVisitada,0,y);y+=yShift;
            g2d.drawString("Ingreso: "+fechaIngreso,0,y);y+=yShift;
            g2d.drawString("\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r",0,y);y+=headerRectHeighta;
            g2d.drawString("- - - - - - - - - - - - - -",0,y);y+=headerRectHeighta;
            result = PAGE_EXISTS;   
        }
        return result;
    } 
}

PrinterService printerService = new PrinterService();
                List <String> printers=printerService.getPrinters();
                if (printers.size()>0){
                    String printer=printers.get(0).toString();
                    loguer("Imprimiendo en: "+printers.get(0).toString());
                    loguer(printer);
                    PrinterJob pj = PrinterJob.getPrinterJob();
                    pj.setPrintable(new BillPrintableIngreso(),getPageFormat(pj));
                    try {
                        pj.print();
                    } catch (PrinterException ex) {
                        loguer(ex.getLocalizedMessage());
                    }
                }else {
                    Dialogs.dialogError("Error", "No hay impresora conectada...", "");

                }

请帮我解决这个问题！

我在Ubuntu 18上使用JAVAFX

最好的问候

Nelson Rodriguez