$cell6size = 20;
 $pdf->SetDrawColor($black, $black, $black);
 $pdf->setXY($cellstart, $ypos);
 $pdf->Cell($cell1size, $cell_height, 'Pos.', 1, 0, 'C');
 $pdf->Cell($cell2size, $cell_height, 'Artikelnummer', 1, 0, 'C');
 $pdf->Cell($cell3size, $cell_height, 'Artikelbezeichnung', 1, 0, 'C');
 $pdf->Cell($cell4size, $cell_height, 'Größe', 1, 0, 'C');
 $pdf->Cell($cell5size, $cell_height, 'Menge', 1, 0, 'C');
 $pdf->Cell($cell6size, $cell_height, 'Kennziffer', 1, 1, 'C');
 $n = 0;
 $firstpage = true;
 $pdf->AliasNbPages();
 foreach ($items as $item) {
     //            for($i=1;$i<=5;$i++){
     if ($ypos >= 180 && $pdf->payment_type != strtoupper(PAYMENT_METHOD_PREPAYMENT) || $ypos >= 260 && $pdf->payment_type == strtoupper(PAYMENT_METHOD_PREPAYMENT)) {
         $pdf->SetLineWidth(0.2);
         $firstpage = false;
         $pdf->AddPage();
         $ypos = 10;
         $return_code_ypos = 0;
         $pdf->setX($cellstart);
         $pdf->SetDrawColor($black, $black, $black);
         $pdf->SetTextColor($black, $black, $black);
         $pdf->setFont('Arial', '', '10');
         $pdf->Cell($cell1size, $cell_height, 'Pos.', 1, 0, 'C');
         $pdf->Cell($cell2size, $cell_height, 'Artikelnummer', 1, 0, 'C');
         $pdf->Cell($cell3size, $cell_height, 'Artikelbezeichnung', 1, 0, 'C');
         $pdf->Cell($cell4size, $cell_height, 'Größe', 1, 0, 'C');
         $pdf->Cell($cell5size, $cell_height, 'Menge', 1, 0, 'C');
         $pdf->Cell($cell6size, $cell_height, 'Kennziffer', 1, 1, 'C');
     }