PDF NPWPD

public function print_card($employee_id)
    {
        $detail = $this->employee_m->select_by_id($employee_id)->row();
        $pdf    = new TCPDF(PDF_PAGE_ORIENTATION, PDF_UNIT, PDF_PAGE_FORMAT, true, 'UTF-8', false);
        $pdf->SetTitle('Cetak Kartu NPWPD');
        $pdf->setPrintHeader(false);
        $pdf->setPrintFooter(false);
        $pdf->setFontSubsetting(true);
        $pdf->SetDefaultMonospacedFont(PDF_FONT_MONOSPACED);
        $pdf->setImageScale(PDF_IMAGE_SCALE_RATIO);
        $pdf->SetMargins(3.0, 25, 3.0); // left = 0.5 cm, top = 25 cm, right = 2.5cm
        $pdf->SetFooterMargin(1.5); // the bottom margin has to be set with SetFooterMargin
        $pdf->SetAutoPageBreak(true, 0);
        // set some language-dependent strings (optional)
        if (@file_exists(dirname(__FILE__) . '/lang/eng.php')) {
            require_once dirname(__FILE__) . '/lang/eng.php';
            $pdf->setLanguageArray($l);
        }
        $pdf->SetFont('helvetica', '', 10, '', true);
        $pagelayout = array(54, 85);
        $pdf->AddPage('L', $pagelayout);
        $style = array(
            'position'     => '',
            'align'        => 'L',
            'stretch'      => false,
            'fitwidth'     => true,
            'cellfitalign' => '',
            'border'       => false,
            'hpadding'     => 'auto',
            'vpadding'     => 'auto',
            'fgcolor'      => array(0, 0, 0),
            'bgcolor'      => false,
            'text'         => false,
            'font'         => 'helvetica',
            'fontsize'     => 8,
            'stretchtext'  => 3,
        );

        $pdf->Cell(0, 0, $detail->employee_npwpd, 0, 1); // NPWPD
        $pdf->Cell(0, 0, $detail->employee_name, 0, 1); // Nama
        $pdf->Cell(0, 0, $detail->employee_address, 0, 1); // Alamat
        $pdf->write1DBarcode($detail->employee_npwpd, 'C39', '', '', '', 12, 0.4, $style, 'N');

        $time        = time();
        $filename    = 'Kartu_NPWPD_' . $detail->employee_npwpd . '_' . $time;
        $pdfFilePath = FCPATH . "download/$filename.pdf";
        $pdf->Output($pdfFilePath, 'F');
        header("Content-type: application/pdf");
        header("Content-Length:" . filesize($pdfFilePath));
        readfile($pdfFilePath);
        exit;
}