public function encabezado($titulo = null, $entidad = null, $fecha = null)
{
$config = sfTCPDFPluginConfigHandler::loadConfig('orange');
// pdf object
$pdf = new sfTCPDF();
$pdf->setPageFormat('LETTER');
$pdf->SetFontSize(8);
$pdf->SetTextColor(255, 255, 255, 0);
$pdf->SetDrawColor(192, 192, 192, 0);
//$pdf->SetCellPadding(30);
$pdf->SetMargins(PDF_MARGIN_LEFT, PDF_MARGIN_TOP, PDF_MARGIN_RIGHT);
$pdf->setHeaderFont(array(PDF_FONT_NAME_MAIN, '', 8));
$pdf->SetHeaderData(PDF_HEADER_LOGO, PDF_HEADER_LOGO_WIDTH, 'Generado por:' . $entidad, 'Reporte de Pago' . "\n" . $fecha);
$pdf->setFooterFont(array(PDF_FONT_NAME_DATA, '', 8));
$pdf->SetHeaderMargin(PDF_MARGIN_HEADER);
$pdf->SetFooterMargin(PDF_MARGIN_FOOTER);
$pdf->SetFontSize(9.5);
$pdf->setPageFormat('A4');
return $pdf;
}