FPDF ฐานข้อมูล นำมาแสดงแล้ว แต่ข้อมูล ซ้อนทับกันไม่วนรูป ไม่เรียงลงมา

mysql_select_db($database_conn, $conn);
$query_listcomittee = "SELECT * FROM tb_committee";
$listcomittee = mysql_query($query_listcomittee, $conn) or die(mysql_error());
$row_listcomittee = mysql_fetch_assoc($listcomittee);
$totalRows_listcomittee = mysql_num_rows($listcomittee);

$listcomittee = mysql_query($query_listcomittee, $conn) or die(mysql_error());
$num_rows = mysql_num_rows($listcomittee);
//$countname = $c['committee_id'];
		$i = 0;
		$page = 1;
		while($reg = mysql_fetch_array($listcomittee)) {
		$i++;

			$pdf->SetXY(30,120);
			$pdf->Cell(20,7,iconv( 'UTF-8','cp874',''.changeThaiNumber($i)),0,0,'C');
			//$pdf->Cell(20,7,iconv( 'UTF-8','TIS-620',''.$reg['committee_id']),1,0,'L');
			$pdf->SetXY(45,120);
			$pdf->Cell(50,7,iconv( 'UTF-8','cp874',''.$reg['committee_name']),0,0,'L' );	
			$pdf->Ln();
	
		
}
}