Why does bluetooth quick printer script stop the page execution from completing

Question

The following code prints to the bluetooth printer via the sendToQuickPrinter function perfectly, but the page does not run the PHP script below it. When the printer completes printing, I need the page to execute the php script to call a different page. Thanks

<script>
function sendToQuickPrinter(){
var text =
"<CENTER><MEDIUM2><?php echo $shop_name ?><BR>" +
"<CENTER><?php echo $display_date ?>        <?php echo $display_time ? 
<BR><BR>" +
"Description          Price<BR>" +
"<?php $i=0;while($i < $print_count){$i=$i+1; echo 
$p_name_array[$i].';; ;;'.$transaction_qty_array[$i].' @ 
'.number_format($p_price_array[$i],2).'<BR>';} ?>" +
"<BR>" +
"<CENTER>Sub-total      $<?php echo number_format($subtotal,2) ?><BR>" 
+
"<CENTER>Tax            $<?php echo number_format($subtax,2) ?><BR>" +
"<CENTER>Total          $<?php echo number_format($item_total,2) ?> 
<BR>" +
"<BR>" +
"<CENTER>Thank you for shopping with us, we appreciate your business! 
<BR>" +
"<CENTER><MEDIUM2> Have a great day!<BR>" +
"<BR>" +
"<CUT>" +
"DRAWER";
var textEncoded = encodeURI(text);
window.location.href="quickprinter://"+textEncoded;
}
sendToQuickPrinter();
</script>

<?php
$path = "cart.php";

function success_return($path, $shop_name, $longitude, $latitude) {  
    include($path);
}  

success_return($path, $shop_name, $longitude, $latitude);
exit;
?>