How to print fields manually
Try with this:

&lt;?php print render($content['your_field_name']); ?&gt;


This should print the field you want.

Change 'your_field_name' with machine name of the desired field.

You can install and enable Devel module and add this:

&lt;?php dsm($node); ?&gt;
&lt;?php dsm($content); ?&gt;


in your print.tpl.php file. You will see all $node and content fields.

UPDATE

Also, you can add this function in your template.php file:

/**
  * Renders the content of the print page using the theme api.
  */
function THEME_preprocess_print(&amp;$vars, $hook) {

// Global node.
$node = $vars['node'];

// Create a var and render using field_view_value
$vars['any_variable'] = field_view_value('node', $node, 'your_field_name', $node-&gt;your_field_name[$node-&gt;language][0]);

}


Replace THEME with your theme name, any_variable with any name you want for this variable and your_field_name with machine name of your field.

After this you can render your field in print.tpl.php file like this:

&lt;?php print render($any_variable); ?&gt;


Again, change any_variable with the name you choose for this variable in function from template.php file.