How to print field type image in views-view-fields--xyz--block.tpl.php
Use field_view_field.

E.g.

$node = node_load($node_id);
print drupal_render(field_view_field('node', $node, 'field_your_field_name'));


Or if you don't want the label with the field then:

print drupal_render(field_view_field('node', $node, 'field_your_field_name', array('label' =&gt; 'hidden')))