How do i print image title in custom node for image gallery
Create a view of your content type, then in this view select the fields as your content and then select the title and the image. then every image will have its own title. you can also theme it in any way that you want.

you need to output this view in your node page, so simply in your template.php and in hook_preprocess_node function suggest a theme hook for this content type (for example page--node--gallery.tpl.php) and then in the page--node--gallery.tpl.php output the view using views_embed_view("view_name","display").