I am not certain this is what you desire but check out my blog. I have code snippets that may help you. Read the post and you will understand the end result from the snippet. Have a great day and hope it helps!
http://ezwebdesign.wordpress.com/2012/09/14/removing-admin-bar-removing-dashboard-access/
add_filter(‘show_admin_bar’, ‘__return_false’);
@megainfo Great. Where should I add this line? (don’t, please, think what I think you’re thinking)
Thanks.
In functions.php file of your current theme 😛