You can use http://www.w3schools.com/css/css_mediatypes.asp.
W3C (Media types) -> http://www.w3.org/TR/CSS2/media.html
Question
I have a question, is there some free libraries for client-side print from client browser which supports IE 6+ and PHP 5.2.9?
Because I was searching something like this, but found nothing=(
Solution
You can use http://www.w3schools.com/css/css_mediatypes.asp.
W3C (Media types) -> http://www.w3.org/TR/CSS2/media.html