Clicking print button will raise the print popup window from the
browser. That's the general behavior. I can not find a perfect
resolution for your answer, but try following script, you will be able
to customize for need. This works for IE but not other
browser.
http://centrilla.blogspot.com/2010/12/send-html-page-directly-to-default.html
Uncomment the sup print() procedure before executing.