Printing only part of the jsf primefaces page

Hi,

I have a print button as below

  <p:commandButton id="printit" value="Print" type="button" icon="icn-print">
                    <p:printer target=":topForm:data" />
                </p:commandButton>

Select allOpen in new window

when i click print button only top half of the page is getting printed and bottom half is pushed to next page. How do i fix this issue.

please advise
Any links resources ideas highly appreciated. Thanks in advance