I ll guide you how to replicate this issue:
Create a user control. In this add a table (html) with some data on it, for example:
<div style class="printdiv">
In CSS, you have
Name Location Age
A XYZ 20
B PQR 25
... and so on, say 5 rows you have.
Now the reqmt is to print this table 4 times on seperate pages in a pdf document. To do this, create an aspx page and add a place holder container, in the code behind, add this user control 5 times to it. Make sure you have content disposition to print it over pdf.
Run this and you would see that you get a blank page towards the end of the pdf.