Why I can't print dashed lines?

Problem
This is my setting in iReport. The line had been set as dashed line.

And you can see the dashed line in chrome pdf viewer

But as I print this pdf file, I cannot see the dashed line!

Root Cause
It may result from some problem in Chrome PDF Viewer.

Solution
Go to chrome://plugins/
 Disable Chrome PDF Viewer and Enable Adboe Reader

Then click the print button.

See...the dashed line had shown in my paper