Re: Wireless printing to a HP Color Laserjet 400

I am providing you the link on  documents that has information on your issue. This might help you.

Airprint over a wireless network

http://h20564.www2.hp.com/portal/site/hpsc/public/kb/docDisplay/?docId=c03005639

Android 4.3 (Jelly Bean) and Earlier: How to Use HP's Built-in Print Solution for Android

http://h20564.www2.hp.com/portal/site/hpsc/public/kb/docDisplay/?docId=c03722674

Troubleshoot Airprint issues

http://h20564.www2.hp.com/portal/site/hpsc/public/kb/docDisplay/?docId=c03563697