A:
Ok, Gacky, have you tried unchecking the 'collated' and 'duplex printing' check boxes? Additionally, If your printing from your iPad, you might have to change the print settings in the iPad print dialogue box, as well as, the HP print dialogue box. Best standard practice is to set all your printer dialogues or page set-ups as you would like them 8 times out of 10. Then, for the special occasions that you are going to print color or on photo paper, make adjustments then.
Good Luck
-http://www.dummies.com/how-to/content/how-to-print-from-your-ipad.html