HP Officejet Pro 8500A Plus printing issues

I have been having two new issues suddenly (within the past 2 weeks) with my HP Officejet Pro 8500A Plus. I am trying to print from my iMac 27 inch running OS.X 10.8.4 Both the mac and the printer are connected to a wireless network via an Xfinity Wireless Gateway. I have just replaced the ink cartridges in the printer but am unable to print black & white. In fact everything is comming out kinda pink. I have posted on HP's support site and was told to

Download and install this: http://support.apple.com/kb/DL907

Restart your Mac.

Reset the printing system:

- Go to System Preferences > Print & Scan
- Right (or control) click in the rectangle listing your printers and select Reset Printing System.
WARNING - this will delete ALL of your printers!
- Select the plus sign to re-add a printer. Select the Defualt tab on the top of the window. Look for the printer, select it and then next to the "Use" pulldown, select the printer model (not AirPrint). Wait until the "Add" button becomes available. Click it.

Having done that initially my problem was solved. But now I'm having the problem again. I went through the above steps again, but still not able to print. Are there any suggestions for a fix. Is anyone else seen this issue? Is there a particular printer manufacturer that works well with Apple. Because at this point I have a large paperweight that is of no use to me!