OS X V10.7 Lion :: HP CM1312nfi Printer - Scan Not Working & Printer Pausing?

I have an iMac 27" (intel 3.4 GHz, Intel core i7, and 16 GB memroy) purchased a few months ago. It is running the latest version of Lion 10.7.4 I run this computer on our network along with a iMac 24" 3.5years old and a Macbook Pro 2.5year old. 

This computer seems to have a beef with the Hewlett-Packard printer (HP colour laser jet CM1312nfi MFP) which I have had for about 3 years. I can not get the new computer to work with the printer properly. It allows printing but it pauses all the time when you resume the print it starts printing from the begining of the document againIt will pause any prints sent to it across the network after the first 1 or 2 pages are printedIt won't allow scanning at allWhen you launch the scanner it takes forever to connect (3 - 4 mins)If you try to scan using any of the scan options (if it loads the devise) it then states it can not connect to the device, or all the scan buttons apear but greyed out.This is odd as it will still allow printing?? 

Also, all the other PC's have the same version of Lion 10.7.4 and have the latest HP Driver installed (these were released on the 14 Dec 2011). Other useful infoThe scanner is hard wired to the 27" machineYou can only use the printer if one scanner is hard wired as it does not have wirless capacity.I have uninstalled and installed the software more times than i can count trying all different trouble shooting etcI can only conclued that there is somthing the 27" machine is doing to prevent the scnanner registering properlyNone of the other computers can use the scanner correctly either. As you can only scan a page at a time using the "Scan" button. If I wish to scan multiple pages on with either of the other computers I need to use the "scan to folder" button.