HP Photosmart C4780 not being seen by my iMac
I just bought a new iMac 21.5" and it is installed with the latest OS X 10.9.2. I backed up my old Mac and migrated everything to my new iMac. Everything execpt for my HP software was moved over. When I connected my printer (HP Photosmart C4780) to my iMac using the USB port and went to printers and scanners it did not appear. I can't install with a disc because I no longer have the disc. I went to the hp website and followed the instructions but it only asks that I update the software on my Mac and it should appear. The software on my Mac is up to date and still no printer appears.
HOw do I install the software for this printer so that my iMac recognizes it?
iMac, OS X Mavericks (10.9.2)