Can't Use my HP Scanjet 4850 since updating to OSX 10.9.1
My scanner used to work perfectly, now since updating to newest OSX I cannot use the HP Scanjet software. It will scan, but when the image is saved, all it saves is a page of alternating black and white lines. I have tried to update the drivers from HP but they do not exist for 10.9.1 (only up to 10.6), and my Mac says they are from an unidentified developer and won't let them be installed anyway. I have seen where the new OS has everything built in, but when I go to system preferences > Printers and scanners - it is not listed, nor is it recognized with image capture. Any help would be much appreciated.
iMac, OS X Mavericks (10.9.1)