I have a HP Deskjet F380 All-in-one (Scanner, Printer and Photocopier). Well, the drivers for Mac, from the disk of installation and configuration that comes with the HP, they bring a plugin for Photoshop, but I never knew that until my husband asked me why the scanner did not appear in the import menu of Photoshop (I had not had the need to use it, so, never noticed).
So, it is supposed that this plugin should be copied to the folder of Plugins of Photoshop:But when I restarted Photoshop, never appeared:
The reason, then I came to know, is that the plugin of HP is not compatible with the Adobe CS (Creative Suite). It was hard to find the answer but Google always helps me. Anyway, provided that you want to scan directly to Photoshop from the HP All-in-one, you can open the HP Scan Pro (directly) or the Devices Administrator and select "Scan an image", and then in the window that appears after that, select "Tiff to Photoshop" (to have open Photoshop or not, works anyway).
Then, being in Photoshop, you can save the image in the format that's more convenient for you, and in a different location to the default location of the scanner.
And a tip for the ones that want to scan their photos directly to iPhoto from the HP Scan Pro (Jpeg to iPhoto): you should have iPhoto open (idle) so that the importing can occur. If iPhoto is closed, it opens, but the scanned photo never appears.