Hi pm4927,
Although there is no full feature software and driver from HP, you can still scan. Click on the link below, look in the frequently asked questions section and click on How do I Scan with the driver from Apple Software Updates.
OS X v10.9 Mavericks: Installing and Using the Printer on a Mac
You will find there are 3 methods to scan, and the instructions to use these methods. If you would like further assistance, fell free to post back. We are here to help.