Scan photos into the Editor using a TWAIN driver
TWAIN is a software driver used for acquiring images captured by certain scanners, digital cameras, and frame grabbers. For your TWAIN device to work with Photoshop Elements, the manufacturer must provide a source manager and TWAIN data source.
Before you can use the scanner to bring images into Photoshop Elements, you must install the TWAIN device and its software, and then restart your computer. (See the documentation provided by your device manufacturer for installation information.)
In the Organizer, choose File > 
Get
Photos And Videos, and choose the device you want to use from the
submenu.
After the image is scanned, it appears in an untitled Photoshop Elements window.
Note: After
pressing the scanning button for the first time on some scanners,
such as the Canon MP960, the scanning progress bar will open behind
Photoshop Elements. You can reduce the Photoshop Elements window
to bring the progress bar forward.