HP Officejet 350 All-in-One Printer - Manual (Page 116)

Scanning
Using the AutoPrompt is the easiest and quickest way to scan
documents to your PC, although you can also use Eclipse Fax SE to
do it.
Note, for high-resolution or color scanning, a more powerful scanner
like the HP ScanJet is recommended.
Scanning using the AutoPrompt
1. Load the document (face-down) into the loading tray of your HP
OfficeJet; the AutoPrompt immediately displays on your PC screen.
2. Press the Scan button, the Scan Options dialog box displays.