HP 2820 - Manual (Page 145)

Scanning by using optical character recognition (OCR) software
You can use third-party OCR software to import scanned text into your preferred word-
processing program for editing.
Readiris
The device software CD-ROMs include the Readiris OCR program. If you want to use the
Readiris program, install it from the appropriate software CD-ROM, and then follow the
instructions in the online Help.
ENWW Scanning by using optical character recognition (OCR) software 129