Fujitsu Ricoh Fujitsu N7100E Network Image Scanner - Manual (Page 282)

5.8 Setting the Scan Options
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5.8.7 Setting a PDF Password
When the file format is [PDF], PDF files can be locked with a user-specified password.
1. Select [PDF Password] under [Save] on the scan settings window.
 The [PDF Password] window appears.
2. Select [PDF Password] under [Save] on the scan settings window.
3. Press the [OK] button.
 The information entered is set.
ATTENTION
The password will need to be entered every time the password-protected PDF file is opened.
Do not forget or lose this password.