Procedure for changing security permissions for PDF files (classic)
Set a document password to protect and encrypt a PDF file. A document password cannot be the same as the master password.
Only users who have the password can open and decrypt the PDF file.
You cannot reset or change a file's restriction settings without the master password. Write down the master password and keep it secure.
Press [Send File Type / Name].
Press [PDF].
If necessary, select [High Compression PDF].
Press [Security Settings].
Press the [Permissions] tab.
In [Master Password], press [Set].
In [Password], press [Enter].
Enter a password, and then press [OK].
Master passwords can contain up to 32 characters.
The password entered here will be required to change the security settings of the PDF file.
Enter the password again to confirm it, and then press [OK].
Select the security permission setting.
You can specify the following security settings:
Print permission: [Prohibit], [Allow], or [Low Resolution Only]
Editing permission: [Prohibit] or [Allow]
Copying or extracting content permission: [Prohibit] or [Allow]
Press [OK] twice.
If [40 bit RC4] is selected as the PDF encryption level, you cannot select [Low Resolution Only] as the print permission.