Aficio Pro C550EX, Manual

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To protect the data from unauthorized reading, you can also encrypt the data in the Address Book.
For details about protecting registered information in the Address Book, see "Protecting the Address
Book".
Encrypting Data on the Hard Disk
Encrypt data stored on the hard disk to prevent information leakage. The HDD Encryption Unit is
required for hard disk data encryption. For details about encrypting data on the hard disk, see
"Encrypting Data on the Hard Disk".
Overwriting the Data on the Hard Disk
Before disposing of the machine, make sure all data on the hard disk is deleted.
To overwrite the hard disk data, the optional DataOverwriteSecurity Unit is required. For details about
overwriting the data on the hard disk, see "Deleting Data on the Hard Disk".
• p.67 "Specifying Access Permission for Stored Files"
• p.74 "Protecting the Address Book"
• p.77 "Encrypting Data on the Hard Disk"
• p.87 "Deleting Data on the Hard Disk"
Limiting and Controlling Access
Preventing Modification or Deletion of Stored Data
You can allow selected users to access files stored in Document Server.
You can permit selected users who are allowed to access stored files to modify or delete the files. For
details about limiting and controlling access, see "Specifying Access Permission for Stored Files".
Preventing Modification of Machine Settings
The machine settings that can be modified according to the type of administrator account.
Register the administrators so that users cannot change the administrator settings. For details about
preventing modification of machine settings, see "Preventing Modification of Machine Settings".
Limiting Available Functions
To prevent unauthorized operation, you can specify who is allowed to access each of the machine's
functions. For details about limiting available functions for users, see "Limiting Available Functions".
• p.67 "Specifying Access Permission for Stored Files"
• p.95 "Preventing Modification of Machine Settings"
• p.99 "Limiting Available Functions"
1. Getting Started
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