Security
8-2 ADVANCED OPERATION GUIDE
Security Kit Functions
The Security Kit enables overwriting and encryption.
Overwriting
Multi function printers (MFPs) temporarily store the data of scanned
original, print jobs as well as other data stored by users in the hard disk,
from which the data is output for printing. As the data storage area used for
such data remains in the hard disk until the said area is overwritten by other
data, the stored data might be restored by a certain tool for unwanted use.
The Security Kit erases and overwrites (hereinafter collectively referred to
as overwrite(s)) the unwanted data storage area used for the output data
or deleted data so as not to be restored.
No special procedures are required for overwriting, which will be
automatically performed.
CAUTION: Canceling the job immediately starts overwriting the data that
was stored in the hard disk.
Overwrite Methods
There are two overwrite methods, which can be switched at any time.
Once Overwrite Method
Overwrite 0 on a target storage area of the hard disk (for overwriting) or
entire hard disk (for system initialization) to disable data restoration.
3-time Overwrite Method (default)
Overwrite random pattern twice and then overwrite 0 on the same target
storage area of the hard disk as mentioned above to disable data
restoration. This method with its higher security makes the data restoration
much more difficult even by a sophisticated restoration tool than Once
Overwrite Method.
It may take more time than Once Overwrite Method to process a larger
amount of data.
Encryption
MFPs store the data of scanned original and other data stored by users in
the hard disk. It means the data could be leaked or tampered with if the
hard disk is stolen.
Instructions for General Users (for Both General Users and Administrators)
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