Auto Erase Memory
A print data sent from a printer driver is temporarily stored on the printer's hard disk. Even after the job is
completed, it remains in the hard disk as temporary data. Auto Erase Memory erases the temporary
data on the hard disk by writing over it.
Overwriting starts automatically once the job is completed.
The printer function takes priority over the Auto Erase Memory function. If a print job is in progress,
overwriting will only be done after the job is completed.
Methods of overwriting
You can select a method of overwriting from the following:
•
NSA
Temporary data is overwritten twice with random numbers and once with zeros.
• DoD
Temporary data is overwritten with a fixed value, the fixed value's complement, and random
numbers. When completed, the overwriting is then verified.
• Random Numbers
Temporary data is overwritten multiple times with random numbers. The number of overwrites can
be selected from 1 to 9.
• The default method for overwriting is "Random Numbers", and the default number of overwrites is
3.
•
NSA stands for "National Security Agency", U.S.A.
• DoD stands for "Department of Defense", U.S.A.
Using Auto Erase Memory
• When Auto Erase Memory is set to [On], temporary data that remained on the hard disk when
Auto Erase Memory was set to [Off] might not be overwritten.
•
If the main power switch is turned off before Auto Erase Memory is completed, overwriting will stop
and data will be left on the hard disk.
• Do not stop the overwrite mid-process. Doing so will damage the hard disk.
• If the main power switch is turned off before Auto Erase Memory is completed, overwriting will
continue once the main power switch is turned back on.
Deleting Data on the Hard Disk
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