Erase All Memory; Overwrite Method - Ricoh B064 SERIES Service Manual

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DATA OVERWRITE SECURITY UNIT (B735)

1.8.2 ERASE ALL MEMORY

Users can erase all the data on the hard disk by writing over it. This is useful

before you remove or dispose of the machine. The following items can be erased

with this function.

• Documents stored by the user in the Document Server with the Copier, Printer or

Scanner function

• Information registered in the Address Book

• User codes and the counters under each user code

• Network settings

• User stamps

• Printer fonts downloaded by the user

In the DOS option, customers can select one of the three overwrite methods for

"Auto Erase Memory" and "Erase All Memory":

• NSA (National Security Agency, U.S.A) Standard (Default)

Temporary data is overwritten twice with random numbers and once with zeros.

• DoD (Department of Defense, U.S.A) Standard

Temporary data is overwritten with a fixed value, the complement of the fixed

value, and random numbers, followed by verification.

• Random Data Overwrite

Temporary data is overwritten multiple times with random numbers. The number

of overwrites can be set in the range from 1 to 9 times. The default is three times.

B659/B581/B596/B582/G377/B609/B735

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