Konica Minolta bizhub C353 Service Manual page 372

Field Service Ver. 3.0 Jan. 2008
(2) Overwrite Temporary Data
• When the image becomes unnecessary, temporary data overwrite function will write
meaningless data over all area where images are stored, and destroy the image data
itself.
The structure of image data will be destroyed so that in case HDD is stolen, the remain-
ing data included in the image data will not leak. Using the HDD lock password function
or optional security kit (SC-503) along with this function will provide a high level of secu-
rity which prevents images of great importance from leaking. It is recommended to use
HDD lock password function or security kit (SC-503) along with this function for those
who require high level of security.
Functions • To set whether or not to use overwrite temporary data.
• To set overwriting method to use temporary data overwrite function.
Use • To use when making temporary data overwrite function valid.
• All data are temporarily written into HDD or memory during PC print, copier print,
scanning and fax transmission. When the operation is complete, perform overwriting
to the area data were once written in HDD or memory in order to enhance security.
• To change overwriting method to use temporary data overwrite function.
Mode 1: To overwrite 0x00 one time.
Mode 2: Overwrite 0x00 → overwrite 0xff → overwrite 0x61 →validation
• "Encryption Priority/Overwrite Priority" can be selected when the optional security kit
SC-503 is mounted.
Encryption Priority
Overwrite Priority
NOTE
• It is necessary to make HDD format when encryption priority/overwrite priority
setting is changed.
Setting/ • The default setting is OFF.
Procedure
NOTE
• [OFF] cannot be selected when the following setting is set to "ON."
[Administrator Settings] → [Security Setting] → [Enhanced Security Mode]
• The default setting is Encryption Priority. (Only when the optional security kit SC-503
is mounted.)
: When the encryption word is set, the security level of the
data will be enhanced before writing to HDD. When erasing
data, they will all be converted into encryption data before
overwritten. Therefore, overwriting will be executed with the
value besides the value specified by the selected mode.
: Standard encryption method will be applied to data written
to HDD even when the encryption word is set, so overwriting
and erasing will be performed without fail using the specified
value in the selected mode.
It is used for performing the overwriting and erasing accord-
ing to the HDD data erase standard.
"OFF" Mode 1
"Encryption Priority"
8. Utility Mode
Mode 2
Overwrite Priority
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