Xerox 7400N - Phaser Color LED Printer Tamamlayıcı Kılavuz - Sayfa 5
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This additional content data is invariant over time, and does not pose a security
risk. No user controls or commands exist for modifying or deleting these
additional content data files.
e. Some Xerox Phaser models support PDF-Direct printing. For those models that
support this feature, an internal hard disk is required for the feature to operate.
The PDF document format requires non-sequential access to the file's data. Since
a PDF document may be too large to fit entirely in printer RAM memory, the PDF
file is first stored on the printer's internal hard disk before it is processed.
Print jobs sent to the printer using the PDF-Direct page description language may
pose a data security risk because the print job data stream is written to a
temporary file on the printer's internal hard disk. The temporary file is deleted
when the print job is completed.
f. Xerox Phaser printers support a "Printer Neighborhood" feature in the printer's
CentreWare IS internal web server. This feature performs a network discovery to
find other Xerox Phaser printers on the network, and can optionally discover non-
Xerox printers as well. To increase the performance of this feature, the printer
stores the list of discovered network printers in a cache file on the internal hard
disk, if it is present.
The printer discovery data cache is stored in a Xerox proprietary, unpublished
binary data format on the internal hard disk.
The printer discovery data cache may pose a security risk because it contains a
network address listing of additional printers.
There exists no user controls or commands to delete this cache file once it has
been created. The "Printer Neighborhood" feature is disabled by default. Do not
enable this feature to avoid creating this cache file.
g. Files can be created on, modified, and deleted from the printer's internal hard disk
through standard PostScript or PJL/PCL file and resource commands.
Normal printing jobs from the standard Xerox print drivers do not create these
types of PostScript or PCL files. Specialized printing application software, or
custom software or PostScript programs created by a user may create and store
files on the printer's internal hard disk.
Such data files created by the user may or may not pose a data security risk based
on their contents; but the creation and installation of these files on the printer's
disk are entirely at the user's discretion.
3. Secure File Overwrite
When a file is deleted or removed by most computer operating systems, the actual
data contained in the file remains on the hard disk mechanism after the command to
delete the file is completed. Only the directory entry for the file is deleted and the file
no longer appears through the typical operating system software interfaces that access
the hard disk.