Xerox 6030 Release Note

Also see for 721: User guide Operator's manual Setup guide User guide Release note

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Xerox 6030 Release Note Manual pdf 18 page image

inappropriate data is sent, an error message is returned. To verify valid changes to printersettings, a test print can be printed to view the changed settings.8.5.8 Disk Image Overwrite8.5.8.1 OVERVIEWThe Disk Image Overwrite feature has two operations: Immediate and On Demand. Theimmediate operation overwrites image data on the hard drive immediately after it is no longerneeded (i.e. When the page has printed). The On Demand operation cleans the entire disk.Both On Demand Image Overwrite and Immediate Image overwrite feature are configured by thesystem administrator, assuming that the system administrator password is set to a non-zerovalue.8.5.8.2 ALGORITHMThe overwrite algorithm for both IIO and ODIO conforms to the U.S. Department of DefenseDirective 5200.28-M (Section 7, Part 2, paragraph 7-202), and is common to allWorkCentre/WorkCentre Pros and AccXES controllers.The algorithm for the Image Overwrite feature is:Step 1: Pattern #1 is written to the sectors containing temporary files (IIO) or to the entirespooling area of the disk (ODIO). (hex value 0x35 (ASCII “5”)).Step 2: Pattern #2 is written to the sectors containing temporary files (IIO) or to the entirespooling area of the disk (ODIO). (hex value 0xCA (ASCII compliment of 5)).Step 3: Pattern #3 is written to the sectors containing temporary files (IIO) or to the entirespooling area of the disk (ODIO). (hex value 0x97 (ASCII “ú”)).Step 4: 10% of the overwritten area is sampled to ensure Pattern #3 was properly written. The10% sampling is accomplished by sampling a random 10% of the overwritten area.See Online Help in WebPMT for more details about using the Image Overwrite feature.Page 18