Xerox 5755, 5790, 5775, 5745, 5740, 5735 manual Algorithm, User Behavior, Overwrite Timing

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XEROX WorkCentre 5735/5740/5745/5755/5765/5775/5790 Information Assurance Disclosure Paper

4.5.1. Algorithm

The overwrite mechanism for both IIO and ODIO conforms to the U.S. Department of Defense Directive 5200.28-M (Section 7, Part 2, paragraph 7-2022.

The algorithm for the Image Overwrite feature is:

Step 1: Pattern #1 is written to the sectors containing temporary files (IIO) or to the entire spooling area of the disks (ODIO). (hex value 0x35 (ASCII “5”)).

Step 2: Pattern #2 is written to the sectors containing temporary files (IIO) or to the entire spooling area of the disks (ODIO). (hex value 0xCA (ASCII compliment of 5)).

Step 3: Pattern #3 is written to the sectors containing temporary files (IIO) or to the entire spooling area of the disks (ODIO). (hex value 0x97 (ASCII “ú”)).

Step 4: 10% of the overwritten area is sampled to ensure Pattern #3 was properly written. The 10% sampling is accomplished by sampling a random 10% of the overwritten area.

4.5.2. User Behavior

IIO can be enabled at the local UI only. Once enabled, IIO is invoked automatically immediately prior to the completion of a print, network scan, internet fax, network fax, or e-mail job. If IIO completes successfully, status is displayed in the Job Queue. However, if IIO fails, a popup will appear on the Local UI recommending that the user run ODIO, and a failure sheet will be printed.

ODIO may be invoked either from the Local UI in Tools Pathway or from the CentreWare Internet Services Web UI. Network functions will be delayed until the overwrite is completed. Copying is unavailable while the overwrite itself is underway, but copies may be made while the controller is booting.

Upon completion and verification of the ODIO process, a confirmation sheet is printed which indicates the status of the overwrite. The completion status can be successful, failed, cancelled, or timed-out.

Please note that invocation of ODIO will cause currently processing print jobs to be aborted. However, scan jobs will not be aborted and so ODIO might fail. The user should insure that all scan jobs have been completed before invoking ODIO.

Please refer to the customer documentation for a description on how failures are logged.

4.5.3. Overwrite Timing

The ODIO overwrite time is dependent on the type of hard disk in the product. The overwrite and reset average time is 10 minutes, but longer times are possible.

IIO is performed as a background operation, with no user-perceivable reduction in copy, print or scan performance.

2http://www.dtic.mil/whs/directives/corres/archives/520028m_0173/p520028m.pdf

Ver. 2.00, March 2011

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Contents Xerox WorkCentre Page Device Description Target AudienceSecurity Aspects of Selected Features Disclaimer PurposeTarget Audience Physical Partitioning Security-relevant SubsystemsSecurity Functions allocated to Subsystems System functional block diagramPurpose ControllerMemory Components Security Functions allocated to SubsystemsHard Disk Drives Controller memory componentsController External Connections External ConnectionsUSB Ports Scanner Fax ModuleHardware USB PortsScanner memory components Graphical User Interface GUIControl and Data Interfaces System Software StructureOpen-source components OS Layer in the ControllerController Operating System layer components IPv4 Network Protocol Stack Network ProtocolsIPSec Logical AccessPort 25, Smtp PortsPort 53, DNS Port 68, DhcpServer Port 80, HttpPort 110, POP-3 Client Port 88, KerberosPorts 161, 162, Snmp Ports 137, 138, 139, NetbiosPort 389, Ldap Port 396, NetwareIP Filtering Authentication Model System AccessAuthentication and Authorization schematic System Administrator Login All product configurations Login and Authentication MethodsUser authentication Kerberos Authentication Solaris or Windows 2000/WindowsDomain Controller Network Scanning Multifunction models only System AccountsPrinting Multifunction models only Service All product configurations DiagnosticsAlternate Boot via Serial Port Tty ModeAccess Accessible Data Summary Audit Log Security Aspects of Selected FeaturesIfax Event Event description Entry Data SSL System startup Device name Device serial number Ifax Event Event description Entry Data SSL Xerox Standard Accounting Image Overwrite Automatic Meter ReadsEncrypted Partitions Overwrite Timing AlgorithmUser Behavior Responses to Known Vulnerabilities Appendix a Abbreviations Portable Service Workstation Non-Volatile Random Access MemoryPrinted Wire Board Assembly System AdministratorSnmp version / Network Transport support WorkCentre Appendix B Supported MIB ObjectsTerm Definition RFC 1213 MIB-II for TCP/IP group WorkCentre RFC 1759 Printer MIB Group WorkCentreRFC 1514 Host Resources MIB group WorkCentre Additional Capabilities / Application Support WorkCentre Controller Hardware Appendix C -StandardsController Software RFC/StandardPrinting Description Languages Appendix E References
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5790, 5755, 5775, 5735, 5740 specifications

The Xerox 5790, 5760, and 5765 are part of Xerox's well-known line of multifunction printers (MFPs), designed to meet the needs of businesses looking for efficient, high-volume printing, copying, and scanning solutions. These models provide a blend of advanced technology and user-friendly features, making them ideal for offices that demand speed and reliability.

The Xerox 5790 is a standout model in this series, offering exceptional printing speeds of up to 90 pages per minute. It features a robust paper handling system capable of accommodating various media sizes and types, including both standard and custom formats. This model integrates advanced imaging technology, providing high-quality output with sharp text and vibrant colors, thanks to its high resolution of up to 1200 x 1200 dpi.

The 5760 and 5765 models, while slightly lower in terms of speed – with the 5765 reaching up to 65 pages per minute – still maintain impressive performance levels suitable for medium to large-sized businesses. Both devices utilize Xerox's innovative EA toner technology, which delivers fine details and smooth gradients, making them particularly effective for graphics-intensive documents.

One of the key features across these models is their user-friendly touchscreen interface, which simplifies operation and allows for seamless workflow management. Users can easily access scanning, printing, and copying functions, with options to customize workflows according to specific job requirements. Additionally, these MFPs offer advanced scanning capabilities, such as double-sided scanning and scan-to-email features, enhancing productivity.

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In addition to their powerful performance, these models also come equipped with various security features, such as secure print, user authentication, and data encryption, ensuring sensitive information remains protected. With their strong emphasis on sustainability, Xerox has designed these printers to be energy-efficient and equipped with features aimed at reducing paper waste, such as duplex printing.

In conclusion, the Xerox 5790, 5760, and 5765 multifunction printers combine speed, quality, and advanced technology, making them excellent choices for businesses looking to enhance productivity and workflow. Their range of features and capabilities ensures they can meet the demands of various office environments, all while maintaining a commitment to sustainability and security.
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