HP Designjet HD - Security Features Comparison; Designjet vs LaserJet Features; Secure File and Disk Erase; Secure File Erase Modes

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Designjet Security features vs LaserJet
HP LaserJet printers have some security features that are not yet available in HP Designjet printers.
As a brief comparison, please find the following list of features compared between the HP LJ 9050 series and
HP DJ 4020 series. In the appendix we explain what each security feature is.
Security Feature LJ 9000 DJ 4020
Authentication Manager Yes No
Control panel lock Yes Yes
Device Password Yes Yes
Direct Connect Ports (USB/IEEE 1284) Yes Yes
File erase mode Yes Yes
File system access settings Yes No
File system password Yes No
Job Held Timeout Yes No
Job Retention Yes No
PJL Password Yes No
Remote FW upgrade Yes Yes
For those concepts not explained into the Appendix “Security Concepts related to Designjet” you will find an
explanation in the glossary
Appendix: Security Concepts explanation
Secure File and Disk Erase
Secure File Erase can be divided in three parts:
1. File erase allowing printer working mode of continuous removal of files in a non-secured and secure
manner
2. Disk erase allowing a complete removal of all user data in HDD content
3. The user interface providing access to the secure erase functionality
Shown below is how each of these features can be used in a secure manner within a printing environment.
1. File Erase
There are three modes of operation when using the Secure Files Erase feature; this means that each file that
the printer creates and removes follows the secure specification, so a minimal of data remains at any time
without being sanitized:
I. Non-Secure Fast Erase: In this mode, all file pointers to the data (table indexes) are erased.
Temporary data remains on the Hard Disk Drive until the disk space it occupies is required for
another purpose, and it is then overwritten. This is default mode of operation and it is how the
product works today. This is the fastest mode of operation.
II. Secure Fast Erase: In this mode of operation, file pointers are erased and the disk space where the
temporary job was stored is also overwritten with a fixed character pattern. This mode of operation
is slower than Non-Secure Fast Erase, but all data is overwritten!