HP Designjet T920 and T1500 ePrinter Series - Certificate of Volatility

This statement provides a generic view of memory device volatility for the stated HP Designjet printers. It should not be used
as a supporting document either directly or indirectly for any claims against Hewlett-Packard. HP assumes no obligation to
any legal issues arising from the use of this document either directly or indirectly. This document is privileged, confidential,
and contains private information. Any reading, retention, distribution, or copying of this communication by any person other
than its intended recipient is prohibited.
 NVM in printheads. 256 bits per printhead. Contains usage information and control parameters
for the printhead.
 NVM at line sensor. 2KB. Contains calibration tables for the sensor.
 NVM at analog encoder PCA. 256 KB. Contains printer settings and calibrations; it also contains
usage counters. It can be reset to factory defaults by a service engineer.
 NVM. 64 Kbit. Mounted on the RFID Tag. Contains a copy of the printer identification values. It is
not possible to clear the memory.
 NVM 18 Kbyte. Mounted on a chip. Contains a copy of the printer identification values.
 NVM in service station. 1Kbyte. Mounted on a board that controls the printhead cleaning station
to manage the cleaning station.
 NVM in printhead carriage. 640 bytes. Contains information and control parameters for the
printhead.
 NVM in I/O Card. 18 Kbytes. Contains information with the control parameters for the Gigabit
Ethernet card.
Hard Disk Drives
The printer contains a 320GB hard disk drive with different purposes. It is not possible to operate the
printer without the hard disk drive.
User information can be stored in 5 different partitions of the hard disk drive, and includes:
 Calibration data and printer settings.
 User plots (in rasterized format, i.e. already processed).
 User plots in native format (plots submitted to the Job Storage of the printer).
 Accounting information.
 Usage information.
There are different options to erase part of the user information on the hard drive:
 User plots in native format stored in the Job Storage folder of the printer can be erased
manually by users with administrative access to the printer’s Embedded Web Server.
 User plots in rasterized format (in the printer’s queue) can be erased from the queue by users
with administrative access to the printer’s Embedded Web Server or with access to the printers
front panel.
 Temporary scan files can be erased from the queue by accessing the printers front panel.
 Calibration data, printer settings, usage information, and accounting information can be erased
by service engineers.