HP Designjet T920, T1500 and T2500 ePrinter Series - Certificate of Volatility

This statement provides a generic view of memory devices volatility of the stated Designjet printers. It should not be use as a supporting document directly
or indirectly for any claims against Hewlett-Packard. HP assumes no obligation to any legal issues arise from the use of this document directly or indirectly.
This letter 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 ink supplies. 1Kbyte per ink cartridge. It contains usage information and control
parameters for the ink supply.
• NVM in printheads. 256 bits per printhead. It contains usage information and control
parameters for the printhead.
• NVM at line sensor. 2KB. It contains calibration tables for the sensor.
• NVM at analog encoder PCA. 256 KB. It 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's 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 to that contains information and control
parameters for the printhead.
• NVM in I/O Card. 18 Kbytes. It contains information with the control parameters for the
Gigabit Ethernet card.
Hard Disk drives
The printer contains a 320GBytes hard disk drive which has 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 can include:
• Calibration data and printer settings
• User plots (in rasterizer format, i.e. already processed)
• User plots in native format (plots submitted to the Job Storage of the printer)
• Accounting information
• Usage information
For the T2500eMFP, an additional partition will hold user information:
• Scan temporal files
There are different options to erase part of the user information in 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
• Scan temporal files can be erased from the queue by accessing the printers front panel