Your printer contains various types of memory that are capable of storing device and network settings, information from embedded solutions, and user data. The types of memory—along with the types of data stored by each—are described below.
Volatile memory—Your device utilizes standard Random Access Memory (RAM) to temporarily buffer user data during simple print and copy jobs.
Non-volatile memory—Your device may utilize two forms of non-volatile memory: EEPROM and NAND (flash memory). Both types are used to store the operating system, device settings, network information, scanner and bookmark settings, and embedded solutions.
Hard disk memory—Some devices have a hard disk drive installed. The printer hard disk is designed for device-specific functionality and cannot be used for long term storage for data that is not print-related. The hard disk does not provide the capability for users to extract information, create folders, create disk or network file shares, or FTP information directly from a client device. The hard disk can retain buffered user data from complex scan, print, copy, and fax jobs, as well as form data, and font data.
There are several circumstances under which you might wish to erase the contents of the memory devices installed in your printer. A partial list includes:
The printer is being decommissioned
The printer hard drive is being replaced
The printer is being moved to a different department or location
The printer is being serviced by someone from outside your organization
The printer is being removed from your premises for service
The printer is being sold to another organization
| Note: Not all printers have a hard disk installed. |
In high-security environments, it may be necessary to take additional steps to ensure that confidential data stored on the printer hard disk cannot be accessed once the printer—or its hard disk—is removed from your premises. While most data can be erased electronically, you may want to consider one or more of the following actions before disposing of a printer or hard disk:
Degaussing—Flushes the hard drive with a magnetic field that erases stored data
Crushing—Physically compresses the hard disk to break component parts and render them unreadable
Milling—Physically shreds the hard disk into small metal bits
| Note: While most data can be erased electronically, the only way to guarantee that all data is completely erased is to physically destroy each memory device on which data could have been stored. |