Ricoh Aficio MP C2550 User Manual

Dirty
This icon is lit when there is temporary data to be overwritten, and
blinks during overwriting.
Clear This icon is lit when there is no temporary data to be overwritten.
• The Data Overwrite icon will indicate "Clear" when there is a Sample Print/Locked Print/Hold Print/
Stored Print job.
• If the Data Overwrite icon is not displayed, first check if Auto Erase Memory has been set to Off. If
the icon is not displayed even though Auto Erase Memory is On, contact your service representative.
Methods of Overwriting
You can select a method of overwriting from the following:
• NSA*1
Temporary data is overwritten twice with random numbers and once with zeros.
• DoD*2
Temporary data is overwritten with a fixed value, the fixed value's complement, and random numbers.
It is then verified.
• Random Numbers
Temporary data is overwritten multiple times with random numbers. The number of overwrites can be
selected from 1 to 9. The default is 3 times.
*1
National Security Agency, U.S.A.
*2
Department of Defense, U.S.A.
• Default: Random Numbers
Using Auto Erase Memory
This can be specified by the machine administrator.
For details about logging on and logging off with administrator authentication, see "Logging on Using
Administrator Authentication", "Logging off Using Administrator Authentication".
5. Protecting Information Transmitted Through the Network or Stored on the Hard Disk from Leaks
136
5

Ricoh Aficio MP C2550 Specifications

General

Print Technology	Laser
Functions	Print, Copy, Scan, Fax
Print Speed (Color)	25 ppm
Print Speed (Monochrome)	25 ppm
Print Resolution	600 x 600 dpi
Maximum Print Resolution	2400 x 600 dpi
Duplex Printing	Yes
Copy Speed (Color)	25 cpm
Copy Speed (Monochrome)	25 cpm
Copy Resolution	600 x 600 dpi
Memory (Maximum)	1 GB
Hard Disk Drive (Optional)	80 GB
Interface	USB 2.0, Ethernet 10/100Base-TX
Fax Transmission Speed	33.6 Kbps
Maximum Paper Size	A3
Scan Resolution	600 dpi
Zoom Range	25% - 400%
Paper Size	A4, A5, B5
Paper Weight	52 - 256 g/m²
PDL	PCL 6, PostScript 3
Network Connectivity	Ethernet
Operating System Compatibility	Windows, Mac OS