Specifications

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Drivers - A file containing information needed by an application program or operating
system to operate a peripheral such as a monitor or printer.
Duplexing - Printing on both sides of a sheet of paper. Digital duplicators print duplex
by having the user pass the paper through the digital duplicator a second time.
ECP - Enhanced Capability Port - An improved parallel port supporting two-way
communication between the computer and the controller.
EEPROM - Electrically Erasable PROM – a form of EPROM that may be erased and re-
programmed in-circuit. See Flash ROM.
EPP - See ECP.
EPROM - Electrically Programmable ROM – a ROM chip that can be re-programmed.
In a controller, the EPROM contains the latest versions of the firmware, and the
PostScript and PCL5e interpreters.
EPS - Encapsulated PostScript – a method of storing a high-resolution graphic image in
the PostScript page description language.
EPS Files - A file containing an image saved in the EPS format.
Ethernet - The common name given the LAN technology standard described by IEEE
802.3. The Xerox Company originally developed Ethernet.
EtherTalk - The name given by Apple Computer to the process of using the AppleTalk
protocol on an Ethernet LAN.
External drive - A hard drive, ZIP drive, JAZ drive, CDROM drive, floppy drive, etc.
with its own case, cables and power supply, external to the computer. It is usually
connected to the computer through a SCSI or parallel port.
Firmware - This is the operating system (BIOS) software of the computer or controller
stored in ROM.
Firmware Version - This number communicates which revision of firmware is resident
in the controller or computer.
Flash Memory - A type of ROM that may be electrically reprogrammed (updated or
upgraded) though software rather than having to remove/replace it.
Flash ROM - See Flash Memory.
Floppy drive – The mechanism that writes and reads data to and from 3.5” floppy disks.
Font - An arrangement of screen or printing dots forming a certain style of character
numbers, letters, or symbols.
Font Caching - Storing fonts in RAM or a hard drive speed up printing.
Font Matching - The process the controller uses to select a font for printing based on the
instructions it receives from the printer driver. For example, when a document
containing TrueType fonts is sent to the controller using a PostScript printer driver,
the controller performs font matching to match each TrueType font with an
equivalent, resident PostScript font. The same process is done if a document
containing PostScript fonts is sent to the controller using the PCL printer driver. The