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dpi
An acronym for dots per inch, a measurement unit used to indicate printer
resolution. Your QMS 1660 Print System has 300x300, 600x600, and
1200x600 dpi resolution.
Driver
See
printer driver
.
DTR/DSR
An acronym for Data Terminal Ready and Data Signal Received, a hard-
ware-controlled protocol. It controls the flow of data via signals on the DTR/
DSR line, as opposed to XON/XOFF protocol, which is software controlled.
Electrophotographic Drum
A drum in the toner cartridge that is sensitive to both light and electricity. It
is used in the creation and transfer of images to the printed page. See also
toner
,
toner cartridge.
Emulation
Software that allows the printer to respond to commands intended for a
different type of printer. For example, when the printer is set for HP PCL
emulation, it responds to the same commands (HP PCL) that a Hewlett-
Packard LaserJet printer does.
Emulation Sensing Processor (ESP) Technology
Emulation Sensing Processor technology. Using a form of artificial intelli-
gence, ESP technology analyzes incoming file data from any of your
printer's interfaces, selects the appropriate printer language from those
installed on the printer, and processes the print job. ESP technology works
with most popular commercially available applications.
Energy Star Computers Program
A United States Environmental Protection Agency (EPA) program that
promotes the use of energy-efficient personal computers, monitors, and
printers and the reduction of air pollution caused by power generation.
Ethernet
A linear local area network developed by Xerox in 1976 and is presently
an industry standard. Each device, or node, is connected by twisted-pair
wiring, thin coaxial cable, or thick coaxial cable (not supported by your