QMS DeskLaser 1600 User Manual page 112

Serial interface
A connection between the computer and printer in which data is
transmitted sequentially over a single wire. A serial interface is slower than
a parallel interface, but it can send data over a much greater distance. The
RS-232C interface is a type of serial interface. See also Parallel interface.
Serial protocol
A set of rules used by the computer and the printer to regulate the flow of
data between them.
Symbol set
The set of characters used in a font. Most symbol sets contain standard
letters, numbers, and punctuation. Symbol sets differ in the accented
characters, line drawing characters, and special symbols they contain.
ASCII, Roman-8 and PC-8 and examples of symbol sets.
Symbol sets are also called character sets, which is the term usually used
with dot matrix printer fonts. See also ASCII character set; ISO symbol
set.
Toner
Electrically charged carbon particles that adhere to charged areas on the
photoconductive drum to produce an image pattern. The carbon pattern
is transferred to the paper and melted by the fuser unit to form a
permanent image on the paper.
Transfer unit
The part inside a page printer that transfers the image from the
photoconductive drum to the paper.
QMS DeskLaser 1600P User Manual GL-7