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Glossary
Alphanumeric - A term used to identify characters consisting of letters, numbers, and other
symbols such as punctuation marks and mathematical symbols.
Bar code - Alphanumeric characters that are represented using a system of printed lines,
which can be read by a computer.
Black-line - A registration mark, typically a black line on the underside of certain media that
is used to identify the starting position of a label.
Blow-hole - A registration mark, typically a notch or cutout in certain media that is used to
identify the starting position of a label.
Continuous media - Media that contains no gap and continues as one piece of media.
CTS (Clear to Send) - A handshaking signal used to provide information when a DCE or
modem is ready to receive data in an RS-232 communication link. Used in conjunction with
RTS.
Cutter - An optional device, mounted on the printer, used to cut media into custom sized
labels after printing
DCE (Data-Circuit-terminating Equipment - The modem or printer end of an RS-232
serial communication link. Modem serial ports and other peripherals are typically configured
as DCE.
Die-cut media - Media that is cut using a die to form individual labels that have a start and
stop point. Typically, the excess material surrounding the label is removed from the backing
material.
Direct thermal - Method of printing with a special heat-sensitive media that directly contacts
heat elements of a thermal print head. (See Thermal print head)
DPI (Dots Per Inch) - A unit of measure term that identifies the print resolution capability.
Drive roller - Platen roller located below the print head that is used to drive media through
the printer.
DSR (Data Set Ready) - A handshaking signal used to provide information about the status
of an RS-232 serial communication link. Used in conjunction with DTR.
DTE (Data Terminal Equipment) - The terminal or computer end of an RS-232 serial
communication link. Serial ports on computers are typically configured as DTE.
DTR (Data Terminal Ready) - A handshaking signal used to provide information about the
status of the communication line connected to the DCE end of an RS-232 link. Used in
conjunction with DSR.
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