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driver
Software program which controls output to the printer and
does necessary code conversions between application
program and printer.
economy print mode
Low dot resolution print mode. Allows ink saving.
elementary spacing
Smallest possible horizontal or vertical movement of the
print head.
emulation
Set of commands that can be interpreted by the printer
and/or driver.
ESCAPE character
Special character with the decimal value 27 (ESC), which
tells the printer that the following character(s) form a control
sequence.
ESCAPE sequence
Set of characters, starting with the ESC character, which
controls an action of the printer as defined by its emulation.
factory settings
Printer settings defined by the manufacturer; also known as
default settings (see item).
firmware
Built-in control intelligence of the printer which cannot be
changed by the user.
font
Set of characters available in a certain typeface and size
(see also items "cpi" and "dot size").
F-2
grayscale
Printing method by which dots from a color file are
combined on a document which is printed in monochrome
(black) and shades of gray.
halftoning
Printing method by which shades of gray or of color are
produced by the variable concentration of dots. When
printing in color, the proximity of different colored ink dots
creates the impression of new colors.
handshaking
Signal exchange between the printer and the controlling
system, which regulates the loading of data to the printer's
buffer and avoids overflow of this buffer.
hex-dump
Printing mode in which the transmitted characters (and also
control codes) are printed as two digit hexadecimal codes.
Used for debugging.
initialization
Process at printer switch-on in which the printer executes
an automatic self-diagnosis of its hardware and loads the
settings as defined in programming (set up). Reset by
command also causes (re-)initialization of the printer (but
without hardware check).
interface
Physical (with cable) and logical (synchronization and
interpretation of signals) connection of the printer with a
host system/computer.
ISO table
(International Standardization Organization); a convention
which assigns to certain ASCII codes (see item) a
one-per-nation set of special European characters.
Glossary
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