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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
The special character with the decimal value 27 (ESC),
which tells the printer that the following character(s) form a
control sequence.
ESCAPE sequence
A 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
The built-in control intelligence of the printer which cannot
be changed by the user.
font
A set of characters available in a certain typeface and size
(see also items "cpi" and "point size").
handshaking
The 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.
F-2
hex dump
A printing mode in which the transmitted characters (and
also control codes) are printed as two digit hexadecimal
codes. Used for debugging.
initialization
The 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.
landscape
Page orientation in which the characters are printed along
the long side of the paper.
LED
(Light Emitting Diode); indicator which lights up on the
printer operator panel.
line buffer
The RAM memory of the printer where incoming data is
stored until it is processed. The filling of the line buffer is
controlled by the handshaking (see item) procedure of the
transmission protocol.
Glossary
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