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bus A circuit for the transfer of data or electrical signals
between two devices.
cartridge ribbon system (CRS)
An ink delivery system which allows the printer to
automatically detect when a new or used ribbon is
loaded, and all ribbon properties.
character cell The invisible rectangular space occupied by a character,
including the white space around the character. The
height of a cell remains constant even with changes in
the current line spacing, and the width is equal to the
current character spacing. Used as a unit of spacing.
character proportion
The ratio of character height to character width.
See also compressed and expanded.
character set A set of codes, each of which represents a printable
character, including symbols, punctuation, numbers,
diacritical markings, and alphabet characters. Each
character is assigned a unique code value.
character weight The degree of lightness and thickness of printed text. For
example: Bold refers to a heavy or thick character
weight. Medium, normal, or book weight refer to the
character weight used in this sentence.
checksum A stored or transmitted numerical value used to verify
data integrity.
Code V An optional QMS emulation which allows you to create
and store forms, generate logos, bar codes, and
expanded characters, create other graphics, and merge
graphics with alphanumeric data as a document is
printed.
command An instruction, such as a form feed command, sent from
a computer to the printer (sometimes called a control
code or non-printable character). As opposed to data,
which is information to be printed.
command delimiter An ASCII character used to begin a command string
(same as SFCC). Commonly used command delimiters
are ESC (1B hex) and SOH (01 hex).
command sequence
Two or more bytes that instruct the printer to perform a
special function. The first character in the sequence is a
special function control character (SFCC), which alerts
the printer that the string is a command sequence.
See also escape sequence, SSCC, and SFCC
sequence.
compatibility The ability of one printer to accept and properly process
commands meant for a different printer.
See also emulation and protocol.
compressed Refers to a typeface with a font width approximately 60%
smaller than normal. Character height is not changed.
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