interface. The hardware component used to line two
devices by common physical interconnection, signal,
and functional characteristics.
invoke. To put into effect or operation.
IP Address. The Internet Protocol Address. A numeric
address such as 123.45.61.23 which identifies a printer
or server in a LAN or WAN.
IPDS. Intelligent Printer Data Stream.
ipm. Abbreviation for inches per minute. A measure
of the speed of a printer printing in graphics print
mode (plotting speed).
italic. A slanted type style. This is an italic type style.
Both forward and backward slant are available.
L
LAC. Load Alternate Characters.
LF. Line Feed.
landscape. Printed perpendicular to the paper motion.
LCD. Liquid-crystal display. The LCD is located on
the operator panel. Its purpose is to communicate
information to the operator concerning the operating
state of the printer.
LED. Light Emitting Diode. The printer operator panel
has LEDs that indicate the state of the printer to the
operator.
logical link. The parameters that specify data transfer,
control, or communication operations.
lpi. Abbreviation for lines per inch. A measurement
indicating the vertical spacing between successive lines
of text. For example, 8 lpi means eight lines of text for
every vertical inch.
lpm. Abbreviation for lines per minute. A
measurement of the print speed of a line printer
printing in text print mode.
M
monospaced. See font, monospaced.
MM. Millimeter.
MPL. Maximum Page Length. Also known as forms
length. The number of lines that can be printed on a
page.
MPP. Maximum Print Position. Also known as line
length. See also PMPP.
N
NAK. Negative acknowledge. Not acknowledged.
N/A. Not available or not applicable.
NL. New Line (3287 only).
NLQ. Abbreviation for near letter quality font. This is
the highest resolution mode supported on the 6500-v.
Not Ready Mode. Offline. The printer is not ready to
receive and process commands and data.
nS. Nanosecond.
NVFU. Direct Access Vertical Format Unit. See also
DAVFU.
NVRAM. Abbreviation for nonvolatile random access
memory. The storage is permanent, in the sense that
information is not lost when the printer is powered off.
O
OCR. Abbreviation for Optical Character Recognition.
A process by which a machine can “read” characters
printed in a special standardized font. Data are read by
a photoelectric optical scanner and can be recorded on
magnetic tape or disk. OCR-A and OCR-B are two
widely used OCR fonts.
Ohm. A unit of measurement for electrical resistance.
P
PA. Program Attention. Used in application programs.
parity (check). Parity checking is the addition of
non-data bits to data, resulting in the number of bits
that are set to a “1” being either always even or always
odd. Parity is used to detect data errors.
PC. Personal Computer.
PCBA. Printed Circuit Board Assembly.
pel. The smallest element of a physical medium that
can be independently assigned color and intensity. Pels
per inch is often used as a measurement of presentation
granularity. Synonymous with picture element, pixel.
PI. Abbreviation for Paper Instruction. A physical
hardware I/O line used in conjunction with the eight
data bit lines. When PI is set high, it indicates that the
eight data bits are interpreted as a paper motion
command instead of printable data.
pica. A name indicating a monospaced font with a
pitch of 10 cpi (and usually 12 points in height). Pica is
also used in typography as a unit of measurement
equal to 1/6 inch.
290 Infoprint 6500 User’s Manual
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