Zebra 170PAX2 Series Guia do Utilizador descarregar pdf (Página 91)

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Glossary

alphanumeric Indicating letters, numer-

als, and characters such as punctuation

marks.

backfeed When the print engine pulls the

media and ribbon (if used) backward into

the print engine so that the beginning of

the label to be printed is properly posi-

tioned behind the printhead. Backfeed

occurs when operating the print engine in

tear-off or applicator mode.

bar code A code by which alphanumeric

characters can be represented by a series

of adjacent stripes of different widths.

Many different code schemes exist, such

as the universal product code (UPC) or

Code 39.

black mark A registration mark found on

the underside of the print media which

acts as a start-of-label indication for the

print engine. (See non-continuous media.)

calibration (of a print engine) A process

in which the print engine determines

some basic information needed to print

accurately with a particular media and

ribbon combination. To do this, the print

engine feeds some media and ribbon (if

used) through the print engine and senses

whether to use the direct thermal or ther-

mal transfer print method, and (if using

non-continuous media) the length of indi-

vidual labels or tags.

character set The set of all letters,

numerals, punctuation marks, and other

characters that can be expressed by a par-

ticular font or barcode.

check digit A character added to a bar-

code symbol that indicates to the scanner

that it has read the symbol correctly.

configuration The print engine configu-

ration is a group of operating parameters

which are specific to the print engine

application. Some parameters are user

selectable while others are dependent on

the installed options and mode of opera-

tion. Parameters may be switch select-

able, front panel programmable or

downloaded as ZPL II commands. A

Configuration Label listing all the current

print engine parameters may be printed

for reference.

continuous media Label or tag-stock

media that has no notch, gap, or web

(backing material only) to separate the

labels or tags. The media is one long

piece of material.

core diameter The inside diameter of the

cardboard core at the center of a roll of

media or ribbon.

diagnostics Information about which

print engine functions are not working

that is used for troubleshooting print

engine problems.

die-cut media A type of label stock

where individual labels are stuck to a

backing material. The labels may be

either lined up against each other or sepa-

rated by a small distance. Typically the

material surrounding the labels has been

removed. (See non-continuous media.)

direct thermal A printing method in

which the printhead presses directly

against the media. Heating the printhead

elements causes a discoloration of the

heat-sensitive coating on the media. By

selectively heating the printhead elements

as the media moves past, an image is

printed onto the media. No ribbon is used

with this printing method. Contrast this

with thermal transfer.

direct thermal media Media that is

coated with a substance which reacts to

the application of direct heat from the

printhead to produce an image.

dynamic ram DRAM is the term used to

describe the memory devices used to

store the label formats in electronic form

while they are being printed. The amount

of DRAM memory available in the print

engine determines the maximum size and

number of label formats that can be

printed. This is volatile memory which

loses the stored information when power

is turned off.

fanfold media Media that comes folded

in a rectangular stack. Contrast this with

roll media.

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