SD Series Installation and Administrator’s Guide
19
Bar Code Size
•
A
lower
density
bar
code
is
easier
to
read,
because
the
bars
are
wider
and
spaced
farther
apart.
•
The
width
of
the
narrow
elements
in
the
bar
code
must
be
large
enough
to
be
read
consistently.
The
capabilities
of
the
bar
code
reader
can
influence
this.
•
The
bar
code
must
be
tall
enough
to
be
read
under
normal
conditions.
Bar Code Print Settings
•
To
achieve
the
best
quality
printing
and
improve
the
readability
of
the
bar
code,
use
the
K
(black)
panel
of
color
ribbon
to
the
black
bars.
Bar
codes
printed
with
YMC
panels
are
not
as
crisp
and
sharp
as
those
printed
with
the
K
panel
only.
•
Infrared
readers
require
that
the
K
panel
be
used
to
the
bar
code.
•
The
ANSI
standard
for
bar
code
quality
(X3.182)
assigns
a
grade
to
a
bar
code
to
indicate
its
readability.
Choose
a
K
power
value
and
bar
code
size
to
produce
the
grade
your
system
requires.
Refer
to
“Printer
Setting
Menu”
on
page
37
for
information
about
setting
the
K
power
value.
Test Bar Codes
Always
test
the
readability
of
bar
codes
under
production
conditions.
Factors
to
consider
include:
•
If
you
cards
one
at
a
time,
the
samples
using
that
method.
If
you
cards
in
batch
(many
cards
sent
to
the
printer
at
the
same
time),
use
a
production
‐
sized
batch
and
evaluate
cards
from
the
beginning,
middle,
and
end
of
the
batch.
•
Use
exactly
the
same
card
stock
for
testing
that
you
use
for
production.
The
card
stock
can
affect
the
readability
of
bar
codes.
Usually,
a
white
surface
that
reflects
light
in
many
directions
is
needed.
Test
cards
before
purchasing
production
quantities.
•
Include
other
card
design
components
that
you
use
in
production,
such
as
topcoat.
•
Use
the
same
bar
code
readers
as
users
have,
and
test
each
card
multiple
times
to
simulate
any
wear
the
card
might
experience.
Also
test
multiple
cards.
Содержание SD260
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