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Barcode
Scanners
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Industry Definitions
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Laser Scanner |
Laser scanners use a low energy osculating
laser light beam (which requires a Class II
safety warning) to illuminate the barcode.
The laser scanner can decode barcodes at a
scan rate of 40 to 100 reads per second, at
ranges from a few inches to 10 feet or
more. They are the most effective barcode
reader for use on curved, oddly shaped
packages and labels that are located behind
stretch wrap or where extra long distance
scanning is required.
The Laser scanners are very
effective barcode reader for use with labels
on flat, rough or even curved packages. |
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CCD Scanner |
The CCD barcode scanners use diodes to flood
the barcode with light and scan the barcode
at a rate of 40 to 80 reads per second.
They tend to be more rugged than laser
scanners because they have no moving parts.
New technology enables some CCD scanners to
read barcodes at distances exceeding 20".
The new generation long range CCD barcode
scanners can compete with many laser
scanners in performance and are considerably
less expensive. CCD scanners come in two
basic types, Touch CCD Scanners, which can
scan a barcode from contact up to an inch
way and Long Range CCD Scanners that can
scan barcodes at distances up to 22 inches
and more. The CCD scanners are very
effective barcode reader for use with labels
on flat, rough or even curved packages. |
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Imager |
Imagers combine the flexibility to
read 2 dimensional
(2D) symbologies such as the PDF417, Datamatrix
and Maxicode, along with standard linear
type barcodes.
The versatile reading capability of barcode
imagers allows fast and easy decoding for
retail, office and light industrial
applications. Imagers are very
effective reader for use with labels on
flat, rough, curved packages and even
damaged barcodes.
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Wands |
Low cost wand scanners are best suited for
scanning barcodes on flat clean surfaces.
Barcode wand readers are not forgiving and
require the user to pay attention to certain
details when scanning, because you get one
scan, one read. If you scan the barcode too
fast, too slow, at the wrong angle or don't
keep the scanner tip on the barcode, you
will have to repeat the scan process again.
High print quality labels are critical when
using wand type barcode reader. Wands are
not recommended for curved, rough or oddly
shaped packages or for locations where dirt
or dust exists.
The barcode wand scanner is older
technology. |
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