Mil-Std
130M Compliant
2D Codes
Choosing
the right two dimensional code for your application requires
decisions on:
- Physical
space availability
- Contrast
issues
- Printing
technology (ink jet marking, laser marking, peening)
- Scanner/Reader
requirements
- Cost
considerations
Mil-Std-130M
compliance
JETEC
Corporation can provide ink jet systems, laser markers or electro-chemical
etching systems to print Mil-Std-130 compliant 2D codes. JETEC
offers preprinted Mil-Std 130M compliant labels and tags. For
more information click here. JETEC
2D code printing systems are capable of printing ANS MH 10 Data
Identifiers per ISO/IEC 15434. In addition, we can provide integrated
2D code readers from such major suppliers as RVSI Ci-Matrix,
Microscan, DVT,Cognex and SICK as
well as recommend the optimum hand held readers for your application.
JETEC is an experienced direct product marking system
supplier for the aerospace, automotive, electronics, printed
circuit board and defense contracting industries.
Background
Information
Linear
or one-dimensional bar codes are limited in the amount of information
that can be contained within the code. Other technologies, such
as magnetic stripe or RF tags can hold more information but
are more expensive to implement. In an effort to develop bar
code symbologies that would hold more information, stacked codes
were developed.
Stacked
codes are linear bar codes printed one above the other to form
a single symbol. These codes could be read by conventional reading
equipment, such as laser or CCD handheld scanners. Some examples
of stacked codes are Code 49, Code 16K and PDF417.
To
increase the density of information even further, matrix codes
were developed. Matrix codes encode information using fixed
width light and dark cells and also utilize sophisticated error/erasure
correction algorithms to compensate for lost or missing data,
extraneous marks, or code damage. There is usually some standard
locator pattern, that is part of the image, to assure correct
orientation when decoding the symbol. This means that print
quality and contrast are much less critical than with 1-D bar
codes or stacked bar codes. In fact, matrix codes can be applied
directly to silicon wafers, PCBs, automotive components, or
other applications where paper labels are inappropriate.
Since
they are not really "barcodes" anymore, conventional
scanners can no longer read these codes. They are normally read
by scanners using two-dimensional CCD devices that can capture
an image of the entire symbol. Examples of matrix codes include
Data Matrix, Maxicode,
Aztec Code, PDF
417, QR Code and Snowflake.
The
amount of information contained within each individual two-dimensional
mark allows independent database with complete freedom of movement,
traveling together with a person or an item, object, package
form, document, card or label. It does what wired networks cant:
allows you to immediately access your data regardless of location.
In addition, encryption is available as an option when additional
security is required. Moreover, because both matrix and stacked
codes are machine-readable, it eliminates time consuming and
error prone manual data entry.
Movement
from Linear Bar Codes to 2D Codes
The
shift from 1D to 2D coding is being driven by the fact that
the traditional linear bar code is incapable of meeting industrys
desire to encode larger blocks of data, such as expiration dates,
lot/batch numbers, serial numbers, product codes and traceability
codes. Traditionally, the bar code industry has reacted to this
demand by continuously shrinking the size of the linear codes
and developing denser formats. However, this is constrained
by the printing technology available to produce them. Additionally,
numerous data integrity tests have been conducted to evaluate
the robustness of both matrix and stacked codes. Results of
these tests corroborate the fact that the newer symbologies
that include error correction are extremely robust when compared
with traditional 1D codes, when error rates shown to be less
than one in 10,000,000 characters.
Why
JETEC?
JETEC
Corporation has the capability of upgrading your present
marking process to include 2D code marking and reading in compliance
with Mil-Std-130M. For those customers with existing ink jet
or laser marking systems our IMS2701
Software can provide the necessary 2D code marking capability
without requiring additional marking equipment. Otherwise, JETEC
can provide complete, turnkey 2D code marking systems. All of
the marking systems offered by JETEC Corporation provide
the capability to print traditional 1D bar codes as well as
2D codes. JETEC marking systems incorporate industrial
ink jet, laser scribing and dot peening technologies for Direct
Product Marking (DPM), thereby creating a permanent robust mark
without the expense and hassle of labels. Additionally, all
2D codes require a 2D code reader for encoding; they cannot
be read using an ordinary linear bar code scanner. Process engineers
should be aware that there is a large variance in how well vendor
2D code readers perform on varying surfaces. Knowing which industrial
marker and reader to use for your specific application can be
challenging. We encourage you to allow JETEC to use our
expertise in Mark-Read systems to select the best product marking
and read verification system for your application. Contact
us for free consultation, sample marking, product demonstration
and systems definition.
Tel: (949) 477-6161
Fax: (949) 477-6167