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Bar Code 39

CODE 39 is an alphanumeric symbology with some ASCII characters available. Although it is a self checking symbology, check characters may be used when number integrity has a high priority. State-of-the-art handheld scanners; however, make the use of this check character redundant. According to ANSI Standards, Code 39 has a standard density of 9.4 cpi (characters per inch) but greater cpi is possible. It is important to remember that the narrow element in a high-density code can be a problem to some scanners, which makes it imperative that all the equipment used to read these ultra high-density codes be checked for compatibility before any ultra high-density labels are specified. Because of its alphanumeric capability, it is possible to produce more than 102 million unique labels with only 5 characters.

Code 39 is accepted by AIM, NEMA, DOD, NASA, and most FORTUNE 500 companies.

Nine elements, three are
wide (4 spaces, 5 bars)

Applications For Code 39:

  • Healthcare
  • Graphics
  • Manufacturing
  • Automotive
  • Electronics
  • Paper
  • Transportation

Code 39 Options:

  • Increase the CPI
  • Convert from Base 10 to a higher Base

Increase the characters per inch:

In an eight character Code 39 bar code (plus start & stop character), increasing code density from 7.6 cpi to 17.0 cpi can generate a 55% reduction in width of bar code. Before specifying an ultra-high density code, be sure and match the scanner to the bar code.

Number of Characters CPI Width of bar code % Variance
8 + S&S=10 7.6 1.32" 100%
8 + S&S=10 9.4 1.06" 80.3%
8 + S&S=10 11.0 0.91" 68.9%
8 + S&S=10 14.0 0.71" 53.8%
8 + S&S=10 17.0 0.59" 44.6%

Convert from Base 10 to a higher Base for storage of variable data:

Heading 1 Heading 2
Base 10: 0-9 (all numeric)
Base 24: A-Z (all alpha)
Base 30: 0-9 and A-Z deleting A, E, I, O, U and Q
Base 34: 0-9 and A-Z deleting I and O
Base 36: 0-9 and A-Z (alphanumeric)
Base 43: 0-9 and A-Z plus -, .,$, /, +, %, and space

To illustrate the impact of changing from Base 10 to another Base, a 5-character bar code is shown:

BASE: NUMBER OF VARIABLES:
10 100,000
24 7,962,624
30 24,300,000
34 45,435,424
36 60,466,176
43 137,008,443

Testimonials

We wanted to thank you for an amazing job on our 12oz mockup pouches! We received them this morning and we are extremely impressed by how fast you were able to turn around the job to us.

Watson Label Products' effort, attention and hard work has been noticed and greatly appreciated. Vicor will remember this and take it into account moving forward.

Watson has been producing barcodes for Columbia University Libraries for almost a decade. Some of the special labels we have requested required several discussions, but Watson always came up with a perfectly workable solution.

I just wanted to say THANK YOU!!! I really appreciate you and the Watson Label associates for your great work and awesome customer service. It seems you do it so effortlessly. Thank you again.

I wanted to thank you and your team for all the work you have done on the Sun Care cans. I know we have been pushing some tough timelines and your team has come thru. Thanks for all your hard work and help!!

Watson Label Products is the best at what they do. I prefer Watson over anyone else.

I just wanted to thank you for all of your help, we received the barcodes and they were perfect. We look forward to our future business with Watson Label Products in the near future!

You guys are the greatest!!!!!!!

  HP Printers

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