Barcode Printing and Encoding - High Speed Data Printers

By: Printing Plastic  09-12-2011
Keywords: Bar Code

A bar code symbol is a parallel pattern of variable width bars and spaces.

Symbologies is the industry term describing the inviolable rules that specify the way that data is encoded into that pattern of bars and spaces.

Plastic Resource offers both Thermal and DOD (Drop-on-Demand) bar code printing for the following barcodes: Code 39 - Code 3 of 9, Codabar, UPC-A (UPC Version A) and Code 128.

Code 39 - Code 3 of 9
The most widely used non-retail barcode is Code 39. Each Code 39 character has nine elements, four spaces and five bars. Of the nine, three elements are wide and six are narrow. The start/stop character is generally represented in the human readable text as the * character.

Codabar
Commonly used in libraries, blood banks and air parcel express applications, Codabar is bar code format in which 4 bars and 3 spaces represent the digits 0-9 and certain special characters. 4 unique start/stop codes, variable inter-character spacing, and code density of up to 10 characters per inch characterize the code.

UPC-A (UPC Version A)

There are 12 digits in the UPC Version A (UPC-A) symbology; the

assigns the first 6. They include the Number System Character (NSC) and the Manufacturer's Number. The following 5 digits make up a code identifying the product, and are called the Product Code. The final digit is known as the Modulo Checksum Character or Mod Check. The value of the Mod Check is mathematically derived from a formula that uses the other numbers encoded in the symbol/barcode.

Note

: Plastic Resource will provide a checksum formula to those of you wanting to generate your own checksum digit. Feel free to contact our Data Department for more information -

.

Code 128
Code 128 is a very high-density alphanumeric code; variable length, continuous code using multiple element widths. Each character has 11 modules, either black or white; 3 spaces and 3 bars. Code 128 employs 3 different character sets (A, B, or C) each of which contains 106 different printed characters. 3 different start characters identify which character set is being used, and 3 shift codes permit changing character sets inside a symbol.

While most scanners read most types of bar codes, in the end the choice of which bar code to use is usually not up to the end user. Either the environment the bar codes will be used in mandates A over B, one's trading partners expect one over another, or you're required to adhere to a specification which specifies exactly which bar code to use (often along with what size and shape and other details as well).

anytime.

Plastic Resource houses state-of-art-technology capable of high-speed printing, the highest visual resolution printing, and 100% in-line camera verification for an added level of data security.

Keywords: Bar Code

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