Information on Barcodes Generators & Scanners

Barcode Printers come in various types, including general-purpose laser and inkjet printers. Then there are printers that support multiple symbologies. They are called Thermal bar code label printers. General-purpose laser and inkjet printers cannot directly print barcodes. That is because these basic printers do not support bar code symbologies and are therefore upgraded to do so. They need to be programmed to support bar coding, which may entail addition of more features and fonts.

Barcode printers employ two major printing methods, namely Direct Thermal and Thermal Transfer. Both methods basically involve the same technique to print bar codes with difference in the use of ribbon. They make use of a print-head that applies heat to a surface that is pre-marked. Heated ribbon is used to produce long-lasting images in Thermal Transfer printing, while Direct Thermal does not use ribbon and instead prints the image directly on the label. In Thermal Transfer printing, a large number of materials may be used. This generally helps in creating durable images over a long period of time. Direct Thermal, on the other hand, helps in making put-away labels, receipts and other such small variety.

Ideally, barcode printers can print on labels that are specifically designed for the purpose. However, the printers are also capable of printing on fabrics like polyester. We have printers etching away prints on headbands and even synthetic materials. Quite contrary to popular perception, barcodes are not only black. Barcode printers can print in various colors, but black is generally preferred because a light color may end up with insufficient contrast between the bars resulting in unreadable barcodes.

Nowadays, several security features are available to ensure that there is no counterfeit coding by the printers. The latest thermal printers are capable of printing smart labels that contain radio frequency identification chips within the label media. These smart features go a long way in plugging any loopholes in barcode printing and provide a guarantee of authentication.

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Norman Woodland, a 27-year-old graduate student at Drexel Institute of Technology in Philadelphia developed the first code system that automatically read product information during checkout. Woodland and his friend Silver were awarded a patent for their application titled Classifying Apparatus and Method on October 7, 1952. Many experts are of the view that the Woodland and Silver bar code was the basis of what would soon become a global phenomenon.

In the beginning, barcodes were developed to store data in the spacing of printed parallel lines. The idea was to help grocery stores speed up the checkout process and keep better track of the inventory. However, the system soon picked up and became a success story.

Barcodes form the basis of identification in almost all types of businesses in the modern world. Barcodes are variously called as Universal Product Codes or UPCs. These are machine-readable codes and come in strips, generally comprising of a series of short black lines of varied thickness. These codes are read by optical scanners called barcode readers or scanned from an image by special software. A laser reader or scanner can translate the barcodes into the corresponding alpha-numeric digits, which are used to uniquely identify a piece of property. Barcodes are used world over to implement Auto ID Data Capture (AIDC) systems that improve the speed and accuracy of computer data entry.

At present, we have codes in several patterns of dots, concentric circles and hidden in images. Barcodes are provided by a body called Uniform Code Council (UCC). A manufacturer has to apply to the UCC for permission to enter the UPC system. An annual fee is charged for the service. In return, the UCC issues the manufacturer a six-digit manufacturer identification number. The manufacturer identification number is part of a standard 12-digit bar code.

Bar coding standards have brought about great precision, technical refinement and uniformity in the way business is conducted in the world. Throughout the world, most of the data entry is done much more quickly. All data is collected in real time. Bar codes have also led to the elimination of manual data entry and retrieval system. The coding has completely streamlined products, making the most effective use of human and physical resources.

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