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Friday, February 25, 2011

Barcode Printer.

A Barcode printer is a computer device for printing barcode labels or tags that can be attached to objects.

The most common barcode printers employ one of two different printing technologies. They are Direct thermal printers and Thermal transfer printers. Direct thermal printers use a printhead to generate heat that causes a chemical reaction in specially designed paper that turns the paper black. Thermal transfer printers also use heat, but instead of reacting the paper, the heat melts a waxy or resin substance on a ribbon that runs over the label or tag material.

Direct Thermal Printers.

A low- to medium-resolution printer that uses a type of coated paper that darkens when heat is applied to it. The paper is passed by a line of heating elements that burn dots onto the paper. This is typically used in bar code printers and other small specialty printers. It was widely used in early fax machines.

Thermal Transfer Printers.

A thermal transfer printer is a printer which prints on paper (or some other material) by melting a coating of ribbon so that it stays glued to the material on which the print is applied. It contrasts with direct thermal printing where no ribbon is present in the process.

Barcode readers are just an other computer hardware, that can connect with a computer, via USB, PC Slots or any medium.


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