It all started in the 15th century when the skilled Johannes Gutenberg devised the movable type printing technology. This was the first major revolution that determined the course of culture and communication. Centuries later, we have the photocopier, the thermal printer and the laser printer.

A thermal printer produces a printed image by selectively heating coated thermal paper when the paper passes over the thermal print head. The coating turns black where heated and an image is thus produced.

In theory, it sounds easy, and even in practice this is easy, but only because others thought hard of how to make this mechanism possible. One of the reasons it’s possible and so easy is due to the thermal print head which is responsible for a line of controlled dots of heat which will produce an image in conjunction with heat sensitive ribbons or paper.

Since they are direct responsible for the actual image we can see on various items, mainly labels, the quality of the thermal print heads has to be one of the best. Let’s just say they have to cope with a very demanding and fast paced environment. Not properly maintained or badly manufactured, they will generate text that is difficult to read, unacceptable now when consumers have to be informed as most accurately as possible about the product they are about to purchase.

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