computer hardware, consumer electronics, electronic components

Label printer

A label printer is used to print a trade name, a price, an expiration date, etc. on a label sheet and thereby allow the printed label sheet to be affixed to a product. Such label printers typically include: a printhead, a label media cartridge, a microprocessor, a read-only memory (ROM) programmed with appropriate instructions therein to operate the microprocessor, a random access memory (RAM), a keyboard with letter, number, and function keys for entry of alphanumeric information requisite to printing the indicia on the label media, and a visual display such as a liquid crystal display (LCD) screen to convey information to a machine operator. In general, the label printers are of a design wherein a ribbon of label carrier sheet carrying a row of blank labels adhering peelably to the label carrier sheet is utilized and the blank labels are successively printed and issued with data printed thereon. Labels are generally provided in the form of a roll of web stock which is disposed within or on a label printer, where the web stock supports labels which have an adhesive backing releasably attached to one surface of the web stock, with the printing of the information to be carried out on a label surface opposite the releasably attached surface. Thermal and thermal transfer printers are well known label printers. Thermal transfer printing uses a heat-generating printhead to transfer an ink from a thermal transfer ribbon to a label media to form a label image on the media. The transfer ribbon having a heat transferrable ink layer is additionally interposed between the print head and the label so that non-sensitized labels may be printed. A microprocessor determines a sequence of individual thermal, typically resistive, printhead elements to be selectively heated or energized.


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