Thermal paper roll was merely an expensive alternative to the standard bond paper that you put into your receipt printer. But the technology behind thermal paper has advanced enough that using this former alternative is now the most sensible choice. In many cases thermal paper is even less expensive than bond paper--plus it delivers better results!
Thermal paper rolls in the past is no longer true. While thermal tape used to be an uncommon alternative due to a short lifespan and high prices, it's now the most viable choice. Recent developments have led to better technology, including advanced chemical films and more durable substrata.
The thermal rolls of print media of this invention comprise a core/spindle and a sheet, preferably continuous, of a print medium of substantially the same width as the core/spindle. The sheet of print medium is wound around the core/spindle to provide a thickness of layered paper on the core/spindle of at least one half inch, measured from the periphery of the core/spindle to the outer layer of the sheet of print medium on the roll. At least one side of the wound sheet of print medium is marked with at least one impression which serves as an identifying mark. The "sides" of the roll of a print medium, as referred to herein, are where the edges of the wound print medium are exposed. The term "impression" as used herein includes shallow indentations as well as realignment of the edges of the wound print medium and realignment of the fibers within the wound print medium. In realigning the edges and/or fibers of the wound print medium, there may be no indentation which is detectable and in certain embodiments, no indentation at all.
Any thermal roll of print medium which is subjected to a roll press in its manufacture can be employed in the methods of this invention. Preferably, the impressions are formed when the roll is pressed to align the wound print medium with the spindle.
Thermal Printer Paper Roll
The paper is impregnated with a solid-state mixture of a dye and a suitable matrix; a combination of a fluoran leuco dye and an octadecylphosphonic acid is an example. When the matrix is heated above its melting point, the dye reacts with the acid, shifts to its colored form, and the changed form is then conserved in metastable state when the matrix solidifies back quickly enough.
Most direct thermal papers require a protective topcoating to:
Reduce fading of the thermal image caused by exposure to UV light, water, oils, grease, lard, fats, plasticizers, and similar causes
Provide improved printhead wear
Reduce or eliminate residue from the thermal coating on the thermal printheads
Provide better anchorage of flexographic printing inks applied to the thermal paper
Focus the heat from the thermal printhead on the active coating.
Thermal paper is cleaner than your standard ink, produces a crisper resolution, and is ultimately cheaper. Though thermal paper used to be considerably more expensive, the price has come down in recent years, thanks in part to better technology that allows its manufacturers to produce it at a more reasonable cost. Moreover, a thermal paper roll is quieter than bond paper, which is an added bonus for any shopper at the end of a long day.
You can buy thermal paper from your local office store and pay more, or you can order it in bulk along with your POS paper and other cash register supplies. Purchasing over the Internet also gives you added convenience -- you can modify your order with just a few mouse clicks, buy additional products, or speak with customer service about any questions you might have. So don't spend precious hours sitting in your car trying to cram in a quick stop at the office store between work and home. Go online and save your money--both on thermal paper and other office necessities.
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