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How to buy thermal paper?

Thermal paper is devoted to the thermal printers and thermal fax paper, its quality directly affects the print quality and save time, and even affect the life of the printer and fax machine. Thermal paper is currently on the market in different ways, the state has not yet introduced national standard, many users do not know also how to identify quality thermal paper, which made for a lot of businesses and keep the inferior thermal paper to provide a convenient for the user losses, light save time shorter, illegible, damaged printer heavy. This article tells you how to identify the advantages and disadvantages of thermal paper, so as not to be fooled again. Thermal paper is generally divided into three layers, the bottom of the base paper, the second layer is a heat-sensitive coating, the third layer is a protective layer, primarily affect the quality of heat-sensitive coating or a protective layer,
If the thermal paper uneven coating will result when printing color in some places deep in some places light in color, print quality significantly reduced, if the thermal coating chemical formula is unreasonable, will cause the paper to save time becomes very short, good paper after printing can be saved (at room temperature, avoid direct sunlight conditions) for five years, and now you can save more 10-year long-term thermal paper, but if the thermal coating formulations unreasonable may only be saved for months.
Protective coating to save time after printing is also critical, it can lead to thermal coating absorbs part of the chemical reaction of light, slow deterioration of the paper, and can protect the sensitive element of the printer from damage, but if the protective coating floor is uneven, not only greatly reduce the thermal protection coating, even in the printing process will occur off the protective coating of fine particles, thermal printer friction components, resulting in damage to the printing thermal elements.
Thermal paper is generally sold in roll form, generally 80mm × Φ60mm, 57mm × Φ50mm other specifications of the most common, in front of the number indicates the width of the paper roll, the latter is the diameter, width is generally the case 1,2mm error has no effect on the use, because The printer prints are generally less than the edge, but the impact of the purchase by the roll diameter is relatively large, because the total length of the direct relationship between the roll paper roll rolls this price, it is demonstrated that the diameter is 60mm, but the actual Only 58mm case, the length of a roll of paper will be reduced by about one meter (reducing the specific number depends on the thickness of the paper), but the thermal paper roll on the market are generally marked X0, often less than the actual diameter X0. Note that there is a roll of paper in the middle of the diameter of a die, and some businesses will die tricks again, use a larger die, but also shorten the length of the paper a lot. The simplest way to buy a small can with a ruler to measure the diameter of the box marked what is consistent diameter, the diameter of the die also need to pay attention to the next, so as not to cause Quejinduanliang unscrupulous businessmen who buy lose fooled.