is also called thermally sensitive fax paper, thermally sensitive recording paper, thermally sensitive copy paper, and it is called thermally sensitive carbon paper in Taiwan. Thermal paper is a kind of processing paper, its manufacturing principle is in the base paper coated with a layer of "thermal coating" (thermosensitive layer). Although there are more than a dozen chemicals used in this layer, there are at least the following compounds: colorless dyes, a wide variety of which are commonly used as fluorescent compounds; Color reagent accounts for about 20% of the following, commonly used bisphenol, p-hydroxybenzoic acid; Sensitizing agent accounts for less than 10%, which contains benzene sulfonate amide compounds; About 50% of the filler, commonly used calcium carbonate (particles); Adhesive about 10% or less, such as polyvinyl acetate; Stabilizers, such as terephthalic acid diphenyl; Lubricants, etc. Therefore, the process is difficult, high technical requirements.
How to pick out and buy:
Thermal paper is specially used for thermal printer and thermal fax machine printing paper, its quality directly affects the quality of printing and storage time, and even affects the service life of printers and fax machines. At present the good and bad thermal paper are intermingled on the market, also did not come on stage on a national standard, a lot of users also do not know how to identify the quality of thermal paper, this is made for a lot of businesses keep inferior heat sensitive paper provides convenient, cause a loss for the user, light preservation time becomes short, writing is blurred, heavy damage printer. This article tells you how to identify the advantages and disadvantages of thermal paper, so as not to fall into the trap again. Thermal printing paper generally divided into three layers, layer as paper base, as the thermal coating, the third layer of protective layer, mainly for affecting the quality of its thermal coating or coating
If the thermal paper is coated unevenly, will lead to print some places darker, some local color shallow, significantly lower print quality, if the thermal coating of chemical formula is unreasonable, can cause printing paper to save time become very short, good printing paper after printing can save (under the condition of normal temperature and avoid direct sunlight) five years, are now more long-term thermal paper can save ten years, but if the thermal coating formula is not reasonable, may be only a few months.
Protective coating for after printing is also key for the lasting time, it absorbs some of chemical reaction that generates heat sensitive coating light, slow the deterioration of paper, and the thermal sensor can protect the printer is not damaged, but if the protective coating is not even, not only can greatly reduce the thermal protection coating, even in the printing process will appear tiny particles protective coating fall off, friction printer thermal element, lead to the damage of print heat sensitive components.
Thermal paper generally sell in the form of a roll, 57 mm x 80 mm x Φ 60 mm Φ 50 mm specifications for common, such as the Numbers in front of the paper roll, the width of the back of the diameter, the width of the average error of 1, 2 mm has no impact on the use, because the printer to print generally less than the edge, but the effect of the diameter of the roll to the choose and buy is relatively large, because the paper roll paper by the direct relationship between the total length of the roll of paper price, if that is 60 mm diameter, but actually only 58 mm, the length of the paper on the roll will be reduced by 1 m how much less depending on the thickness of the paper (specific). But the thermal paper rolls sold on the market are generally labeled X0, the actual diameter is often less than X0. Also need to pay attention to is a roll of paper in the middle of a tube core diameter, some businesses will again on the tube core, choose a larger tube core, the length of the paper to shorten a lot. The simple way to choose and buy can take a small ruler to measure the diameter and packing box marked diameter is consistent, the diameter of the tube core also need to pay attention to, so as not to give short weight to the illegal merchants and cause the loss.