In today’s life, thermal paper printing is widely used. You will need to print sales receipts in supermarkets, convenience stores, shopping malls, and other places where you need to buy things. While the demand for thermal paper has dramatically increased, it has also provided convenience for many businesses to manufacture and sell inferior thermal paper.
In the purchase of thermal paper, many merchants still don’t know how to identify the quality of the thermal paper. Choosing the wrong one can not only give customers poor-quality receipts but can also damage your printer. Acest articol vă va ajuta să înțelegeți caracteristicile hârtiei termice și cum să alegeți materiale de hârtie termică de înaltă calitate.
What is thermal paper?
The so-called thermal paper is actually a kind of processed paper. It is coated with a layer of paint on the base of the original paper, that is, the color-changing layer. This color-changing layer contains more than a dozen chemicals, mainly including: colorless fuels (such as fluorescent compounds), dezvoltatori de culoare (bisphenol, p-hydroxybenzoic acid), sensibilizatori, calcium carbonate, adezivi, stabilizatori, lubricants, etc.
Thermal paper is generally used in specific thermal printers and thermal fax machines. În prezent, the printing methods of barcode printers can be divided into two types. One is thermal printing. The barcode labels printed in this way are easy to fade under high temperature, and the storage time is short.
The other is thermal transfer printing, also called carbon ribbon printing. This printing method can be resistant to compounds, medii cu temperatură ridicată și temperatură scăzută, și are un timp de păstrare relativ lung.
Cât despre motivul pentru care hârtia termică se va estompa, poate fi explicată prin ingredientele sale. Deoarece principiul de producție al hârtiei termice este de a acoperi unele substanțe chimice acide pe hârtie obișnuită și de a le separa printr-un film. În condiția căldurii, filmul se topește, iar substanțele chimice se amestecă pentru a dezvolta o reacție de culoare. Dar reacția de culoare este reversibilă, iar produsele colorate se vor descompune de la sine în diferite grade, si in sfarsit, culoarea textului se va estompa treptat până când scrisul va dispărea complet de pe hârtia albă. Prin urmare, textul de pe hârtia termică nu este stabil, și este ușor să faci conținutul să fie ilizibil. Mai ales în temperaturi ridicate și medii umede, the dyed product will accelerate the decomposition, and the handwriting will fade faster.
Desigur, the quality of thermal paper will also determine the speed of its fading.
Features of thermal paper
1. The handwriting is clear and readable
Thermal paper is generally used on various receipts, invoices, and barcode labels. We need to make sure that the printed content is legible to the client. The thermal paper does this perfectly thanks to its material and printing method. Desigur, the writing on thermal paper is not stable in a high temperature and humid environment, and the writing will eventually slowly fade, which is inevitable.
2. Save time
Traditional printers are very slow because they rely on ribbons to transfer ink from the ribbon to the paper. While thermal paper does not require ink to print, folosește energia termică pentru a genera imagini mult mai rapid. în plus, suprafața hârtiei termice este foarte netedă și plană, ceea ce face ca procesul de imprimare să fie foarte lin și fără zgomot, îmbunătățirea semnificativă a eficienței tipăririi casei de marcat și reducerea timpului de așteptare la coadă.
3. Economii de costuri
În general, imprimarea pe hârtie termică este mai puțin costisitoare decât alte metode de imprimare. În primul rând, o imprimantă termică este o imprimantă cu consum redus, nu trebuie să folosească cerneală și toner, și în sine, volumul său este mic, iar prețul său este mult mai ieftin decât imprimantele obișnuite cu bandă. În comparație cu hârtia de imprimare obișnuită, suprafața hârtiei termice este acoperită, ceea ce face ca posibilitatea de rupere a hârtiei termice să fie foarte scăzută, și economisește hârtie într-o anumită măsură. Și dăunează foarte puțin imprimantei, so you don’t need to spend money maintaining your printer.
Key points for identifying the quality of thermal paper
The quality of thermal paper will directly affect the printing quality and storage time, and even affect the service life of printers and fax machines. Thermal printing paper is generally divided into three layers, the bottom layer is the paper base, the second layer is the thermal coating, and the third layer is the protective layer. The thermal coating and the protective layer mainly affect its quality.
We can generally identify the quality of thermal paper by the following three methods.
1. Observe the appearance of the paper.
În primul rând, if we see that the thermal paper is very white or reflects light strongly, it means that its protective coating and thermal coating composition are unreasonable. There may be a lot of fluorescent powder added, which will make the storage time of the printing paper very short. În general vorbind, good thermal paper should be slightly greenish. If the surface of the paper does not look smooth or uneven, it means that the coating of the thermal paper is not uniform enough, which will cause the printed content to be dark in some places and light in some places. În plus, the protective coating can absorb part of the light that causes the chemical reaction of the thermal coating, slow down the deterioration of the printing paper, and protect the thermal components of the printer from damage. If the coating is uneven, it will not only reduce the storage life of the thermal paper, but also rub against the printer components and accelerate the damage to the printer.
2. Observe by heating.
We can also use a lighter to heat the back of the thermal paper. În general, thermal paper with good quality will appear black and green after heating, and the color blocks are uniform, and the color gradually fades from the center to the surrounding. If the paper takes on a brown color after being heated, it has a poor heat-sensitive coating formulation. If the black part of the paper has fine streaks or uneven patches of color, it means that the coating is uneven.
3. Use sunlight to observe.
We prepared different heat-sensitive papers, painted them with a highlighter and placed them where the sun shines. The purpose of the highlighter is to speed up the reaction of the heat-sensitive coating to light. By observation, the faster the blackening speed of the paper, the shorter the storage time, the worse its quality.
Extra tips
Thermal paper contains BPA and other chemicals. Although the toxicity is not high, long-term exposure still has certain harm. In order to avoid bisphenol A from invading our bodies in daily life, here are some suggestions for reference.
1. Please wash your hands as soon as possible after touching the thermal receipt. Do not touch your mouth or food with hands that touch the receipt.
2. Store receipts and other items separately to prevent other items from being contaminated with harmful substances.
3. Do not hand over receipts to children, keep them as far away as possible.
Thermal paper can be seen everywhere in daily life, whether it is cash register paper, fax paper, lottery tickets, movie tickets, etc., all use thermal paper as printing materials. Prin urmare, it is very important to purchase thermal paper with guaranteed quality. If you are still not sure about choosing high-quality thermal paper, you can directly come to us for consultation and purchasing of reliable materials.
