Hauv lub neej niaj hnub no, thermal ntawv luam ntawv tau siv dav. Koj yuav tau luam cov ntawv txais nyiaj muag khoom hauv khw muag khoom, khw muag khoom yooj yim, khw muag khoom, thiab lwm qhov chaw uas koj yuav tsum tau yuav khoom. Thaum qhov kev thov rau cov ntawv thermal tau nce siab heev, nws kuj tau muab kev yooj yim rau ntau lub lag luam los tsim thiab muag cov ntawv qis dua thermal.
Hauv kev yuav khoom ntawm cov ntawv thermal, ntau tus tub lag luam tseem tsis paub yuav ua li cas txheeb xyuas qhov zoo ntawm cov ntawv thermal. Xaiv qhov tsis ncaj ncees lawm tsis tsuas yog muab cov neeg siv khoom cov ntawv txais nyiaj tsis zoo, tab sis kuj tuaj yeem ua rau koj lub tshuab luam ntawv. Tsab xov xwm no yuav pab koj nkag siab txog cov yam ntxwv ntawm cov ntawv thermal thiab yuav ua li cas xaiv cov ntaub ntawv zoo thermal ntawv.
Dab tsi yog ntawv thermal?
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), color developers (bisphenol, p-hydroxybenzoic acid), sensitizers, calcium carbonate, adhesives, stabilizers, lubricants, etc.
Thermal paper is generally used in specific thermal printers and thermal fax machines. At present, 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, high-temperature and low-temperature environments, and has a relatively long storage time.
As for why thermal paper will fade, it can be explained by its ingredients. Because the production principle of thermal paper is to coat some acidic chemicals on ordinary paper and separate them through a film. Under the condition of heat, the film melts, and the chemical substances mix to develop a color reaction. But the color reaction is reversible, and the colored products will decompose by themselves to varying degrees, and finally, the color of the text will gradually fade until the writing completely disappears on the white paper. Yog li ntawd, the text on the thermal paper is not stable, and it is easy to cause the content to be illegible. Especially in high temperatures and humid environments, the dyed product will accelerate the decomposition, and the handwriting will fade faster.
Tau kawg, 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. Tau kawg, 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, it uses heat energy to generate images much faster. Ntxiv rau, the surface of the thermal paper is very smooth and flat, which makes the printing process very smooth and noiseless, greatly improving the efficiency of cash register printing and reducing the waiting time in line.
3. Cost savings
In general, printing on thermal paper is less expensive than other printing methods. First of all, a thermal printer is a low-consumption printer, it does not need to use ink and toner, and in itself, its volume is small, and its price is much cheaper than ordinary ribbon printers. Compared with ordinary printing paper, the surface of thermal paper is coated, which makes the possibility of tearing the thermal paper very low, and saves paper to a certain extent. And it does very little damage to the printer, 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.
First of all, 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. Generally speaking, 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. Moreover, 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, Nws yuav tsis tsuas yog txo lub neej cia ntawm cov ntawv thermal, tab sis kuj yuav txhuam tawm tsam lub tshuab luam ntawv Cheebtsam thiab ua kom nrawm rau kev puas tsuaj rau lub tshuab luam ntawv.
2. Saib xyuas los ntawm cua sov.
Peb tseem tuaj yeem siv lub teeb dua los ua kom sov sab nraum qab ntawm cov ntawv thermal. Feem ntau, thermal ntawv nrog cov ntawv zoo yuav tshwm sim dub thiab ntsuab tom qab cua sov, Thiab cov xim thaiv yog zoo ib yam, thiab cov xim maj mam ploj mus ntawm qhov chaw mus rau ib puag ncig. Yog tias daim ntawv yuav siv sij hawm xim av xim av tom qab tau rhaub, nws muaj cov xim tsis zoo ntawm cov xim tsis zoo. Yog tias qhov dub ntawm daim ntawv muaj cov kab zoo lossis thaj tsis sib xws ntawm cov xim, nws txhais tau tias txheej tsis sib xws.
3. Siv lub hnub ci los soj ntsuam.
Peb tau npaj cov ntawv sib txawv ntawm cov cua sov, pleev xim rau lawv nrog lub highlighter thiab muab tso rau qhov chaw uas lub hnub ci. 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, t, all use thermal paper as printing materials. Yog li ntawd, 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.
