The principle of the Thermal Portable Label Printer Manufacturer is to cover the light color material (usually paper) with a transparent film, and the film will become dark (POS Printer Supplier, also blue) after heating for a period of time. The image is generated by heating and chemical reaction in the film. This chemical reaction is carried out at a certain temperature. High temperature will accelerate the chemical reaction. When the temperature is lower than 60 ℃, it will take a long time, even several years, for the film to turn dark; when the temperature is 200 ℃, the reaction will be completed in several microseconds.
The heat sensitive printer selectively heats the heat sensitive paper at a certain position, Fiscal Thermal Printer generating corresponding graphics. Heating is provided by a small electronic heater on the print head in contact with the heat sensitive material. The heater is arranged in the form of square point or strip, which is controlled by the printer logically. When driven, a graph corresponding to the heating element is generated on the thermal paper. The same logic circuit that controls the heating elements, as well as the paper feed, so that graphics can be printed on the entire label or paper.
The battery life is usually affected by three factors, one is the battery capacity, the other is the 58mm Thermal Printer length of the first charge, and the third is the power consumption when not printing. One charge printing length refers to the length of documents that can be printed when the printer is full of one charge; the power consumption when not printing will also affect the battery endurance. Some portable note printers will enter the sleep mode when not Wifi Portable Printer, at this time, the power consumption of the printer will be greatly reduced, which can effectively extend the use time of the battery. The battery endurance is not the higher, the better, because the stronger the endurance, the larger the battery capacity, the larger the volume and weight will be, and the best printing quantity according to the specific needs is selected. Generally, the length of one charge printing can meet the needs of two days is better. If the Thermal KIOSK Receipt Printer quantity is too large, it must also meet the printing quantity of at least one day.
POS Printer Manufacturer speed
Printing speed is an important parameter, especially for users with large amount of printing, which will seriously affect the time spent on printing. Each manufacturer has different test conditions for this indicator. Some manufacturers published this indicator as the test result when connecting to external power supply, rather than the test result when using battery power supply. Users had better judge according to the actual printing speed.
It can be divided into two types: heat sensitive and needle type. The paper needed for printing is also different. Ordinary paper is used for needle printing, and thermal paper is needed for thermal printing. It is recommended to consult the local tax bureau about whether to use thermal paper to print the invoice first. If not, needle printing is preferred. If not, thermal paper is generally preferred. WIFI POS Printer Wholesale, Prince, Zhike and other POS Printer Russian paper manufacturers have launched thermal printing paper that can be stored for 15-30 years.
Weight and volume
The lighter and smaller the better. Because the on-site staff has been walking or standing, it is very important for the user to reduce the load. The size of the volume depends on the way of use. If Portable Printer Supplier needs to be held in hand during the use, the volume requirements are higher.
Print width
There are two kinds of common printing width: 58mm and 80mm. 58mm portable note printer prints less content per line, 80mm prints more content, and the reading effect is much better. If only printing the list documents, the printer with a width of 58mm is generally used. If printing law enforcement documents or tickets, the printer with a width of 80mm is generally used.
According to the KIOSK Printers technology adopted, the portable bill printer can be divided into two categories: portable thermal bill printer and portable needle bill printer. Due to the complex structure of ink-jet printing technology and laser technology, the two widely used technologies in the office field have not yet been applied to the portable bill printer.
Very small size, the smallest portable note printer is realized by thermal technology, because the mechanism of thermal technology can be very small
Printing speed is fast, printing speed of portable thermal bills is 5-10 times faster than that of portable needle Receipt Printer Manufacturers
Low power consumption, printing the same content, power consumption is only 1 / 3 of portable pin bill printing
The Ios Printer Supplier quality is high, and the resolution of portable thermal bill printing is at least more than 200dpi, which is twice higher than that of needle printing 100dpi
Using high quality thermal printing paper, the handwriting can be stored for a long time, with a maximum storage life of more than 30 years
Portable pin note printer
Carbon free duplicating paper can be printed, and carbon free duplicating paper can be printed according to the impact principle of needle technology.
The printed documents can be saved for a long time. In fact, this advantage is not obvious. With the continuous progress of thermal paper technology, thermal paper with a storage time of 15 years is quite common. However, in the field of printing invoices, many people are not keen to use long-term thermal paper to print and issue invoices, so this feature is still very advantageous.
Beetroot powder belongs to a kind of processed food, but Cistanche Tubulosa Extract effect mainly comes from beetroot, so what are the functions of beetroot powder? Here are five points:
Honeysuckle Extract of senile dementia. Maintaining good blood circulation in the brain is a good way to help stimulate human cognitive ability, and even prevent the occurrence of dementia in the elderly. Matcha Green Tea Powder, the Research Report of Wake Forest University in Northern California pointed out that beetroot can slow down the deterioration of dementia. The reason is that beetroot can improve the vasodilation. The high content of folate is the main reason. About Glucosamine Hydrochloride can reach 70% of the recommended intake standard for adults every day.
Cancer prevention. Beetroot contains beet red pigment, which is an excellent anti-cancer antioxidant. In a 2011 study at Howard University in Washington, USA, it was found that beetroot can inhibit tumor growth of prostate cancer or breast cancer cells. However, the direct correlation of beetroot to cancer prevention needs further experimental confirmation.
Beetroot powder belongs to a kind of processed food, but Cistanche Tubulosa Extract effect mainly comes from beetroot, so what are the functions of beetroot powder? Here are five points:
Honeysuckle Extract of senile dementia. Maintaining good blood circulation in the brain is a good way to help stimulate human cognitive ability, and even prevent the occurrence of dementia in the elderly. Matcha Green Tea Powder, the Research Report of Wake Forest University in Northern California pointed out that beetroot can slow down the deterioration of dementia. The reason is that beetroot can improve the vasodilation. The high content of folate is the main reason. About Glucosamine Hydrochloride can reach 70% of the recommended intake standard for adults every day.
Cancer prevention. Beetroot contains beet red pigment, which is an excellent anti-cancer antioxidant. In a 2011 study at Howard University in Washington, USA, it was found that beetroot can inhibit tumor growth of prostate cancer or breast cancer cells. However, the direct correlation of beetroot to cancer prevention needs further experimental confirmation.
There are many methods to detect glutathione, such as iodimetry, DTNB (Diosmin Flavonoid), sodium nitroferricyanide, fluorescence, alloxan and HPLC. The above methods have their own advantages. When detecting GSH content, we can choose suitable, sensitive and accurate detection methods according to the actual situation.
Principle: DTNB reacts with glutathione to form yellow 5-thio-2-nitrobenzoic acid, with the maximum absorption peak at 412nm, while DTNB has almost no absorption peak above 400nm. Add a small amount of Ginkgo Biloba Extract to the sample containing glutathione, measure the absorption value of the reaction solution at 412nm, and then calculate the glutathione content according to the Pueraria Mirifica Extract.
Method steps:
Preparation of DTNB storage solution: dissolve 0.01 mol / L DTNB in 0.05 mol / L phosphoric acid buffer (pH7.0) to form DTNB storage solution.
Preparation of DTNB analysis solution: dilute DTNB storage solution with tris HCl buffer of 0.5mol/l and ph8.0 for 100 times, prepare DTNB analysis solution, place it away from light, and use it now [9].
Operation steps: take 0.5 ml of glutathione standard solution or sample solution to be tested (0.1 ~ 3.0 mol / L), add it into 1.5 ml NaOH solution with concentration of 0.15 mol / L, add 05ml of 3% formaldehyde solution, react at ph8.0 and 25 ℃ for 2 min, after the reaction, take 0.5 ml of reaction solution and add it into DTNB analysis solution, react at 25 ℃ for 5 min, and measure the absorption value at wave length of 412nm. According to the absorbance of the two, calculate the difference value, put it into the standard curve, and calculate the content of glutathione.
The chemical name of reduced glutathione (glutathione) is n - (n-l-γ - glutamyl-l-cysteinyl) glycine. The molecular formula is c10h17n3o6s, the molecular weight is 307.33, the melting point is 189-193 ℃ (Glucosamine Chondroitin Powder), the crystal is colorless, transparent and slender column, and the isoelectric point is 5.93. It is soluble in water, dilute alcohol, liquid ammonia and methylformamide, but not in alcohol, ether and Sodium Copper Chlorophyllin.
Pharmacokinetics:
Purple Sweet Potato Powder is a physiological factor with a wide range of physiological functions. It is synthesized in the cytoplasm, especially in the liver, and its metabolism is mainly in the liver. It is widely distributed in various organs of the body and plays an important role in maintaining the biological function of cells. Animal pharmacological test showed that the blood concentration of Purple Sweet Potato Red Color reached the peak after intravenous injection for 5 hours, and it could be measured in liver, kidney, muscle and other tissues after injection for 1 hour, and a small dose was found in the brain, with a half-life of 24 hours. It is mainly excreted from the kidney and eliminated by the kidney through direct glomerular filtration and non filtration mechanism of γ - glutamine transpeptidyl reaction.
Thermal Printer Supplies can be divided into thermal line dot system and thermal serial dot system according to the arrangement of thermal elements. As an early product, linear Panel Mount Thermal Printer is mainly used in some occasions with low requirements for printing speed, and has been used in its products by domestic authors. The line type thermal sensitivity belongs to the technology of Portable Printer Supplier. Its printing speed is much faster than the line type thermal sensitivity, and the fastest speed has reached 80mm Thermal Printer. To achieve high-speed thermal printing, in addition to the selection of high-speed thermal printing head, there must be a corresponding control board with it.
Thermal Kiosk Printer is lighter than ordinary printer and has single function. It is used for specific printing purposes, such as bills, labels, etc. It is suitable for carrying around and can also be used with batteries. There are higher requirements for the weight, durability and Dot-Matrix POS Printer time of the machine body.
POS Printer Supplier is mainly used for printing bills in various outdoor and non fixed workplaces. After 20 years of popularizing printing in fixed workplaces, all kinds of people who work outdoors will soon be
With the birth of the product, handwritten documents are discarded and printing is popularized. There are many people working in outdoor and non fixed places, such as traffic police, urban management law enforcement, industrial and commercial law enforcement and other on-site law enforcement personnel in government departments, vehicle loss assessors, bank tellers, meter readers and equipment in public institutions
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