Five Thermal
Posted on Friday, August 29th, 2008 at 5:52 pmFive Thermal
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| Inks For You |
Portable Thermal Printers for your Printing Needs
Portable thermal printers are a lightweight and easy-to-carry around thermal printer for a variety of thermal printing tasks. These printers are used in various fields where printing can be carried out conveniently from handheld computers or gadgets. Some examples where portable thermal printers can be used are for printing receipts, tickets, readings from gadgets and devices, amongst many other uses.
Portable thermal printers are the ultimate solution in printing for custom as well as routine tasks in retail stores and small business. Many of these printers have Bluetooth connectivity that gives them true portability. Other areas where thermal printers are routinely used are Point of Sales, coupon printing, barcodes, labels and lottery applications.
In many cases, portable thermal printers come with equipment that requires their own printing. In this case, these printers have their own printer driver that runs with the proprietary software that comes installed with the device. These printers usually print on thermal paper rolls, which are installed within the printer assembly itself.
The technology that is normally used for printing in these printers is normally direct thermal printing. Thermal technology is widely used because of its high print quality. The printers are also low maintenance and durable. These printers do not use ink. Therefore, there is no smudging. Operational costs are also low, because there is no need for ribbons or cartridges except in cases where portable thermal printers are required to print photo identity cards, phone cards, and such, where the technology slightly differs and thermal transfer printing is used.
The direct thermal method utilizes a heated printhead under which a thermally sensitive paper passes through. This thermally sensitive paper is actually chemically treated which darkens as it passes under the heated print head. The advantage of using a portable thermal printer that utilize thermal transfer printing is that they are cheaper to use and operate compared to other printers like inkjet printers, laser printers, and even thermal transfer printers.
The text and images that are printed using thermal printers can fade over a period. Alternatively, the image can become darkened if it is subjected to a lot of heat or light. In either case, the text or image becomes unreadable. Therefore, portable thermal printers are usually used for applications where the life of the printout is not long.
Portable thermal printers are easily available at office supply stores. You can also buy them at reputed online stores on the Internet. Sp, let's hope that you find the portable thermal printer that meets your printing needs.
About the Author
If you require portable thermal printers of reputed brands, why not contact www.pospaper.com. We are America's industry leader for POS and retail equipment, paper, and ribbon supplies.
physics thermo?
The energy absorbed by an engine is five times greater than the work it performs.
(a) What is its thermal efficiency?
in %
(b) What fraction of the energy absorbed is expelled to the cold reservoir?
Efficiency = (output/input) * 100
Since Input = 5 times the output, then
Efficiency = (1/5) * 100 = 20%
**********************************************
Since efficiency is 20% or 1/5, then the energy expelled to the cold reservoir = 1 -1/5 = 4/5.
