POS printers are special printers that also have a special role. Usually, special office equipment used by POS cash registers is used in places such as restaurants, supermarkets, and convenience stores. Therefore, when purchasing, there are different ways to purchase different functions. POS printers mainly use three printing technologies: stylus printing, thermal printing, and thermal transfer printing.
Parameters to know before purchasing a POS printer
Before selecting a POS printer, the user can understand several main technical parameters, and then select the appropriate equipment according to the requirements of the actual application. For the system of the ticket printer, the resolution is to correctly detect the width of the narrowest stripe read. When selecting a device, it is not the higher the branching rate of the device.
Instead, the reading device with the corresponding resolution should be selected according to the density of the ticket used in the specific application. If the resolution of the selected device is too high during use, the influence of stains and deinking on the strip will be more affected. Seriously, scanning depth of field refers to the difference between the farthest distance that the scanning head is allowed to leave the surface and the closest point to the surface, while ensuring reliable reading.
The scanning speed refers to the scanning frequency of the scanning beam on the scanning track per unit time. The first recognition rate indicates the ratio of the number of labels read in the first scan to the total number of scanned labels. From the practical application point of the printer, it is of course All scans can pass.
That is, the effective working range of the ticket printer. Some ticket printer devices do not give the scanning depth of field indicator in the technical index, but give the scanning distance, that is, the shortest distance that the scanning head allows to leave the barcode surface. The scanning width index refers to The physical length value of the information that the scanned beam can read for a given scan distance. 
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