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Bar code sticker Click to enter the Chinese version

A customer asked each recognized bar code printer is turned on when the paper,wastepaperbarcodestickers,adhesivebarcode labels how to save paper? A: bar code printer panel to enter the set, will change the value of MEDIA POWER UP FEED or NO MOTION. Attachment: The password is 1234. Label in order to save paper. Bar code labels barcode recognition principle: the width of the bar code is different, reflecting different rates of bars and spaces to achieve recognition, coding according tocertain rules (code system) compiled, and used to express a set of numbers or letters symbol information graphic identifier. The bar code is a set of different thickness, arranged according to certain rules of parallel lines spaced graphics.The barcode is generally very different from the reflectivity of the black bar (the bar) and white bars (referred to as empty)composition.Barcoderecognition system is composed of bar code scanners, amplification shaping circuit, the decoder interface circuit and computer system components.Identification bar code label is the reason: Because different colors of objects, the different wavelengths of visible light reflected from the white object that reflects all wavelengths of visible light, the black object absorbs all wavelengths of visible light is, so when the light source barcode scanner The diaphragm and the lens 1, the exposure to black and white bar code, the reflected light is focused by thel black bars with white bars and the strength of the differentreflectionopticalsignal,to the amplified output shaping circuit. White bars, black bars of different widths, the duration of the corresponding signals are also different. However, the output from the photoelectric converter and the corresponding bar code bars and spaces around electrical signals generally only 10mV, can not be directly used, and therefore first photoelectric converter output signal sent to the amplifier. The amplified signal is still an analog signal, in order to avoid the bar of the defects and blemishes caused the error signal, the amplifier circuit to be added after a shaping circuit, the analog signals into digital signals to the computer system can accurately determine the pulse shaping circuit into digital signals by the digital decoder, character information. It does this by identifying start and end characters to determine the bar code symbol scanning system, and orientation; digital signal by measuring the pulse to determine the number of 0,1 bar and empty out the number. 0,1 by measuring the duration of the signal to determine the width of the bars and spaces. This debate has been read by the bar code symbol and the number of bars and spaces and the corresponding width of the code system used, the corresponding codesystemaccordingtotheencoding rules, it will be replaced by the corresponding number of bar symbols, character information, through sent toacomputer system interface circuit for data processing and management, will complete the whole process of reading the barcodeidentified. Can not read the bar code of the analysis of several reasons: 1) the identification bar code is not set. 2) The bar code does not meet specifications, such as the lack of the necessary blank area, and empty the contrast is too low, the proportion of width and empty inappropriate. 3) direct sunlight, light-sensitive device enters the saturation region. 4) scan too far away or too close (scan bar codes from the ordinary should be between 8-20CM) or scanning angle that did not have a good (for bar code surface reflection, reflection light shines on a mirror inside the scanner window will interfere with scanning normal decoding device. therightscanner should scan angle of tilt angle with the bar code was). 5) hardware failure, contact the factory and sent for repair.

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