A conventional bar code is a parallel line pattern in which black bars and white bars having a large difference in reflectance are arranged. When the barcode label printed by the machine cannot be scanned by the barcode scanner, in addition to the scanner failure, it is also necessary to consider whether the printed barcode has a problem.
What are the issues to be aware of when printing barcode labels?
1, barcode color
Bar code color is one of the factors that affect the normal reading of the scanner. The conventional bar code scanner light source is generally set to a red light source with a wavelength of 630 to 700 nm, which is incident on a bar code surface of different materials and colors, and the reflection effect is also different. Among them, black absorbs red light, and white reflects red light. Therefore, users mostly use white labels and black ribbons to print barcodes.
Because some users have special requirements on the visual effect of packaging, and also choose other color combinations, here editor Shenzhen Yuanjingda friendly reminder: bar code printing and printing should pay attention to the color according to the nature of the color, usually the color of the red light reflectance is yellow, Orange, red, light brown, etc.; and black, green, purple, cyan, etc., have low reflectivity to red light.
2, print media type
The color, opacity and gloss of the bar code print media have a certain impact on the reading of the bar code. When the bar code is read, the scanning light source is generally incident at an angle of 45°, and the reflected light collecting angle is 15°. If the reflected light exceeds the range of 15°, the reflected light signal cannot be collected, so the printing medium is required to have good light. Scattering characteristics, but no specular reflection
3, barcode print quality
The black and white lines of the barcode are the information sources for scanning and reading. The printing effect should be clear and complete, with no obvious defects and ink spills. When the barcode is printed, if the barcode is slightly defective and overflows, it can be judged that the print quality is not good, but the scanner with better performance can still be read out; if the barcode is defective and the stain range is large, even the print is defective. Or the boundary of the label is exceeded, indicating that the barcode is unreadable. It is recommended to detect the device that prints the barcode.
4, barcode scaling
Part of the long bar code is limited by the width of the bar code label, and must be reduced in proportion to complete printing. This may cause the ordinary low-precision scanner to fail to recognize the bar code with high density, which may cause mismatch between the scanner and the bar code. The editor recommends that before printing, the user first prints the barcode label with a short data content to detect the applicability of the scanning device.
5, barcode code system type
Generally, the common code system on the market is code128, code39, code93, EAN-13, etc. If the code system of printing is not within this range, the scanning function of the other code system of the barcode scanner needs to be turned on.
An Internet of Things high-tech enterprise with automatic identification technology as its core in Shenzhen, the company always adheres to the customer demand-oriented and is committed to providing customers with a full range of bar code equipment application services.
Main business
Internet of Things barcode application: mobile payment core hardware barcode scanning module, intelligent community core hardware 2D scanning module, industrial machine vision system, O2O Android hardware, RF RIFD, etc.
Industrial scanning applications: bar code printers, label ribbons, scanners/barcode scanners, data collectors, bar code software systems, etc.
Instant Dry AC is a dual-function Hair Dryer, for both wide-diffusion blow-drying via the Instant Dry System and a more narrow range with the standard setting. Featuring a powerful AC motor for long-lasting performance, and uncompromising drying efficiency with up to 30% less energy use.
AC Motor Hair Dryer
We've got you covered with the AC Motor Hair Dryer in hair care and styling you can be sure you'll be able to create the look you want.
Cheap Hair Dryer,Hair Dryer Machine,Ac Motor Hair Dryer,Dual Voltage Hair Dryer
Ningbo Meirou Electric Appliance Co.,Ltd. , https://www.mrhaircurler.com