Bar code scanner laser and red light advantages and disadvantages, the two of the scanners which is better, you should know how to choose after reading the following excellent comparison, or consult Chuang Rongxin online customer service, she will give you according to your needs You recommend the right scanner model.
First, the principle of illumination
The laser scanning head refers to the principle of LASER laser illumination, and the scanning width can reach 25cm;
The red light scanning head refers to the red light emitting principle of the CCD, and the scanning distance is generally within 8 cm;
Second, the light comparison
The light emitted by the red scanner is a thick line (thick in the middle, thin at both ends). The farther the scanner is from the bar code of the scanner, the thicker the red light is, the lower the scanning success rate is. Scanning the bar code with a red light gun is generally Scan the barcode at close range. The laser scanner emits a very thin, uniform laser line. The laser gun has a much better reading ability than the red light gun. The laser gun can scan far from the bar code. The laser scanner with good performance can even be half. Scanning outside the meter, and the red light will not exceed 20 cm at the farthest.
Third, the advantages
1, laser barcode scanner
1) The laser scanner can be used for non-contact scanning. Generally, the laser scanner is the only choice when the reading distance exceeds 30cm.
2) The laser scanning bar code has a wide range of density, and can read irregular bar code surface or read through glass or transparent adhesive tape, because it is non-contact reading, so it will not damage the bar code label;
3) Because of the advanced reading and decoding system, the first reading recognition has a high success rate, the recognition speed is faster than the light pen and the CCD, and the bar code recognition effect of the printing quality is not good or fuzzy;
4) The bit error rate is extremely low (only about one in three million); the laser scanner has good anti-shock and anti-drop performance.
1, red light barcode scanner
2, the price is cheap, the scanning light is relatively thick, and there is a better user experience in actual use.
Fourth, shortcomings
1. The price of the laser barcode scanner is relatively high, but from the sum of the purchase cost and the usage fee, the laser scanner and the red scanner are not much different.
2. The distance scanned by the red bar code gun is closer, and there are some requirements for the color of the bar code. If the bar code is printed, it cannot be red.
Laser bar code scanners are relatively expensive in a variety of bar code scanners, but they offer the highest range of scanning capabilities and are therefore more widely used in various industries. However, most of the time, the choice of scanning guns does not need to pay too much attention to price and brand, because the price of laser scanners has also been affected by the market competitiveness, and the market price is also very low, from hundreds to more than 1,000. Wait. So you only need to choose the scanner that best suits your price, regardless of laser or red light.
How to make coffee without a coffee machine.
If you don`t have a coffee machine in your home or office and don`t want to go out, just use simple tools to make your own coffee!
Common express coffee brewing methods: portable espresso machine, ice drip coffee, French press pot, Vietnamese pot.
Portable espresso machine: manual operation, one of the first-choice machines for drinking espresso,
French press pot: It is convenient and simple to operate. It is a must-have for business trips and the first choice for office. The taste of brewed coffee can best reflect the flavor of single-origin coffee.
Ice drip coffee machine: During the making process of ice drip coffee, you don't need to stare at it all the time. When the time is enough, you will find that a pot of coffee is ready to drip.
Vietnamese pot: It is a kind of drip coffee. Vietnamese pot coffee can adjust the concentration of coffee, and its flavor is complex and flavorful.
There are still many coffee appliances, and you need to brew coffee according to your own requirem.
Coffee Maker,Ice Drip Coffee,French Press Pot,Portable Espresso Machine
Jiangmen Chang Kun Industrial Co., Ltd. , https://www.changkun-houseware.com