Time:2024.06.24Browse:1
telecommunications
Infrared (IrDA), Bluetooth (BLUETOOTH), WIFI (802.11b/g), RF2.4G wireless, RF433MHz wireless
Infrared technology was still used on many portable printers before 2007, but as laptops and mobile phones gradually phased out infrared technology, fewer and fewer printers used infrared technology
The wireless data communication technology of Bluetooth based mainstream portable printers has the advantages of low power consumption and directionless, but the disadvantages are limited transmission distance and cumbersome setup and pairing in the early stage
WIFI is a technology used by some portable ticket and label printers, which has the advantages of long transmission distance and no directionality. The disadvantage is that it has higher power consumption for printers that rely entirely on batteries to operate
RF2.4G wireless belongs to the free frequency band for civilian use. With the maturity of technology and the decrease in cost, it has been widely used in the field of computer peripherals and has also begun to be used in wireless communication for printers. Low power consumption, long transmission distance, with a maximum effective distance of around 30 meters.
The RF433MHz wireless frequency band has higher penetration compared to the higher frequency wireless frequency bands mentioned above, with a maximum effective distance of about 100 meters. It is often used to build small-scale private wireless networks, and printers can receive requests from mobile office devices within the network range at any time to perform printing
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