A printer—similar to headphones or computers—requires a signal from an exterior device, sending it a message. ... Like most other devices, printers accomplish this through one of two methods: a WiFi network or Bluetooth. One of the most common technologies enabling wireless printing is WiFi network connectivity.
Can I use wireless printer without Internet?
Even if Web access is unavailable, Wi-Fi-enabled printers can be used as normal, provided the router and the wireless adaptors on the network are functioning correctly.
Do printers need to be connected to Wi-Fi?
Most modern printers have Wi-Fi capability, allowing you to set them up without connecting to any of your computers. The printer will need to be in range of your wireless router in order to connect to it.