The inkjet unit has several ink tanks.
Unlike cartridges that are disposable, the tanks are stationary and refillable.
They last for as long as the printers lifetime.

They also hold more ink than cartridges do.
Thats one reason why ink bottles are cheaper than ink cartridges.
Cartridge-Free Printing
What makes many consumers dislike ink cartridges is their prices.

Most importantly, the ink tanks make it possible for you to spend less money to buy the ink.
Transparent Ink Tanks
Ink cartridges are usually placed inside the printers.
Thats because the container that holds the tanks has a semi-transparent side.

Wi-Fi Direct
This is a connectivity option that doesnt require a wireless access point.
Compatible mobile devices and the Epson L455 can connect to each other by establishing their own ad-hoc networks.
What is meant by compatible devices here are those devices that support the Wi-Fi Direct technology.
Devices that dont support it wont be able to take advantage of this L455s specific feature.
The reason is because of the ink pads in the printer.
Just like the rest of the components, it has a usable period.
Epson L455 Resetter is the one that gives you the control to override the blocking mechanism.
Once the counter hits a specific value, the blocking mechanism is triggered.