The original ink cartridges are insanely expensive.
This is the sole reason that cause many home and business users to use third-party brands.
The ink system relies on ink tanks that users need to refill manually when they run out of ink.

This disadvantage can be off-putting to a lot of consumers.
Those with less budget are therefore more likely to buy cartridge printers than tank printers.
Those who often scan or copy should use a printer that has an ADF instead for maximum productivity.

Epson Connect
The L4150 supports Epson Connect.
This is an Epson service which include a number of additional features that expand the printers web connection capability.
There is also Remote Print Driver which basically allow any computer to control the printer remotely over the internet.

The ink is absorbed by the ink pad as soon as it arrives in the compartment.
To keep track of the ink pads remaining capacity, a counter is assigned to it.
The counter triggers an alert when it gets past a certain limit which automatically locks the printer from printing.
In this situation, Epson L4150 Resetter can be a handy tool to have around.
However, cleaning the ink pad alone wont affect the counter, and the printer still wont print.
The counter needs a reset, and Epson L4150 Resetter can help you with this.