The SSC Service Utility for Epson printers, will allow you to do simple or very advanced things with your Epson printer.
According to their site:
1) Work directly with CSIC in Epson Stylus printers cartridges.
2) Reset or rewrite any chip using special addon device.
3) Freeze internal ink counters.
4) Reset internal ink counters even with empty cartridges.
5) Separate cleaning of color and black heads for all Epson inject printers,
powerful cleaning mode.
6) Hot swapping of cartridges supported.
7) Resetting of protection counter (even then it is already full).
8) More then 100 different Epson printers supported
Many cartridges for Epson printers, have a counter chip
that locks the cartridge when it is "supposed" to be empty.
The SSC Service Utility, messes around with it.
Useful for using even the last drop of ink...
or refilling the cartridge on your own.