> It apparently turns out that the Epson 870/890/1270 printers with the
> chipped cartridges work by reading the cartridge info once upon
> installation, then that info is sent to the computer and then software
> is used to keep track of the ink levels until the cartridge is removed,
> at which point the new ink level info is written to it.
That is not my understanding of how the chipped cartridges work. The ink
use is read from the cartridge every time it is powered up, or an ink
cartridge inserted, and recorded back to the cartridge every time it is
powered down, or removed from the printer. It is not sent back to the
computer at all. That would make no sense to do it the way you suggest.
What is the source for your information?
BTW, I do not believe this link is correct:
