Eugene's observations

Due to lax patent limitations Canon and Epson cartridges are oft imitated at a relatively cheap price. But the chip in Epson machines counts the cleaning cycles and assumes that the print head drain sponge must be saturated after a set number of cycles. At that time you have to 'repair' your printer to allow it to continue working - an expensive option. You may like to simply clean or replace the sponge yourself, or leave it to potentially over fill.

You may want to free yourself of the nag screens that warn you when the printer thinks you are running low on ink.

Assuming you don't mind risking any warranty that remains on the printer, an (unapproved by Epson) solution is to reset the chip's counter using the free SSC utility available at
http://www.ssclg.com/epsone.shtml