R3000 Refillable Cartridges or CIS
Not in that Epson model but I found (as have others) CIS systems can cause problems. I started using refillable cartridges in two different models about 4 years ago - they go in and out fairly regularly and no sealing problem to date. In any event, it is not exactly difficult to make new seals - they are only rings of thin plastic after all. I always refill every cartridge, even if only one is shown as needing to be replaced. I reset the chips on every one as well. Then when they go back, only one cleaning cycle takes place - instead of one for every cartridge replaced individually.
Zone8: Although I am a handsome genius, when I stand in front of a mirror, I vaguely recognise the ugly idjit standing on the other side!
LINK: For B+W with Epson 1400 (and other models) using black ink only PLUS other useful tips:
Cleaning DSLR Sensors, including Kodak DSLR Factory Cleaning method:
Solving back/front focus problems on Sigma and most other DSLRs
PDF format list of lenses you can print or download - covers Italian Flag YES/NO for DCS 14n but applies to others. http://www.photosnowdonia.co.uk/ZPS/ItiFlagLensList.pdf