Dunno if this will work - 'cos I've only done it once, but it seemed
to work here. I have the same printer, and noticed the same problem,
but I also had reason to believe that the heads weren't clogging.
So, instead of repeated cleaning, I turned my attention to the
breather holes on the top of the cartridge. Being diabetic, I have a
handy supply of narrow sharp objects, but a pin or sewing needle will
probably do. Stick a pin down each breather hole. (Of course, remove
it again - you only want to ensure a good flow of ink, not block it
completely).
Since I did that, these carts have worked like a charm.
>> Stay informed about: Epson Stylus Photo 830 Printer - Excessive Head Cleaning