The new head design should provide somewhat improved performance. I remember reading about its development and it looked like it would enable some improvements tho not sure we're seeing those yet.
Unlike HP or Canon, Epson's printhead is not as much a 'consumable' so should not need replacement very often. Still, would be nice if it was as easy to replace as on the competition and if they used the Canon style of ink management that has that intermediate buffer volume to allow cartridge swapping on the fly without risking an air bubble in the line causing a dropout.
Inability to remap a bad nozzle is an issue if you don't deal with dropped nozzles but, as above, Epson heads should have much greater longevity. Keeping all the nozzles firing is another issue. 8-\
ya, really irritating that MK & PK have to be swapped. It's be really nice if they had their own nozzle pair, then they could add the violet ink and run a full 12-color head with no matte/gloss change-over issues.
Agreed LK & LLK are goofy. otta be Gy and LGy
As for the "clogging." I have a theory.
my R3000 can sit for MONTHS without dropping a single nozzle.
my 9900 can drop a nozzle anytime it sits for more than about an hour. Tho I've had it parked as long as a month without dropping a nozzle it's quite rare.
Why the difference when the inks are probably about the same?...
Ink cart's in the R3000 are located above the head.
Ink carts in the 9900, and similar, are considerably below the head.
so, if the capping station doesn't seal perfectly (it's not likely to) and the control valve body behind the head is less than perfect in sealing when you shut down, hystrostatic pressure may cause the ink to slowly flow out of the head and back towards the cart's. You don't have head 'clogs' so much as air voids inside the head. This can then allow the nozzle area to dry out and cause a nozzle clog if left dry for a long time. Dry-out is not likely the issue in a short production halt (when the cart's are de-pressurized) but flowback coulid be.
Anyway, having to blow a bunch of ink to get all nozzles working is like washing a dirty car with gasoline... inefficient and costly!
Making sure the head is clean, the capping station gasket is clean, the wiper blade is clean, the wiper blade wiper is clean...
The ambient humidity is at least moderate and dust to an minimum are all things that may help improve the overall clogging performance of the 900 series.
I think it'd be better if they could re-locate the ink cart's to be at the same average level as the head, or slightly higher.
My 9900 has now been sitting since about July. Ask me how it goes when I restart in early October. I no longer bother turning it on to run a test print... it doesn't help.