I'm going to experiment with this but have had problems with both dpis in the past and have seen banding with certain images at 1440, so have just stuck with 2880 mostly. I'm starting to think black-heavy images should be printed on 1440 regardless though.
That's what I see more often mentioned. The use of higher resolutions than needed just to overcome banding issues which is either the result of filthy heads, heads wearing out or bad alignment. While it gives slower printing speed and longer drying so not bad for your case at the same time the inkload can be higher depending on the Epson model. That higher ink load doesn't have to deliver a better Dmax though and asks for longer drying times. Most of what I printed in the past on Epsons could be done with 720 dpi and the prints could be stacked without problems.
No mention is made of the paper you use. Matte papers that smudge when taken off the printer isn't something I did experience with any of the Epsons or the HP.
Can the coating actually take that load of ink ? Isn't there another reason like the head being filthy and carrying over that filth to the transport rolls ?
Lines where the matte black surface is touched by the corner of another print shortly after printing or worse by fingernails are just a thing you have to live with and make sure it doesn't happen. Dried prints can get the same marks.
Depending on the size you could get a secondhand silkscreen drying rack (large prints) or possibly an old air dryer belt as used for analogue photo prints. Equipment that became obsolete as a result of the inkjet revolution. I have similar equipment here but it is seldom that I needed it for inkjet printing. Some cheaply coated canvas rolls that dry badly, a backlit film that gets an overdose of ink for saturation will go through my silkscreen drying tunnel, nothing else. There's a hair dryer cap on a carton box to speed up the drying of proofs and targets to get the color fix faster.
Try: [a href=\"http://groups.yahoo.com/group/Wide_Inkjet_Printers/]http://groups.yahoo.com/group/Wide_Inkjet_Printers/[/url]