Tito,

First of all you were correct to begin using epson Enhance Matte if in fact you want to obtain better overall image quality. There are even better quality papers that are fiber-based matte stock which you might also want to consider from Epson's line for use with the 7600 including Epson Velvet and Epson UltraSmooth. However, to more fully advantage printing with all fiber-base matte papers you should switch to printing with the Matte Black ink as it will reproduce a denser maximum black in your prints. There is really nothing more to do but just change the ink from Photo to Matte and print using the same settings.

Epson Premium resin-coated papers are intended to provide the look and feel of typical photo snapshot machine prints. The resin-coating paper is just plastic applied to both sides of an inexpensive paper support, and then coated with a surface that supports ink. There are three surfaces to choose from in the Epson Premium papers for the 7600, Premium Glossy, Premium Luster and Premium Semi-Matte.

Uncoated papers are what are also referred to as plain paper, or just inexpensive lightweight wood fiber paper usually reserved for reproducing documents made up mostly of text.

David-
Thanks for the info. I would prefer to switch to matte black but my professor is waiting for the photo black ink to run out. Will enhanced matte give a better print than premium luster, or is luster considered of lower quality in the "print world"?

Tito,

In fine art circles and for serious sales resin-coated papers are held in lower regard. It is as much a concern for the longevity of the plastic coating, but also it is an aesthetic judgement. Plastic just looks and feels "cheap".

You will get a deeper black Dmax with PhotoBlack ink printing on one of the Premium Epson papers rather than on Enhanced Matte, otherwise the prints should be well matched although there is a distinct difference in surface appearance.