Hi, I am a brand new Epson 7900 user, and still getting familiar with the giant beast.
My previous printer is a 7 yr old HP DesignJet 130, which uses dye inks.
What I print is reproductions of my paintings, and in my art I use a lot of bright red. My HP printed the red perfectly - deep, bright, blood red, just gorgeous color.
My Epson refuses to. No matter how I tweak the Photoshop image, even if the red areas look perfect on my screen, on paper they look like toxic bright pink at best. Not at all what I'm used to.
Is this the sad reality of using pigment inks instead of dye inks - the reds are just not the same? Or is there something I can do?
I'm not sure if installing color profiles would make a difference, because red is the only color I am having trouble with - the rest of the colors are coming out printed just fine. (Or should I try the color profiles route?)
Currently I am using Epson Luster photo paper, have also tried Matte, and canvas. I am printing off my MacBook pro (OS-X 10.5.

.
Any suggestions? Thanks.
It is hard to say what could be the problem, something in your workflow or basic differences between the ink types.
What you could do first to settle the question about the basics: take the profile of the D130 for the paper that you used then and put it in an 3D profile gamut viewer together with the 7900 profile for Epson Luster Photo paper. Check whether the red gamut is worse in one of them. If the 7900 exceeds or is equal in the reds then you should change your workflow.
Switch the color management of the printer off. Select the right media preset (Epson Luster) for the paper in the driver. Use the color management of the application you print from, use the Epson Luster profile, make sure you have images with assigned profiles, preferably color spaces with a wide gamut, ProPhoto, AdoberRGB. Try out some different rendering types, perceptual, relative color metric, etc.
If this route does not bring an improvement then check your images on a calibrated, profiled (preferably wide gamut) monitor, plain and in softproof with said profiles with both the original and the prints under the 5000K viewing light next to the monitor. Somewhere the chain is broken between the painting and the print.
met vriendelijke groeten, Ernst Dinkla
Dinkla Gallery Canvas Wrap Actions for Photoshop
http://www.pigment-print.com/dinklacanvaswraps/index.html