Printing problems on Epson CX6600

[TopPop]

Okay, so here's a tough one for me...
I worked with some photos in PS 7 for my friends' wedding invitations. Here's what I did: curves, color balance, saturation, sharpening.
So what's the problem? Nothing will print out on his Epson CX6600 printer like they look on the computer! I did the work on a separate computer, and gave the CF card to him to print (he has PS CS). Everything is MUCH darker when printed out! Also, when he printed of the UNedited photos, they looked like the unedited versions on the computer, so I know that it's not his monitor.
I don't really know what it could be. Would the curve tweaking that I did mess anything up even though the pictures looked fine on his monitor?
Any advice would be much appreciated! Thanks!
Chris
P.S. He tried printing from PS with AND without color management on, and the printed versions looked exactly the same. :scratch:

 

[ksmattfish]

This forum is about the old fashioned, wet darkroom, so hopefully a mod will come along soon, and move this post.

I don't know much about printing with inkjet, but it would seem to me that there would be a big difference between a file that would look good on a computer screen, and one that would print out good on a piece of paper. A printable image file probably looks low contrast, and lighter, at least in the shadows.