I googled an interesting reference here:
Epson STylus 3000 Paper feed problem - fixyourownprinter.com
...the good parts which read:
Re: Epson STylus 3000 Paper feed problem by Tom Cipolla (4/10/07 7:03 AM) reply + / -
Bruce does not say what his paper problem is. My problem is the paper feeds in but is then rejected by the printer an spit back out again. Then the "paper out" light lights up. This happens more than half the time. Is this Bruce's problem? If not, does anyone know a solution to my problem?
Re: Epson STylus 3000 Paper feed problem by Paul-UK (4/10/07 7:34 AM) reply + / -
Probably either dirty or worn pickup rollers which are not grabbing the paper properly. Try cleaning them with a cleaner such as Platenclene, if this doesn't work then the rollers would have to be replaced.
Paul
Re: Epson STylus 3000 Paper feed problem by printerrepairpros (4/10/07 10:31 PM) reply + / -
Tom,
If you get past the paper pickup roller cleaning and it is still spitting out paper, my guess is that either one of the paper sensors is dirty\misaligned or the clutch gear which drives the paper pickup assembly is out of sync.
Hope this helps.
Re: Epson STylus 3000 Paper feed problem by Tom Cipolla (4/11/07 6:08 AM) reply + / -
Thanks to those who responded. FYI- Cleaning the roller just behind the print head is what fixed my problem. I first cleaned the paper pick-up rollers but that didn't help. I then cleaned the roller behind the print head, ran 30 sheets through and it never missed. The roller didn't appear to be very dirty based on the residue left on what I cleaned it with but that was clearly the problem.
Re: Epson STylus 3000 Paper feed problem by konadude (4/18/07 10:20 AM) reply + / -
I'm mechanically inclined, but how would I access the feeder rollers to clean them?
Thanks
Re: Epson STylus 3000 Paper feed problem by Tom Cipolla (4/18/07 10:35 AM) reply + / -
Well, that's a problem. What I did was lift the top cover (the opaque one with the Epson Stylus 3000 logo on it)which exposed approximatly one eighth inch of the roller along its length. I then used a cotton swab (Q-Tip)to clean the exposed area, turn the knob on the left side and continued.
I would have liked to taken the roller out or expose more of it to give it a good cleaning. Does anyone know how to do this?
Re: Epson STylus 3000 Paper feed problem by Tom Cipolla (9/25/07 5:13 AM) reply + / -
I used isopropyl alcohol. I have since purchased a "professional" pinch roller cleaning fluid called "Lasermedia RC-5" but the alcohol works just as well. You can buy it in any drug store.
Re: Epson STylus 3000 Paper feed problem by printerrepairpros (9/28/07 8:36 PM) reply + / -
This is usually a timing issue with the leading edge of the paper not reaching the sensor in the proscribed time. Two factors normally contribute to this problem. 1) Dirty or worn pickup rollers, or 2) the gear mechanism which drives the pickup roller assembly is out of sync. The second issue is too complex to describe here, a service manual is suggested.
Hope this helps
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Then they get into some serious technical dismantling stuff
Epson 3000 not recognizing film? (keeps loading & ejecting film back out) 
