Paper doesn't feed properly R2400

SOURCE: Paper Doesn't Feed Properly

Only one roller is working properly. I have had this problem before. It could be because the rollers are worn out or not attached properly.

SOURCE: paper feeds crooked

Sounds like a blocked paper path, paperclips , staples , bits of paper etc can drop into the sheet feeder entry and get stuck in the paper rollers.Look and see if you can see anything in there, if not try feeding a piece of thin card back through the printer from the front (ie in reverse of the normal paper travel) be careful and you may be lucky and drive out the obstruction, if not you will need to strip it down to investigate further

SOURCE: epson r2400 won't feed paper

I had the same problem, then found these instructions for cleaning the feed roller: http://www.museofineart.com/files/RollerCleaningProcedureRev2.pdf I used the paper towel method and it's working fine now with no issues. 

SOURCE: Paper won't feed into printer

I have taken a piece of cardboard, like the ones you get with a new shirt, size it to 8.5 x 11, and tell the printer to print a test page. hand feed the cardboard thru, and most times it will clean out the residual paper pieces stuck in the internal rollers. I have used this method several times and was successful 99% of the time. It isn't rocket science, but It may work. You will probably have to push the cardboard thru, but do not force it to much. It will not go thru easily on its own. Just a suggestion.

SOURCE: paper won't feed properly and

There are a couple of possibilities. First is a little piece of paper could be stuck somewhere along the paper path and is causing one of the feed rollers to not grab the paper evenly, which will make the page twist on most of the models in this series, if you pull the paper out and take a flashlight and look up the feed path you will usually see anything in the feed path near/on the rollers at the top.
Another possibility is one of the feed rollers is old and worn out (If machine gets heavy use) and it will cause same issue.
Also light paper stock can sometimes be too thin for the rollers to grab properly and cause it to twist and slide around. This is usually more of an issue with gravity/drop feed printers but can also occur on front feed style too. Usually 20lb stock is good, but if thats doing it, you can try going to a 24lb.