See http://www.epsonsettlement.com/index.htm for full details.  Following are excerpts:

What is this lawsuit about?

The Settlement resolves a class action lawsuit filed in California and other state courts. Plaintiffs allege that Epson inkjet printers and inkjet cartridges indicate that cartridges are “empty” and suspend printer function, even though substantial ink remains. Epson has denied and continues to deny the claims and any wrongdoing, but has decided to settle to avoid the cost and inconvenience of litigation. The Court has not issued any rulings about the validity of the claims.

All who, on or after April 8, 1999 and through May 8, 2006 purchased, leased or otherwise received any Epson inkjet printer and who purchased, utilized or otherwise received any inkjet cartridge for an Epson InkJet Printer. A complete list of qualifying printers is available on this website.

What are the settlement benefits for class members?

Settlement Class Members who have already registered a qualifying printer, or who register a qualifying printer by November 13, 2006 will automatically receive a $45 credit to be used in the Epson E-Store for each registered qualifying Epson InkJet Printer. Registered Settlement Class Members are not required to submit a claim to receive the $45 credit.

In the alternative, a member may reject the $45 credit and instead elect to receive either: a combination of $25 payable by check and a $20 Epson E-Store credit for each registered printer; or a discount of 25% off Epson E-Store purchases for a total discount of up to $100

How do I determine if my printer is covered by this settlement?

Please refer to the List of Qualifying Printers document on this website.