A Japanese seller of refilled ink cartridges called Ecorica Inc. says it plans to sue Canon Inc. for violating Japan’s anti-monopoly law by intentionally changing specifications of the chips on inkjet cartridges to thwart third-party sellers that offer lower-priced options to consumers. Osaka-based Ecorica Inc. (www.ecorica.jp) has been selling recycled ink cartridges since 2003. It
