Provided is an ink refill unit for a print engine. The unit includes a body assembly defining an ink ejection port at one end thereof, a compressible tank located inside said body assembly, and a compression arrangement for compressing the bellows tank. The compression arrangement includes actuation...http://www.google.de/patents/US7802879?utm_source=gb-gplus-sharePatent US7802879 - Ink refill unit for a print engine having a compression arrangement with actuation means operable by a controller of the print engine
