Inkjet cartridge with tubular entrained ink chamber

摘要

An inkjet cartridge for use with a thermal inkjet printer includes a free ink chamber with a tube disposed therein, wherein the tube defines therein an entrained ink chamber. The tube can extend from the top of the free ink chamber to the bottom thereof. The tube is preferably laterally enveloped by the free ink chamber. The tube has an interior surface on which a longitudinal channel can be defined, and wherein the channel can be helical.