An ink tank comprises a housing that defines a container for ink that is substantially free from a negative pressure producing material. In various embodiments, a non-porous capillary member is disposed in the container. The capillary member may be formed by part of the housing, for example, by a channel...http://www.google.com.au/patents/US6951387?utm_source=gb-gplus-sharePatent US6951387 - Ink tank with capillary member
