Patent ID: 7762651

Claim:
A fluid reservoir for use in a printing device comprising: a housing at least partially forming at least one chamber therein that is configured to hold a fluid; an inflatable bag arranged within said chamber; a resilient member arranged within said chamber and configured to compressively contact said inflatable bag; a bubble port leading through said housing into a first region of said chamber and fluidically coupling said chamber to atmospheric gas external to said housing; and a bubble director arranged within said chamber at least partially along an inner wall surface of said housing above said bubble port and configured to direct at least one bubble of said gas from said first region to a second region of said chamber, said bubble being formed within said fluid within said first region upon said gas entering said chamber through said bubble port, wherein said bubble director maintains a path between said first and second regions, and said path is at least partially enclosed by said inflatable bag and said resilient member when said inflatable bag is fully inflated and said resilient member is fully compressed.