Patent ID: 6305794
Filing Date: 2001-10-23
Classification: B41J

Abstract:
A liquid container for containing liquid for ink jet recording and for supplying the liquid to outside with a negative pressure, comprising:a generally prism-like casing having a substantial air vent and having a corner portion formed by extensions of three sides of the prism-like casing;an inner shell for containing liquid therein, said inner shell having outside equivalent or similar to inside of said casing;a liquid supply portion for supplying the liquid from said inner shell to an outside thereof for ink jet recording;a pinch-off portion where said inner shell is pinched by said casing;wherein said casing and said inner shell have respective substantially flat maximum area sides which do not have said liquid supply portion or said pinch-off portion; anda deformation confinement member provided on said maximum area side of said inner shell except for a marginal portion thereof.