Patent ID: 7815299

Claim:
An ink cartridge comprising: a frame having an opening formed therethrough, wherein a center line of the opening is perpendicular to a plane on which the opening is formed; and at least one film connected to the frame, wherein the frame and the at least one film define an ink chamber therein, and the opening is configured to dispense ink from an interior of the ink chamber to an exterior of the ink chamber, wherein the film comprises a first portion, a second portion, and a third portion, and the second portion is positioned between the first portion and the third portion, and the first portion and the third portion are raised with respect to the second portion, wherein the first portion has a width and a length which is greater than the width of the first portion, and a distance between a first end of the first portion and a second end of the first portion corresponds to the length of the first portion, wherein the third portion has a width and a length which is greater than the width of the third portion, and a distance between a first end of the third portion and a second end of the third portion corresponds to the length of the third portion, and wherein a line intersecting a peak of the first end of the first portion and a peak of the second end of the first portion is slanted with respect to the center line of the opening, and a line intersecting a peak of the first end of the third portion and a peak of the second end of the third portion is slanted with respect to the center line of the opening.