Patent ID: 7530680
Filing Date: 2009-05-12
Classification: B41J

Abstract:
1. An ink cartridge, comprising: a first signal blocking portion; a second signal blocking portion, wherein a first plane intersects each of the first signal blocking portion and the second signal blocking portion; a third signal blocking portion, wherein a second plane intersects each of the second signal blocking portion and the third signal blocking portion, the second plane is perpendicular to the first plane, and the second plane corresponds to a center line of the ink cartridge, wherein the first signal blocking portion and the second signal blocking portion are aligned in a particular direction which is perpendicular to the second plane, and the second signal blocking portion and the third signal blocking portion are unaligned in the particular direction, wherein each of the first signal blocking portion, the second signal blocking portion, and the third signal blocking portion are configured to either prevent a signal from passing therethrough or to alter a path of the signal, wherein the third signal blocking portion is configured to move with respect to each of the first signal blocking portion and the second signal blocking portion; an ink chamber configured to store ink; and an ink supply portion configured to supply the ink from an interior of the ink chamber to an exterior of the ink chamber, wherein the first plane intersects the ink supply portion, and the second plane is offset from the ink supply portion, wherein the third signal blocking portion is further configured to move with respect to the ink supply portion.