Patent ID: 6536888
Filing Date: 2003-03-25
Classification: B41J

Abstract:
An ink cartridge including an ink bag, the cartridge comprising:a cartridge housing having a front side wall, a back side wall opposite the front side wall, a pair of opposed left and right side walls separating the front and the back side walls, and a bottom wall, respective internal facing surfaces of the walls defining an internal cavity within the housing, the front and back side walls each having an internal facing surface that is curved and curvature of the internal facing surface of the front side wall being complementary to curvature of the internal facing surface of the back side wall so that there is a generally uniform spacing existing between the internal facing surfaces of the front side wall and the back side wall at a respective section through the cartridge housing; and the ink bag being located within the internal cavity and filled with liquid ink so that the ink bag makes contact with the internal facing surfaces of the front side wall, the back side wall and each of the pair of opposed left and right side walls and the bottom wall.