| 摘要 |
PROBLEM TO BE SOLVED: To prevent the damage of an ink bag, to certainly discharge ink and to accurately detect an ink end by providing a protruding piece extending to the outside from the outer edge of the ink bag and capable of coming into contact with the side wall of the case main body of the ink bag at its leading end to one side at least on the long side of an ink end detection plate. SOLUTION: An ink bag 10, an ink end detection plate 20 and a case main body 30 for housing them are provided in an ink cartridge 1, and a protruding piece 22 is formed to the long side on the side opposed to the long side having a detection piece 21 formed thereto of the ink end detection plate 20 so that the leading end thereof can come into contact with the wall side of the case main body 30 from the outer edge 12 of the ink bag 10. As a result, the upper surface of the ink bag 10 is fixed to the ink end detection plate 20 at the time of transport, etc., and, since the protruding piece 22 comes into contact with the side wall of the case main body 30 in extremely short displacement, the shaking thereof is suppressed. The ink in the ink bag is smoothly discharged by the ink detection plate 20 even in a state reduced in the amt. of ink and an ink end can be accurately detected. |
