Patent ID: 8104881
Filing Date: 2012-01-31
Classification: B41J

Abstract:
1. An ink cartridge for supplying ink to an inkjet recording head, the ink cartridge comprising: a primary ink room and at least one secondary ink room configured to store therein the ink, the secondary ink room being arranged adjacent to the primary ink room, and the secondary ink room being filled in advance with a specific amount of same type of ink as that stored in the primary ink room; and an ink supplying needle configured to suction the ink from the primary ink room and supply the ink to the inkjet recording head; wherein the volume of ink stored in the secondary ink room, which is closer to the inkjet recording head than the primary ink room in an ink supply path from the ink cartridge to the inkjet recording head, is less than the volume of ink stored in the primary ink room which is further from the inkjet recording head than the secondary ink room in the ink supply path; wherein the ink supplying needle is made to pierce through the secondary ink room in such a manner that at least a needle hole provided in the ink supplying needle reaches the primary ink room so as to suction the ink from the primary ink room through the needle hole and supply the ink to the inkjet recording head via the ink supply path, and as the ink supplying needle is pulled out from the primary ink room, the needle hole passes through the secondary ink room so that the ink supplying needle can suction the ink from the secondary ink room.