| 摘要 |
PURPOSE: An ink cartridge is provided to be removable in an ink supply needle and to certainly gear an ink cartridge holder with a pawl of a lever without regard to external force. CONSTITUTION: A recessed portion is formed in an ink cartridge(1) to define a three-dimensional space. Each of axes in the three-dimensional space containing one side surface of the ink cartridge in which an ink supply port(14) is formed is divided into a plurality of sections to obtain a plurality of coordinate points. Identification protruded portions which serve as identification pieces are disposed selectively at the coordinate points in accordance with identification items. Thereby, the exact time to gear a pawl of a lever with an ink cartridge holder is informed and the geared status is maintained without regard to the elastic force of the lever.
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