Patent ID: 7284846

Claim:
An ink cartridge comprising: a cartridge body to be injected with predetermined ink by an ink injector, the predetermined ink being one of a plurality of kinds of inks; a display portion for displaying the kind of the predetermined ink to be injected; and a to-be-detected portion to be detected when the predetermined ink to be injected is identified in the ink injector to be mounted with the cartridge body, the to-be-detected portion being a different portion from the display portion and being provided in a position corresponding to the predetermined ink displayed by the display portion, the position being one of a plurality of different positions corresponding to the plurality of kinds of inks, wherein the display portion includes a plurality of ink identification marks corresponding to the plurality of kinds of inks respectively, and one ink identification mark of the plurality of ink identification marks is selected to be displayed, and wherein the position of the to-be-detected portion is selected from the plurality of different positions in accordance with the selection of the one ink identification mark from the plurality of ink identification marks in the display portion.